Dissertations / Theses: 'Engineering geology'

1

Stossel, Deborah Louise. "The engineering geology of Frankton Arm." Thesis, University of Canterbury. Geology, 1999. http://hdl.handle.net/10092/6815.

Full text

Abstract:

Seven bedrock landslides situated within quartzofeldspathic schist exist up slope of the residential area along the Frankton Arm of Lake Wakatipu, South Island, New Zealand. Engineering geological and geotechnical failure models for these landslides have been established using engineering geological mapping at scales of 1:5000 and 1:10000, geotechnical testing, and the development of limit-equilibriurn sensitivity models. Geotechnical testing of artificially fractured schist bedrock obtained shear strength values of Φ = 24°-36° and zero cohesion, and point load strength indexes of 0.6-3.83MPa for rock tested perpendicular to foliation, and 0.11-0.92 for rock tested parallel to foliation. Testing of shear zone material gave values of Φ 60°-110° and zero cohesion. The largest failure is the Queenstown Hill Landslide, with an estimated volume of 240M m³ which is interpreted as a retrogressive translational landslide with the toe forming a compressional bulge in the mid-slope area of Queenstown Hill. Three phases of movement have taken place, the earliest phase probably being initiated in the southeastern area of the slide mass by ice scouring and the over steepening of slopes during the final stages of the Last Glaciation. On retreat of the glacial ice, lateral support was removed and increased pore water pressures may have acted to reduce the shear strength of the slope along critical failure or shear surfaces. Movement is inferred to have been by translational planar sliding by slow rock mass creep, not from buckling in the toe, partly along foliation shear zones and a stepped failure surface in fractured schist bedrock immediately following glacial retreat. The second and third phases of movement were initiated as a result of the removal of support by the previous phase, with the second phase forming small translational- slides and. retrogressive features, and the third phase forming the toe bulging by gravitational creep down slope. Six smaller bedrock failures (up to 2.8M m³ each in volume) are situated further east along Frankton Arm. These landslides are interpreted as shallow retrogressive translational failures, with their slide bases orientated sub-parallel to the schist foliation. These failures may have initially occurred following glacial retreat (similar to the Queenstown Hill Landslide), with the slides situated at lower elevations activated by seismic events at a much later stage following deposition of lake beaches as the enlarged Lake Wakatipu was lowering. The only evidence for continual movement for within the last 100 years is on Slide No.3 and Slide No.4. Minor wedge failures have occurred from the head scarp, but the high frictional interlock between the displaced blocks creates minimal risk to the residential areas below and if further development was to occur in these areas, prudent engineering geological practices should be implemented. Future sub-surface work needs to be completed to accurately locate the depth, shape and angle of the failure surfaces for each landslide. This work would also determine the parts of the failure surfaces that occur through foliation shear zones, or fractured schist.

APA, Harvard, Vancouver, ISO, and other styles

2

Tingley, A. C. "Engineering geology of landfill gas migration." Thesis, University of Surrey, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.290487.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Giles, David. "Computer-based modelling and analysis in engineering geology." Thesis, University of Portsmouth, 2014. https://researchportal.port.ac.uk/portal/en/theses/computerbased-modelling-and-analysis-in-engineering-geology(091c5104-4dbb-4e90-b897-aaf34702100a).html.

Full text

Abstract:

This body of work presents the research and publications undertaken under a general theme of computer-based modelling and analysis in engineering geology. Papers are presented on geotechnical data management, data interchange, Geographical Information Systems, surface modelling, geostatistical methods, risk-based modelling, knowledge-based systems, remote sensing in engineering geology and on the integration of computer applications into applied geoscience teaching. The work highlights my own personal contributions and publications under this theme as well as collaborations and output emanating from PhD co-supervisions which have included the following projects: A geotechnical and geochemical characterisation of dry oil lake contaminated soil in Kuwait; Dust dispersion monitoring and modelling; Geotechnical properties of chalk putties; The application of airborne multispectral remote sensing and digital terrain modelling to the detection and delineation of landslides on clay dominated slopes of the Cotswolds Escarpment; Domestic property insurance risks associated with brickearth deposits; Development of a knowledge-based system methodology for designing solid waste disposal sites in arid and semi-arid environments; GIS Techniques as an aid to the assessment of earthquake triggered landslide hazards; The application of GIS as a data integrator of pre-ground investigation desk studies for terrain evaluation and investigation planning; The influence of clay mineralogy pore water composition and pre-consolidation pressure on the magnitude of ground surface heave due to rises in groundwater level. My publication record comprises; Pathfinder and seminal papers; Papers from co-supervised PhD programmes; Pedagogic contributions; Encyclopaedia entries; International collaborations; Technical authorship and support; Other published contributions; Confidential development and technical reports and Internal briefing papers.

APA, Harvard, Vancouver, ISO, and other styles

4

Howland, Albert Frederick. "An engineering geology data base for urban renewal." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/61506.

Full text

Abstract:

Following a degeneration of many urban areas in recent decades, Government formed various Development Corporations with new powers to stimulate urban renewal. The London Docklands Development Corporation (LDDC) was one of the first. The thesis describes a role for engineering geology as a central function in urban renewal by developing the idea of data collation into a coordinated procedure to allow a continuing increase in experience and knowledge of the area. The process of 'urbanization' is described, together with the legislative history to the Development Corporations. Methods of geotechnical data storage and presentation are reviewed and considered within the needs of the LDDC. A system based on the use of microcomputer has been developed and is described. This requires only minimal staff and resource commitment. It provides for the transfer of data on floppy diskette and may be searched through a number of enquiry modules to extract and process the data. A reappraisal of the geology and hydrogeology has been undertaken. This concludes that there is no evidence for the Greenwich Fault, the dominant structural feature being a northwards plunging syncline, the Greenwich Syncline. A depositional model developed for the Woolwich and Reading Beds indicates a number of transgressions and shows the area to be at the transition between marine and lagoonal facies separated by a series of migrating sand bars. The Thames Gravels correlate with work in the Middle and Lower Thames Valley and a further erosion level has been identified represented by the Silvertown Gravel. Groundwater levels are shown to be rising and are modelled to show their sensitivity to the urban setting. An assessment of the engineering parameters of the Formations has been made. This shows a variation in the Woolwich and Reading Beds that correlates with the proposed depositional setting, that the London Clay conforms to the expected regional variations and that the Thanet Sand is a locked sand. The nature and problems of made ground are described. A number of examples illustrate the engineering geological problems experienced during the process of urban renewal in the Docklands. The approach described is considered to be applicable to other areas.

APA, Harvard, Vancouver, ISO, and other styles

5

Koor, Nicholas Paul. "A contribution to slope engineering in Hong Kong : the engineering geology approach." Thesis, University of Portsmouth, 2016. https://researchportal.port.ac.uk/portal/en/theses/a-contribution-to-slope-engineering-in-hong-kong(5d88e719-14fc-4052-8f89-5c4bef50e40c).html.

