Log in

Relevant bibliographies by topics / Excavations

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Excavations'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2024

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

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Excavations.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Excavations"

1

Yoltar-Yildirim, Ayşin. "Raqqa: The Forgotten Excavation of an Islamic Site in Syria by the Ottoman Imperial Museum in the Early Twentieth Century." Muqarnas Online 30, no. 1 (January 31, 2014): 73–93. http://dx.doi.org/10.1163/22118993-0301p0005.

Full text

Abstract:

Raqqa, in Syria, was the only Islamic site excavated by the Ottoman Imperial Museum during its existence in the late nineteenth and early twentieth century. Although the Imperial Museum may not have been searching specifically for an Islamic site of the medieval period to excavate, its response to the plundering of Raqqa, which began as early as 1899, was to pursue an archaeological excavation in a systematic manner. Two campaigns were conducted, under the directorships of Macridy and Haydar Bey, in 1905–6 and 1908 respectively. Although not lasting more than a couple of months, they were relatively important from the perspective of the Imperial Museum and Islamic archaeology at that time. This article focuses on the history of these Raqqa