Full text

Abstract:

Whilst working in Hong Kong from 1993 to 2005, firstly for the Geotechnical Engineering Office of the Hong Kong Government and then for various international consultants, I was involved in a number of important research studies, landslide investigations and construction projects where I was able to make a significant contribution to science, knowledge and practice under the theme of slope engineering. This work was carried out in what I have described as the engineering geology approach which has six interrelated objectives: identification of vulnerable slopes; constraint of slope defect; definition of slope geological and hydrogeological model; geotechnical characterisation; slope design; and design verification – constructability. Six projects are described in this narrative (Volume 1 of the submission) supported by published reports, papers, and research articles which are reproduced in Volumes 2 to 5. The establishment of the Hong Kong Slope Safety System (HKSSS) in Hong Kong in 1977 has developed over the subsequent 28 years into what is considered one of the most sophisticated slope safety systems in the world. The Chai Wan Area Study (Volume 2), the Site Characterisation Study (Volume 3), and the Lai Ping Road investigation (Volume 4) have made positive contributions to the HKSSS through: the development of new slope investigation techniques; the advancement in understanding of the formation of “clay rich seams” and their role in slope instability; and the application of detailed geomorphological mapping of failure scarps in the understanding of slow moving retrogressive landslides. Further work carried out in my role as Resident Geotechnical Engineer for the Foothill Bypass project and Senior Resident Engineer for the Deep Bay Link project contributed to the HKSSS through: developing an understanding of the residual strength of weathered rock in Hong Kong; natural terrain hazard mitigation, in particular a cost benefit approach in scenarios where there is only an economic risk; and in the design and construction of long soil nails in aggressive ground conditions and the use of double corrosion protection systems for long soil nails.

APA, Harvard, Vancouver, ISO, and other styles

6

Hango, Jennifer Susan 1974. "Further development of subsurface profiling and engineering geology software." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/51559.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Grebner, Matthew. "A flexible integrated computer system for engineering geology education." Thesis, Massachusetts Institute of Technology, 1989. https://hdl.handle.net/1721.1/130497.

Full text

Abstract:

Thesis: M.S., Massachusetts Institute of Technology, Department of Civil Engineering, 1989
Includes bibliographical references (leaf 56).
by Matthew Grebner.
M.S.
M.S. Massachusetts Institute of Technology, Department of Civil Engineering

APA, Harvard, Vancouver, ISO, and other styles

8

Grubb, Kenneth Benjamin. "Engineering geology of the central business district of Brisbane." Thesis, Queensland University of Technology, 1989. https://eprints.qut.edu.au/35961/1/35961_Grubb_1989.pdf.

Full text

Abstract:

The Central Business District (CBD) of Brisbane is bounded on two sides by the Brisbane River. The Botanic Gardens form the eastern boundary between the CBD and the Brisbane River and low hills extend beyond the western boundary. The engineering geology here is complicated by the occurrence of structurally complex metamorphic rocks which are overlain by residual, colluvial and Quaternary alluvial soil deposits. Space limitations imposed by the Brisbane River and the Botanic Gardens, and the dramatically increased demand for real estate since the late 1970's, has resulted in the construction of many multi~storey structures. This building boom has created a demand for geotechnical information which is not available from regular sources, including the Brisbane City Council and the Geological Survey of Queensland. The main database essentially one of problem confronted in this inadequate land survey data. work has been A pre-European settlement contour map showing topographic features and some early structures such as dams had to be constructed by the author as a pre 1900 contour map has apparently never been compiled for the centre of Brisbane. This map has been used as the base map for the compilation of the seven overlay maps. The basement rocks of the CBD are of the Palaeozoic Neranleigh Fernvale beds only. The study area falls within the South D'Aguilar Block. Rock types include phyll ite, metagreywacke, quartzite and a lenticular body of carbonate rock (chloritic marble or intensely sheared, carbonate replaced, metabasalt). Neranleigh Fernvale metabasalt occurs to the immediate north west of the study area. Triassic Brisbane tuff occurs to the immediate south of the study area. Rock structures comprise a penetrative foliation and three major resolved joint planes. Normal faults and localised folding have been recorded. Soil deposits of residual, colluvial and alluvial origin exist in the study area. The residual and colluvial deposits have derived from the Neranleigh Fernvale beds and have developed since post palaeozoic times. The alluvial deposits locally overly the residual and colluvial deposits and are of Holocene and probable Pleistocene age. The Holocene deposits are typified by poorly consolidated organic clays, sand and gravel which are located in and along three major and nineteen minor internal drainage lines and the Brisbane River. The deposits of probable Pleistocene age are typified mainly by consolidated and in places cemented clayey sand, also inorganic clays. Montmorillonite and kaolinite are the main clay minerals. Filling, up to 8.0 metres thick, covers approximately 25 percent of the study area vvhereas cutting, excluding building basements, has been carried out over approximately 5 percent of the surface area. Engineering Characteristics of the rock and soil deposits have been described in Chapter 3. Indicative test values have been assigned and these can be related to the Engineering Practice described in Chapter 4. Maps, 5, 6, 7 and 8 show the basement geology, areas of primary cut and fi 11, surface geology with contours to the base of alluvial soils and structural contours to the top of highly weathered or better bedrock respectively. These maps, particularly Map 8, are important predictive tools for multistorey development investigations. Map 9 shows the study area divided into 9 Engineering Geology Zones. Maps 5 to 9 are discussed in the text. In conclusion, this study presents the first composite and systematic approach to the prediction of the geology, summarizes the engineering characteristics of the soils and rocks and discusses the engineering methods practised in the Central Business District. Nine maps each to a reduced sea 1 e of 1: 4000 have been compiled and the Central Business District is divided into nine engineering geology zones.

APA, Harvard, Vancouver, ISO, and other styles

9

Esfarjani, H. R. "Engineering properties of basic igneous rocks." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374739.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Kennie, T. J. M. "Developments in surveying technology and their application to engineering geology." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46861.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Chui, Wai-hong. "Geology and engineering properties of offshore quaternary sediments in the Yam O reclamation area, Lantau Island." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B42577561.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Tsidzi, K. E. N. "The engineering geological characteristics of foliated rocks." Thesis, University of Newcastle upon Tyne, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356161.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

D'Agnese, Susanne L. "The engineering geology of the Fountain Landslide, Hood River County, Oregon." PDXScholar, 1986. https://pdxscholar.library.pdx.edu/open_access_etds/3257.

Full text

Abstract:

The Fountain Landslide located along I-84, five kilometers east of Cascade Locks, Oregon has moved periodically for over thirty years. Aerial photographs taken prior to recorded movement of the landslide show the headscarp of a large preexisting landslide. In 1952 a cut was made into the toe of the landslide to straighten Highway 30. The recorded movement history begins at this time. Stabilization procedures in the late 1950's focused on dewatering the slide mass. Movement had nearly stopped by 1957. A deeper cut was made into the toe of the landslide in 1966 to widen the highway to the four-laned I-8ON (later renamed I-84). Accelerated movement resulted. The Oregon State Highway Division removed 264,000 cubic meters of material from the head of the movement zone. Accelerated movement continued. The Oregon State Highway Division then began intense research of the landslide. Research included core logs, slope inclinometers, and the ground water data. The western portion of the slide mass was unloaded more extensively in 1970 (1.2 million cubic meters). This later unloading slowed down the movement, but it continues periodically. The oldest unit found in the area is a volcaniclastic unit. It is found only in core logs in the SW portion of the slide. The basalts of the Columbia River Basalt Group are found intact and as talus in the study area. Quartz diorite intrusives younger than the Columbia River Basalt Group is found at the surf ace and at depth along the entire length of the toe of the landslide. Wind River Lava crossed from Washington, dammed the Columbia River and was deposited within the study area. The slide mass consists primarily of Columbia River Basalt Group talus and Wind River Lava talus. The slip plane consists primarily of rocky mudstone. The ground water table is elevated over the intrusive at the toe of the landslide and over the volcaniclastic unit at the head. Surface cracks and scarps indicate that the slide mass moves northward, drops at the head and heaves at the toe. A slope stability analysis of the Fountain Landslide showed that the instability here is the result of elevated groundwater and the removal of material at the toe for highway construction. It also showed that the eastern portion is more stable than the western portion. The differences in the stability result of the addition of fill at the toe and a lower ground water table in the eastern portion. The development of the prehistoric slide resulted when the dam of Wind River Lava was removed and lateral support for the deposit was lost. This study shows that it is essential to have adequate geologic information prior to construction or remedial design for any preexisting landslide to avoid stability problems.

APA, Harvard, Vancouver, ISO, and other styles

14

Barnett, Wayne Peter, and Wayne Peter Barnett. "The structural and engineering geology of the Country Rock at Finsch Mine." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/23638.

Full text

Abstract:

This project was undertaken at Finsch Mine, De Beers Consolidated Mines Ltd., in order to collect the relevant information to build a database for the country rock. The country rock is comprised of the ~2.5 Ga sediments of the Griqualand West Basin: the banded ironstones and carbonates of the Ghaap Group. A stratigraphic column has been produced that correlates the country rock at Finsch Mine with the corresponding strata in the accepted stratigraphy of the Griqualand West Sequence. Periods of regression and transgression in the Early Proterozoic basin may have controlled the Ca/Mg ratio and the percentage of limestone deposition. Later hydrothermal dolomitization had a significant affect on the amount of secondary dolomite present in the country rock. The rock structures (faults, dykes ad fractures) in the country rock were mapped in detail. The data was placed into MicroStation (a CAD package), which now acts as a limited three dimensional GIS database for the mapped structures. The structural data was analyzed and a complete three dimensional structural model was produced. The faulting belongs to a strike-slip system formed by crustal shear late during the Namaqua-Natal orogeny (ca. l.l Ga). A complex structural/tectonic history is suggested whereby transtension is followed by a rotation of the tectonic stress vectors with resultant transpression. During transpression the fault-parallel jointing/cleavage is fanned by fault-parallel folds and a conjugate set of joints form as a result of WSW directed crustal shortening. Extensive line sampling of the rock discontinuities (joints) was undertaken. The characteristics of the joints were qualitatively described/mapped across the mine. The data from the line sampling was analyzed and used to quantify the qualitative descriptions. The mapped joint's characteristics are graphically presented on plans, described by the author as 'joint-nets'. Up to six joint sets have been observed and genetically linked to the structural history. Distinct homogeneous structural domains do not exist at Finsch mine, but the joints were used to crudely define some domains. The rock types in the carbonate succession were studied in detail and distinct different types were sampled and tested to obtain UCS, point-load strengths and Young's moduli. This project describes the process of Rock Mass Classification so that the reasons for the data collection and analyses are apparent to the reader. The data collected during this project suggests that the kimberlite pipe had a significant affect on the smrnunding country rock, maybe as far 20 to 30 metres from the pipe contact. It is suggested that the intrusion of the precursor kimberlite bodies and the main pipe caused some deformation of the country rock mass. Such a suggestion is contrary to the classical understanding of kirnberlite emplacement.

APA, Harvard, Vancouver, ISO, and other styles

15

Lam, Kwok-yiu Samson, and 林國耀. "Engineering geology of slope deposits in the vicinity of Tai O." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B30426376.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Fernandes, da Silva P. C. "The use of structural geology in regionalisation schemes for engineering purposes." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289598.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Lam, Kwok-yiu Samson. "Engineering geology of slope deposits in the vicinity of Tai O /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22277705.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Hawkes, Martin. "Surficial geology of the Boston basin, Ma." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14816.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Narbett, Robert Wyn. "Geological and engineering properties of estuarine alluvium from the Severn Estuary." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243694.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Finstick, Sure Ann. "Subsurface geology and hydrogeology of downtown Honolulu with engineering and environmental implications." Thesis, Water Resources Research Center, University of Hawaii at Manoa, 1996. http://hdl.handle.net/10125/21926.

Full text

Abstract:

The construction of high-rise buildings and other engineering structures in the downtown Honolulu area requires detailed site investigations prior to design and construction. This includes soil borings, environmental assessments, and groundwater measurements. As a result, much data on the subsurface geology of downtown Honolulu exists, but it is spread among individual consulting firms and various government agencies. The purpose of this study is to compile the existing data and interpret the subsurface geology, engineering geology, hydrogeology, and environmental problems within the study area. This study commenced with collecting and interpreting 2,276 soil boring logs from consulting firms in Honolulu, along with the Groundwater Index database and evironmental databases from the State of Hawaii. The subsurface materials are classified into nine categories: fill, lagoonal (low-energy) deposits, alluvial deposits, coralline debris, coral ledges, cinders, tuff, basalt, and residual soil or weathered volcanics. The study area is divided into 157 quadrangles (1000' X 1000'). The subsurface conditions within each quad are described in detail, and nine cross-sections are presented for further clarification of the subsurface geology. Foundation bearing layers and buried alluvial channels are mapped. Environmental problems and groundwater data are summarized in the form of tables and maps. The coral ledges, tuff, and basalt are the most suitable foundation bearing layers within the caprock, The coral ledges, coralline debris, coarse-grained lagoonal sediments, and cinder sands are characterized by higher hydraulic conductivites than the other materials that comprise the caprock. However, the caprock as a whole is characterized by much lower hydraulic conductivites than the underlying Koolau basalt that is the main aquifer for the island. The caprock groundwater is brackish, non-potable, and highly vulnerable to cantamination. Petroleum hydrocarbons and heavy metals from leaking underground storage tanks are the primary soil and groundwater contaminants. Caprock groundwater is generally found within ±5 feet of sea level. Dewatering is often necessary at sites involving the construction of basements.
Thesis (Ph. D.)--University of Hawaii at Manoa, 1996.
Includes bibliographical references (leaves 304-311).
UHM: Has both book and microform.
ARCS Foundation; Department of Geology and Geophysics; Water Resources Research Center

APA, Harvard, Vancouver, ISO, and other styles

21

Eggers, Mark J. "Engineering geology assessment of slope instability on forest lands in South Westland." Thesis, University of Canterbury. Engineering Geology, 1987. http://hdl.handle.net/10092/9580.

Full text

Abstract:

Assessment of slope instability on forest lands in South Westland was limited to the resource allocation level of evaluating slope movements on forest lands with the prime objective of providing an overview of slope movement potential adequate for forestry development planning. Three sites were selected for detailed investigation on the three most unstable landform units which were identified by previous studies, viz:- 1. Greenland Group Hill Country: Boulder Creek; 2. Alpine Fault Zone slopes: Havelock Creek, and; 3. Cretaceous-Tertiary Hill Country: Grave Creek. Investigations were divided into three stages, engineering geology field and laboratory studies, assessment of slope movement processes and instability controls, and implications of slope instability for forest management. The dominant type of slope failure at Boulder Creek is debris slump/slide-avalanche in crushed hornfelsed sandstone and puggy tectonic breccia bedrock materials with failures typically initiated during high intensity rainstorm events and seismic events. The Boulder creek catchment is presently undergoing a period of increased slope activity which is generating a substantial quantity of sediment and is overloading the stream channel with rock debris. Boulder Creek provides an exceptional example of slope instability problems in Greenland Group Hill Country, this being explained by the oversteepened sides of the glaciated Moeraki River valley in fault-crushed bedrock. Alpine Fault Zone slopes fail most commonly by debris slide-avalanche in crushed mylonite schist and crushed garnet schist bedrock triggered by high intensity rainstorm events. Investigations at Havelock Creek also identified large-scale rock (block) slide failures in the same crushed bedrock materials which are initiated by infrequent seismic events. The Grave Earthflow, located in Cretaceous-Tertiary Hill Country, was triggered by construction of State Highway 6 in 1963-65. Failure is taking place by a complex rotational slide-earthflow type of movement along a zone of basal shear in grey mud material derived from faulting in lower Otumotu Formation bedrock. Surface movement monitoring investigations measured a high rate of movement of up to 419cm/year. Unloading of toe support in December 1984 caused an instantaneous acceleration in movement rates which subsequently declined during the monitoring period of March 1985 to June 1986. This deceleration process obscured any climatic influences on movement. Slope failure potential in South Westland slopes is governed by the fundamental causes of slope instability: the distribution of weak fault zone materials and crushed bedrock, and the steep topography (20-65°). Aerial photograph evidence suggests that slope instability features develop very rapidly (within one rainstorm event) and active instability periods occur in short-lived episodes (less than 50 years) which are coincident with the occurrence of heavy precipitation periods. Recommendations for future management of South Westland forest lands are:- 1. Alpine Fault Zone slopes should be limited to protection forestry management practices. 2. Greenland Group Hill Country and Cretaceous-Tertiary Hill Country should be assessed by more detailed phases of evaluation for small-scale bush-mill harvesting methods only. 3. Engineering geology methods of investigation and data presentation have been demonstrated to make a valuable contribution to forest resource allocation studies and it is recommended that these methods be applied to all levels of evaluation of slope movement potential on forest lands.

APA, Harvard, Vancouver, ISO, and other styles

22

Chui, Wai-hong, and 徐偉康. "Geology and engineering properties of offshore quaternary sediments inthe Yam O reclamation area, Lantau Island." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B42577561.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Ho, Chiu-shek. "Stereographic projection and mapping of engineering geology case study near Jordan Valley, Hong Kong /." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38848673.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Golightly, Christopher Robert. "Engineering properties of carbonate sands : the geological origins, classification, engineering, shear and triaxial stress path properties of four carbonate sands. The analysis of the transfer function for pile skin friction." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285066.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Gamon, T. I. "The influence of weathering on the engineering properties of the Hong Kong Granite." Thesis, University of Newcastle Upon Tyne, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370155.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Lucas, Tom. "Engineering Geology Assessment of the Brunner Coal Measures Island Block Opencast Coalmine Reefton." Thesis, University of Canterbury. Geological Sciences, 2002. http://hdl.handle.net/10092/3911.

Full text

Abstract:

The primary objective of this study was to perform a detailed engineering geological investigation of the proposed Island Block Opencast Coalmine highwall at Reefton. An investigation was undertaken to provide information on the rock material and rock mass properties of the Brunner Coal Measures that comprise the highwall, with the specific aims of identifying the distribution of rock types and the locations and orientations of mappable defects such as faults, joints, shears, and crush zones. The Brunner Coal Measures that comprise the overburden are an alternating sedimentary sequence of massive sandstones, laminated sandstones, siltstones, mudstones, and coal. These were divided into 5 geotechnical units on the basis of physical, and mechanical intact rock material parameters determined for each. The coarse-medium-grained lithologies typically have high porosities (n=8.1-10.6%), and friction angles (41.5 and 47.1°), and low dry densities (2290-2390kg/m\ slake-durability index results (LI2=65.0- 87.4% retained), UCS intact rock strength (21.2-34.3MPa), and cohesion (5.7 and 8.8MPa). The laminated fine-grained lithologies have low porosities (n=2.0-4.8%), and friction angles (34.8-43°), and high dry densities (2480-2570kg/m3 ), slake-durability index results (LI2=98.5-98.8% retained), UCS intact rock strength (36.7-60.8MPa), and cohesion ( 14.3-15.8MPa). Scanline survey traverses were conducted along the existing highwall benches to characterise the rock mass at Island Block, and the rock mass properties determined were; defect type, chainage, dip and dip direction, persistence, aperture, nature of infilling, defect roughness, amplitude and waviness, and ground water flow. Joints are typically steeply dipping, with mean joint set orientations on the eastern highwall for 11 of 70-901236°, J2 47-59/240°, and 13 where present 65-811261°. Normal faults present in the eastern highwall have orientations similar to the joint set orientations. The joint sets in the southern highwall display more variance in their orientation: 11 - 80-901210-232°, 85-90/360° or 85- 901180°, 821278°, and J2 - 80-901122°, 80-901295°, 821235° and 891099°. Faults in the southern highwalls typically display a strong E-SE dip direction, with orientations ranging between 054-137° and dips 30°_70°. Structural domains were developed for the high walls around Island Block based on the joint orientations, and the presence of faults. These were further classified on the potential mode of failure after kinematic stability analysis was performed on the joints sets, faults, and the combination of these two defects. Potential toppling failure on joints was found to be the dominant failure mode, although this mode of failure was observed in the field to lack the upper and lateral release surfaces, necessary for failure. The structural history of the Brunner Coal Measures at Island Block has been characterised by intense periods of compression-and extension-related deformation, due to structural deformation at a region level. Thrust faults and imbricate thrust duplexes have developed in response to compression from the north. Joints are both systematic and non-systematic as result of the differing styles of deformation. Normal faults recorded on the eastern highwall formed either coeval with the thrusting or after valley incision. Wedge shaped seam splits are present in the western section of the southern highwall, and are observed to pierce the 'A' and B' coal seams. The development of these splits related to syndepositional faulting. The mining implications of these structures relate to the overall stability of the highwalls, as they provide planes of weakness within the rock mass along which failure can occur.

APA, Harvard, Vancouver, ISO, and other styles

27

Mukhtar, Jonathan-Adam. "Engineering Geological and Geotechnical Characterisation of Selected Port Hills Lavas." Thesis, University of Canterbury. Geological Sciences, 2014. http://hdl.handle.net/10092/9971.

Full text

Abstract:

This thesis aims to create a specific and robust geotechnical data set for the Lyttelton Volcanic Group, and investigate the effect of emplacement and post-emplacement mechanisms on geotechnical characteristics. The thesis provides an engineering geological model of a representative section of the Lyttelton Volcanic Complex, which, in conjunction with field observations, informed the subdivision of the main lithological groups into geotechnical sub-units. The sub-units account for the geological variations within the rock types of this study. Eighteen geotechnical sub-units were identified, sampled and characterised: 1trachytic dykes, 2trachytic domes, 3trachytic lava, 4brecciated basaltic ignimbrite, 5moderately welded basaltic ignimbrite, 6highly welded basaltic ignimbrite, 7red ash, 8crystal dominated tuff, 9lithic dominated tuff, 10rubbly basaltic breccia, 11unweathered basaltic lava, 12slightly to moderately weathered basaltic lava, 13highly to completely weathered basaltic lava, 14highly vesicular basaltic lava bomb, 15basaltic dyke, 16blocky basaltic lava, 17volcanogenic conglomerate and 18volcanogenic tuffaceous sandstone. Thirteen units were able geotechnically tested. Sample preparation and geotechnical testing followed ASTM and ISRM guidelines respectively. Geotechnical testing included: uniaxial compressive strength (σci), point load strength index (Is(50)), porosity (n), density (ρd), P and S wave velocities (Vp and Vs), slake durability (Id2), Young’s Modulus (E), Poisson’s Ratio (υ), shear modulus (G) and bulk modulus (K). The igneous lithologies included in this study have been characterised using the Detailed Engineering Geological Igneous Descriptive Scheme, developed purposely for the needs of the thesis. The results of laboratory testing showed many strong trends with geological characteristics and relationships between geotechnical parameters. Parameters such as porosity, density, P-wave velocities, Young’s Modulus and point load strength showed very strong correlations with uniaxial compressive strength. Variability in the physical and mechanical properties is attributed to the geological factors, which dictate the material behaviour. These include texture, grain size, composition, welding, lithification, flow banding, percentage and size of phenocrysts/clasts/lithics. Geological factors affecting geotechnical behaviour are a function of emplacement mechanism. Four distinct emplacement mechanisms were identified in this study: lava flows, pyroclastic density currents, intrusions (dykes) and airfall deposits. Typically, lava flows and intrusions have higher strength, durability, density and lower porosity than pyroclastics and airfall deposits. Importantly, the data illustrates a considerable variability in some geotechnical parameters within the same unit (e.g. 58-193 MPa strength variation in the unweathered basaltic lava). Variability within rocks with similar emplacement mechanisms is attributed to the effects of post-emplacement mechanisms and processes (e.g. weathering, alteration and micro/macro fracturing leading to lower strength). Evaluation of engineering geological and geotechnical parameters of rock and soil materials are required for engineering purposes, specifically when any form of design is required. This study has highlighted the importance and necessity to identify volcanic lithologies and features correctly as there are consequences for geotechnical behaviour, and that volcanic data from literature data should not be used without the correct degree of ground-truthing and geological context. Location-specific engineering geological data are necessary for the quantitation of variability in engineering geological characterisation for engineering geological models, designs and simulations in the Port Hills Volcanics.

APA, Harvard, Vancouver, ISO, and other styles

28

Maranesi, Davi Alfredo [UNESP]. "Avaliação geoambiental em áreas de cerrado no triângulo mineiro para implantação de pequenos reservatórios superficiais de água: aplicação na folha de Tupaciguara, MG (1:100.000)." Universidade Estadual Paulista (UNESP), 2003. http://hdl.handle.net/11449/102920.

Full text

Abstract:

Made available in DSpace on 2014-06-11T19:32:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-02-14Bitstream added on 2014-06-13T19:21:52Z : No. of bitstreams: 1 maranesi_da_dr_rcla.pdf: 1020550 bytes, checksum: feb48c33c653eac3647154e9696768ed (MD5)
A região ocupada pelo bioma Cerrado, no Triângulo Mineiro, a partir das últimas três décadas, vem experimentando um acelerado processo de expansão agrícola/pecuária. A crescente necessidade hídrica para este desenvolvimento implicou a construção de inúmeros pequenos reservatórios superficiais de água dentro dos canais de drenagem em bacias de até 3ª ordem. Este tipo de ocupação antrópica, normalmente feita sem um conhecimento adequado tanto do meio físico como das técnicas construtivas, vem contribuindo para o surgimento de diversos problemas ambientais. Este trabalho apresenta o estudo sobre esta ocupação dentro deste bioma, realizado em uma superfície de 2918,89 km2, pertencente à folha de Tupaciguara-MG, em escala regional de 1:100.000. Inicialmente, foi produzido um levantamento de campo sobre os aspectos construtivos empregados para a confecção destes pequenos reservatórios. Em paralelo, foi desenvolvido um estudo sobre o conjunto de atributos do meio físico, adotando-se os procedimentos de mapeamento geotécnico e tendo como base a proposta metodológica de ZUQUETTE (1987 e 1993), representado em 6 documentos cartográficos básicos. A seguir, procedeu-se à análise e sistematização dos documentos cartográficos produzidos na fase anterior, resultando em dois novos documentos cartográficos (carta de declividade generalizada e carta de predisposição à erosão). A caracterização geotécnica dos materiais inconsolidados, realizada a partir de ensaios de laboratório, possibilitou a determinação da textura, massa específica dos sólidos, limites de consistência, compactação e permeabilidade. Finalmente, a análise conjunta de todos os documentos produzidos nas fases anteriores gerou a carta de avaliação geoambiental, que indica as potencialidades e as limitações para este tipo de ocupação no ambiente...
The region occupied by the environment of the Brazilian Cerrado, a typical vegetation from the west of Minas Gerais State which is called Triângulo Mineiro, since the last three decades, has been experiencing a quick process of agricultural and cattle raising expansion. The increasing hydric necessity for this developing led to the construction of many small superficial water dams inside the draining channels for bays until the 3rd order. This type of human occupation, usually done without an appropriate knowledge from either the physical medium or the constructive techniques, has been contributing for the appearance of several environmental problems. This work presents the studies about the occupation inside this environment, which is done over an area of 2918,89 km2, belonging to the chart of Tupaciguara-MG, using a regional scale of 1:100000. Initially, it was done a field research about constructive issues applied for the construction of these small dams. As a parallel work, it was developed a study about the set of features of the physical medium, using the procedures of geotechnical charting and based upon the methodological proposal of ZUQUETTE (1987 and 1993), presenting 6 basic cartographic documents. Afterwards, it was done the analysis and systematization of the cartographic documents developed on the former phase and the result was two new cartographic documents (general sloping chart and erosion tendency chart). The geotechnical description of the unconsolidated materials, which was done using laboratory tests, made possible the determination of the texture, specific solid masses, consistence limits, compactation and permeability. Finally, the analysis of all the documents together produced on the former phases generated the geoenvironmental evaluation chart that indicates the possibilities and limitations for this specific environmental occupation...(Complete abstract click electronic access below)

APA, Harvard, Vancouver, ISO, and other styles

29

Nik, Mortaza Gharouni. "Laboratory investigations on the engineering behaviour of rock joints using triaxial and direct shear techniques." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308370.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Lamont-Black, John. "The engineering classification of chalk with special reference to the origins of fracturing and dissolution." Thesis, University of Brighton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283547.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Lawrence, M. S. "The engineering geology of selected slopes on the Jurassic strata of the South Cotswolds." Thesis, University of Bristol, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355343.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Ho, Chiu-shek, and 何照碩. "Stereographic projection and mapping of engineering geology: case study near Jordan Valley, Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38848673.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Bloor, Daniel James. "Engineering geology and the assessment of channelised debris-flows: a Hong Kong case study." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46732573.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Nogueira, Fernando Rocha [UNESP]. "Gerenciamento de riscos ambientais associados a escorregamentos: contribuição às políticas públicas municipais para áreas de ocupação subnormal." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/102945.

Full text

Abstract:

Made available in DSpace on 2014-06-11T19:32:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-11-08Bitstream added on 2014-06-13T19:47:12Z : No. of bitstreams: 1 nogueira_fr_dr_rcla.pdf: 6690879 bytes, checksum: d442517932963e0eff714639dec3f0ee (MD5)
O objetivo desta pesquisa foi a construção de um modelo conceitual e operacional para o gerenciamento municipal de riscos ambientais associados a escorregamentos em áreas de ocupação subnormal. Para tanto, foram adotadas duas vertentes metodológicas: (1) a revisão crítica de ampla bibliografia temática compilada, tendo como parâmetro a aplicabilidade à gestão municipal brasileira; e (2) à luz da teoria, a avaliação dos acertos e das dificuldades da prática pública de gerenciamento de riscos associados a escorregamentos nos municípios visitados ou acompanhados pelo pesquisador. Apresentam-se, ao longo do texto, conceitos e instrumentos operacionais úteis para técnicos e gestores públicos. No capítulo 6, os resultados da pesquisa estão sintetizados na forma de diretrizes e de um modelo para o gerenciamento de riscos ambientais associados a escorregamentos em áreas ocupadas por favelas e loteamentos irregulares, aplicáveis às diferentes realidades ambientais e urbanas do país.
The goal of this research was the construction of a conceptual and operative model for the local management of environmental risks associated with landslides in areas of subnormal urbanization. To achieve this goal, two methodological perspectives were adopted: (1) a critical revision of the broad thematic bibliography assembled, having its application to the Brazilian municipal management as a framework; (2) the use of theoretical approaches to evaluate accomplishments and difficulties experienced by public managers of landslide risks in some Brazilian cities. Throughout the paper, concepts and operative tools for technicians and public sector managers are presented. The chapter 6th. presents the synthesis of the products organized as directives and a model for management for environmental risks associated to landslides in sites occupied by slums and illegal settlements. These models are meant to be applicable to diverse environmental and urban realities of the country.

APA, Harvard, Vancouver, ISO, and other styles

35

Lattin, Matthew M. "California glacial till and the glaciated valley landsystem| Engineering classification and properties." Thesis, San Jose State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1552263.

Full text

Abstract:

The engineering characteristics of glacial tills in the Sierra Nevada are difficult to determine due to the depositional nature of the material; however, testing methods unique to these dense materials can be utilized to obtain good engineering data. A literature review was conducted to determine testing methods and recommendations for engineering in glacial till. Further literature review revealed a significant amount of glacial deposits mapped by the USGS and CGS in the Sierra Nevada geomorphic province in California. Sierra Nevada glacial till field and lab data were obtained from Taber Consultants along with samples for further testing. Consequently, four significant conclusions were determined from testing and research. First, it was determined that Sierra Nevada glacial deposits may have large amounts of clay due to neoformation of the local volcanic rockform. As a result, plasticity and compressibility results ranged from low to high. Second, SPT N values for matrix material were correlated with depth. Third, unconfined compressive strength results for coarse-grained samples with no cohesive binding were independent of depth. Fourth, the matrix material dominated the engineering behavior of a given glacial till layer.

APA, Harvard, Vancouver, ISO, and other styles

36

Kwong, J. K. P. "Effects of geological and environmental factors on the engineering properties of weathered igneous rocks in Hong Kong." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354221.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Maranesi, Davi Alfredo. "Avaliação geoambiental em áreas de cerrado no triângulo mineiro para implantação de pequenos reservatórios superficiais de água : aplicação na folha de Tupaciguara, MG (1:100.000) /." Rio Claro : [s.n.], 2002. http://hdl.handle.net/11449/102920.

Full text

Abstract:

Orientador: José Humberto Barcelos
Banca: Cláudio Antonio de Mauro.
Banca: Silvio Carlos Bray.
Banca: Antonio Giacomini Ribeiro.
Banca: Luiz Nishiyama.
Resumo: A região ocupada pelo bioma Cerrado, no Triângulo Mineiro, a partir das últimas três décadas, vem experimentando um acelerado processo de expansão agrícola/pecuária. A crescente necessidade hídrica para este desenvolvimento implicou a construção de inúmeros pequenos reservatórios superficiais de água dentro dos canais de drenagem em bacias de até 3ª ordem. Este tipo de ocupação antrópica, normalmente feita sem um conhecimento adequado tanto do meio físico como das técnicas construtivas, vem contribuindo para o surgimento de diversos problemas ambientais. Este trabalho apresenta o estudo sobre esta ocupação dentro deste bioma, realizado em uma superfície de 2918,89 km2, pertencente à folha de Tupaciguara-MG, em escala regional de 1:100.000. Inicialmente, foi produzido um levantamento de campo sobre os aspectos construtivos empregados para a confecção destes pequenos reservatórios. Em paralelo, foi desenvolvido um estudo sobre o conjunto de atributos do meio físico, adotando-se os procedimentos de mapeamento geotécnico e tendo como base a proposta metodológica de ZUQUETTE (1987 e 1993), representado em 6 documentos cartográficos básicos. A seguir, procedeu-se à análise e sistematização dos documentos cartográficos produzidos na fase anterior, resultando em dois novos documentos cartográficos (carta de declividade generalizada e carta de predisposição à erosão). A caracterização geotécnica dos materiais inconsolidados, realizada a partir de ensaios de laboratório, possibilitou a determinação da textura, massa específica dos sólidos, limites de consistência, compactação e permeabilidade. Finalmente, a análise conjunta de todos os documentos produzidos nas fases anteriores gerou a carta de avaliação geoambiental, que indica as potencialidades e as limitações para este tipo de ocupação no ambiente...(Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The region occupied by the environment of the "Brazilian Cerrado", a typical vegetation from the west of Minas Gerais State which is called "Triângulo Mineiro", since the last three decades, has been experiencing a quick process of agricultural and cattle raising expansion. The increasing hydric necessity for this developing led to the construction of many small superficial water dams inside the draining channels for bays until the 3rd order. This type of human occupation, usually done without an appropriate knowledge from either the physical medium or the constructive techniques, has been contributing for the appearance of several environmental problems. This work presents the studies about the occupation inside this environment, which is done over an area of 2918,89 km2, belonging to the chart of "Tupaciguara-MG", using a regional scale of 1:100000. Initially, it was done a field research about constructive issues applied for the construction of these small dams. As a parallel work, it was developed a study about the set of features of the physical medium, using the procedures of geotechnical charting and based upon the methodological proposal of ZUQUETTE (1987 and 1993), presenting 6 basic cartographic documents. Afterwards, it was done the analysis and systematization of the cartographic documents developed on the former phase and the result was two new cartographic documents (general sloping chart and erosion tendency chart). The geotechnical description of the unconsolidated materials, which was done using laboratory tests, made possible the determination of the texture, specific solid masses, consistence limits, compactation and permeability. Finally, the analysis of all the documents together produced on the former phases generated the geoenvironmental evaluation chart that indicates the possibilities and limitations for this specific environmental occupation...(Complete abstract click electronic access below)
Doutor

APA, Harvard, Vancouver, ISO, and other styles

38

Doucet, Chantale. "The effect of geology on fragmentation in small development headings." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23744.

Full text

Abstract:

This thesis presents the results of a research project on the effect of geology on the fragmentation of rock excavated by blasting in underground developments. The research was undertaken at CANMET's Experimental Mine in Val-d'Or, Quebec.
A total of thirteen (13) blasts were studied from November 1994 to February 1995. The analysis of each blast was divided into three stages: (1) Pre-blast: includes structural mapping, rockmass characterization, estimation of the in situ block size distribution and documentation of the blast design. (2) Blast: includes blast vibration monitoring and analysis. (3) Post-blast: includes determination of fragment size distribution, half-cast factors and bootlegs.
The blast design was kept as constant as possible throughout the study in order to limit the variation of parameters to the geology-related ones. The results were analyzed to determine any correlation between the rockmass characteristics and the blast results. Only general trends were found: (1) The characteristic size of the fragments obtained after blasting (x$ rm sb{c}$ blast) increases when the characteristic size of the in situ distribution (x$ rm sb{c}$ in situ) increases; (2) The characteristic size of the fragments obtained after blasting (x$ rm sb{c}$ blast) decreases when the adjusted powder factor increases; (3) The half-cast factor (HCF) decreases when the Rock Quality Designation (RQD), RMR and Q values increase; (4) The characteristic size of the fragments obtained after blasting (x$ rm sb{c}$ blast) increases when the RQD, Rock Mass Rating (RMR) and quality index (Q) values increase.
Some of these results confirm basic blasting principles whereas others were unexpected. The fact that no statistical correlation could be found is probably due to the geological environment in which the experiments were completed. The rock types encountered have very similar mechanical properties and the quality of the rockmasses did not vary extensively. Therefore, any variance in the results is best explained by the blast performance itself. (Abstract shortened by UMI.)

APA, Harvard, Vancouver, ISO, and other styles

39

Edmonds, Clive Nicholas. "The engineering geomorphology of Karst development and the prediction of subsidence risk upon the chalk outcrop in England." Thesis, Royal Holloway, University of London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246079.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Brimicombe, A. J. "The application of geomorphological triangular databases in geotechnical engineering." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1985. http://hub.hku.hk/bib/B31207157.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

de, Sousa Eudes Alves 1959. "Impact of geology on ore grade estimation of a porphyry copper deposit." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277264.

Full text

Abstract:

Accurate ore estimation processes are of crucial importance in the mining scenario. Over the last 20 years, one practical approach to improve ore grade estimation has encouraged the need to incorporate the geology of the ore deposit being estimated in the estimation process. The objective of this study is to investigate the impact of the geology on the kriging estimation of the ore grade of a portion of a porphyry copper deposit. Preliminary data analysis demonstrates the need to perform a subsequent variogram modeling and kriging estimation of the ore grade by rock type separation. Global and local estimations were done to assess the influence of the geology on the ore grade estimation at a global and local scales. The results obtained in this study demonstrated that for the portion of the deposit studied the incorporation of the geology does not produce substantial improvement on the ore grade estimation.

APA, Harvard, Vancouver, ISO, and other styles

42

Roth, Mark M. Jr. "Depositional Environment of the Carbonate Cap Rock at the Pine Prairie Field, Evangeline Parish, Louisiana| Implications of Salt Diapirism on Cook Mountain Reservoir Genesis." Thesis, University of Louisiana at Lafayette, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10685670.

Full text

Abstract:

The Pine Prairie Field is situated on a salt dome in northern Evangeline Parish, located in south-central Louisiana. Pine Prairie contains the only known Cook Mountain Formation hydrocarbon reservoir in Louisiana. Operators have targeted and produced hydrocarbons from the Cook Mountain reservoir in eight wells at the Pine Prairie Field. The source and origin of the Cook Mountain’s reservoir properties are unknown. The objective of this study is to determine the origin of the Cook Mountain Formation’s reservoir properties by identifying the processes associated with the formation of a Cook Mountain Reservoir. There are two carbonate outcrops at the surface expression of the Pine Prairie Dome. Samples were taken and thin sections made to determine the relationship, if any, to the Cook Mountain Formation. Thin section analysis of the carbonate outcrop was used to gain a better understanding of the depositional setting present at Pine Prairie Field. Well log, seismic, and production data were integrated to determine that, in all instances, commercial Cook Mountain production is associated with fault zones. The passage of acidic, diagenetic fluids through Cook Mountain fault zones generated areas of vuggy porosity proximal to Cook Mountain faulting. Further, fluctuations in short-term pressure gradients associated with salt diapirism resulted in the vertical migration of hydrocarbons via fault zones. In the Pine Prairie Field, fault seal breakdown occurs in Sparta and Wilcox Reservoirs, subsequently charging the Cook Mountain fault zone. Early hydrocarbon charge from the underlying Wilcox and Sparta Reservoirs prevented additional diagenesis, preserving secondary porosity in areas of Cook Mountain faulting.

APA, Harvard, Vancouver, ISO, and other styles

43

Dada, Olamide. "Reservoir Characterization of the Spraberry Formation, Borden County, West Texas." Thesis, University of Louisiana at Lafayette, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1557545.

Full text

Abstract:

The Spraberry Formation is a Leonardian age submarine fan deposit restricted to the Midland Basin. The formation consists of very fine-grained sandstone, medium to coarse grain size siltstones, organic shales and carbonate mudstones. These rocks show variability in sedimentary structures and bedding types varied from thinly laminated to convolute laminations. Bioturbations were present in some samples and soft sediment deformation, such as water escape features, sediment loading and flame structures.

The Spraberry Formation is a naturally fractured reservoir with low porosity and low matrix permeability. Porosity measured varied from 2% in rocks with poor reservoir quality such as the argillaceous siltstone and mudstone while good reservoir rocks had an average porosity of 9%. Seven lithofacies were identified based on sedimentary structures, grain size and rock fabrics. Petrographic analysis showed four porosity types: (1) intragraular porosity; (2) dissolution porosity; (3) fracture porosity and (4) intergranular porosity. Fractured porosity was only observed in the argillaceous siltstone lithofacies.

The prominent diagenetic influences on the Spraberry Formation are: quartz cementation, quartz overgrowth, illtization of smectite, feldspar dissolution, clay precipitation, carbonate cementation, formation of framboidal pyrite and fracture formation. These diagenetic features were observed using scanning electron microscope (SEM) and in thin sections. Generally, petrophysical properties, such as porosity and permeability, vary gradually from reservoir rocks to non-reservoir rock. Observed trends where: 1) increasing organic and argillaceous content with decreasing porosity and 2) increasing carbonate sediments and calcite cements with decreasing porosity. Mineralogical analysis from FTIR showed an abundance of quartz and calcite, while illite is the prominent clay mineral observed in all samples.

APA, Harvard, Vancouver, ISO, and other styles

44

Nogueira, Fernando Rocha. "Gerenciamento de riscos ambientais associados a escorregamentos : contribuição às políticas públicas municipais para áreas de ocupação subnormal /." Rio Claro : [s.n.], 2002. http://hdl.handle.net/11449/102945.

Full text

Abstract:

Orientador: Kenitiro Suguio
Banca: Omar Yazbek Bitar
Banca: Celso Santos Carvalho
Banca: Flavio Farah
Banca: Leandro Eugenio da Silva Cerri
Resumo: O objetivo desta pesquisa foi a construção de um modelo conceitual e operacional para o gerenciamento municipal de riscos ambientais associados a escorregamentos em áreas de ocupação subnormal. Para tanto, foram adotadas duas vertentes metodológicas: (1) a revisão crítica de ampla bibliografia temática compilada, tendo como parâmetro a aplicabilidade à gestão municipal brasileira; e (2) à luz da teoria, a avaliação dos acertos e das dificuldades da prática pública de gerenciamento de riscos associados a escorregamentos nos municípios visitados ou acompanhados pelo pesquisador. Apresentam-se, ao longo do texto, conceitos e instrumentos operacionais úteis para técnicos e gestores públicos. No capítulo 6, os resultados da pesquisa estão sintetizados na forma de diretrizes e de um modelo para o gerenciamento de riscos ambientais associados a escorregamentos em áreas ocupadas por favelas e loteamentos irregulares, aplicáveis às diferentes realidades ambientais e urbanas do país.
Abstract: The goal of this research was the construction of a conceptual and operative model for the local management of environmental risks associated with landslides in areas of subnormal urbanization. To achieve this goal, two methodological perspectives were adopted: (1) a critical revision of the broad thematic bibliography assembled, having its application to the Brazilian municipal management as a framework; (2) the use of theoretical approaches to evaluate accomplishments and difficulties experienced by public managers of landslide risks in some Brazilian cities. Throughout the paper, concepts and operative tools for technicians and public sector managers are presented. The chapter 6th. presents the synthesis of the products organized as directives and a model for management for environmental risks associated to landslides in sites occupied by slums and illegal settlements. These models are meant to be applicable to diverse environmental and urban realities of the country.
Doutor

APA, Harvard, Vancouver, ISO, and other styles

45

Turk, N. "Engineering properties of andesites and related rocks, with an evaluation of determinative methods." Thesis, University of Newcastle Upon Tyne, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382925.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Voulgari, Chrysoula. "Engineering modelling of the progressive retreat of cliffs." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/91958/.

Full text

Abstract:

In this thesis, the morphologic evolution of uniform c, φ slopes subject to successive failures is investigated. The research is conducted in two parts; the analytical part (employing the limit analysis upper bound method) and the experimental (by small scale model tests). An experimental prototype model to study the influence of water infiltration on the morphologic evolution of natural cliffs subject to progressive retreat is presented. A set of small scale laboratory tests is designed to investigate successive failures. The failure is reached by applying rainfall on the slope through a rainfall simulator device. The moisture content and the suction of the soil during the tests are monitored by soil moisture sensors and tensiometers that are buried inside the slope model. High resolution cameras record the behaviour of the slope model and GeoPIV is used to analyse the frames and obtain the deformations of the slope model during the tests. After a short time of rainfall, vertical cracks appear in the slope model with significant vertical deformations developing. Experimental results indicate that there is a strong connection between moisture content and the occurrence of a landslide. A prediction model of slope failures can be introduced based on the observed moisture content response of the slope models. For the analytical part a semi analytical model on the evolution of intact and slopes with fissures is illustrated. A general analytical solution for the assessment of the stability of homogeneous slopes obeying the linear Mohr-Coulomb criterion accounting for strength degradation, seismic action, formation of tension cracks and seepage is presented and a parametric analysis is run to assess the effect of each factor on cliff evolution. The so-called pseudo-static approach and the pore pressure coefficient ru are employed. Results for a range of internal shearing resistance angle (φ) values of engineering interest are presented in the form of dimensionless ready-to-use stability charts.

APA, Harvard, Vancouver, ISO, and other styles

47

Zhang, Li Zhi. "Application of Bayesian model class selection on differential problems in geotechnical engineering." Thesis, University of Macau, 2012. http://umaclib3.umac.mo/record=b2590616.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Ferreira, Mateus Vidotti. "Análise das pressões do uso e ocupação da terra sobre trecho da faixa de dutos Rio - Belo Horizonte /." Rio Claro : [s.n.], 2009. http://hdl.handle.net/11449/92761.

Full text

Abstract:

Resumo: Em um país de grande extensão territorial como o Brasil, são comuns faixas de dutos com muitas centenas e até milhares de quilômetros. Eles atravessam lugares com diversidade morfológica, rios, ambientes da costa marinha e áreas metropolitanas. A partir do momento em que o duto é instalado, este passa a sofrer influência do ambiente e também causar impacto ao mesmo, como vazamentos, e pesquisas têm interesse nestas questões porque estas envolvem a integridade dos dutos e comprometem o abastecimento dos derivados de petróleo. Neste contexto, este trabalho visa analisar a pressão da cobertura e uso da terra em faixas dos dutos Rio - Belo Horizonte, localizadas em três municípios do Estado do Rio de Janeiro, no período de 1986 a 2005, com a utilização de técnicas de geoprocessamento. Para a identificação e avaliação das pressões dos impactos humanos nas faixas de dutos, foram utilizados dados multitemporais e técnicas de detecção de mudanças. As análises de uso e ocupação da terra consideraram as relações dos sistemas de relevo em áreas de influência dos dutos. A partir destas primeiras análises, um índice de pressão antrópica (IPAd) foi proposto para analisar de forma conjunta as classes de uso e ocupação da terra. O mapa de IPAd e o mapa de variação de IPAd, possibilitaram a identificação de áreas de maior e menor pressão antrópica à faixa de dutos, bem como a variação desta pressão ao longo do período analisado.
Abstract: In a country with a great territorial extension as Brazil, pipelines with a lot of hundreds and even thousands of kilometers are common. They cross morphologic diversity places, rivers, coastal marines environments and metropolitan areas. After their installation, the pipelines suffer environmental influence that can cause impacts on them, as emptying, and some researchers have interest in these questions because it involves the pipeline integrity and compromise the supplying of oil derivates. In this context, this work aim to analyze the pressures of land use and land cover on Rio - Belo Horizonte pipelines strip, located in three municipal districts of Rio de Janeiro State, during 1986 to 2005, with geoprocessing techniques. To identify and evaluate the pressures of human impacts on the pipelines strip, multi-temporal datasets and change detection techniques were used. The analyses of land use and land cover considered the relationships of relief systems in some areas of pipeline influence. From these first analyses a pressure human index (IPAd) was proposed for pipelines strip, objecting an integrated study form between land cover and land use classes. The IPAd map and IPAd variations map, enabled the identification of areas with high and low pressure human for pipelines strip, as well as a variation of the pressures over the analyzed period.
Orientador: Paulina Setti Riedel
Coorientador: Mara Lúcia Marques
Banca: Cenira Maria Lupinacci da Cunha
Banca: Diana Sarita Hamburger
Mestre

APA, Harvard, Vancouver, ISO, and other styles

49

Grimes, John. "The engineering geology and stability of the rapidly alternating limestone and mudrock sea cliffs of Glamorgan." Thesis, University of South Wales, 1986. https://pure.southwales.ac.uk/en/studentthesis/the-engineering-geology-and-stability-of-the-rapidly-alternating-limestone-and-mudrock-sea-cliffs-of-glamorgan(fb92bdf6-8f88-4191-8e90-a09aa19df107).html.

Full text

Abstract:

Processes, mechanisms and parameters significant to instability have been identified from an investigation which has included 1) Geomorphological mapping and appraisal. 2) Field Monitoring. 3) Quantitative assessement of rock mass geometry, mineralogy, engineering properties and physical/physico-chemical behaviour. The north coast of the Bristol Channel is exposed to severe marine attack. Weak lithologies are exploited and the cliffs undermined. Principal failure modes recognised were toppling and vertical translation. Thermal gravimetry indicated allotropy of sulphide minerals. The least stable forms were identified in the more calcareous mudrocks, and a laboratory leaching experiment demonstrated that weatherability was greatest in such mudrocks. Pyrite oxidation was shown not only to enhance carbonate leaching, but to degrade the clay minerals and induce rehydration of the double layer. Uniaxial compressive strengths of representative mudrocks were determined for a range of moisture contents. Mean values varied between 5 and 64 MPa. An investigation into deformation anisotropy of a clay shale is also recorded. Meso and micro scale carbonate filled discontinuities are apparent in the limestones. Hoek & Brown's criterion was used to characterise results of a programme of strength testing. Average uniaxial compressive strength of the intact limestone was 234 MPa. In the field, many major discontinuities were identified as tensile in origin. Results from shear tests along limestone tension fractures could not be adequately represented by Barton's equation. A power relationship between shear strength and normal stress gave good correlation. Leaching, moisture and temperature movements, freeze-thaw and pressure release all act to impair stability. Extreme weather was shown to trigger failure. Limiting equilibrium analyses of toppling showed that torsional shear strength mobilized along the failure surface in the plane of toppling contributed significantly to forces resisting toppling. Both local masonry protection and pre-split blasting are recommended as viable expedients in protection and stabilization works.

APA, Harvard, Vancouver, ISO, and other styles

50

Mockett, Lawrence David. "The influence of diagenesis and microfabric evolution on the engineering characteristics of sand and sandstone as illustrated by two Mesozoic rocks from the United Kingdom." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296144.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic 'Engineering geology'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles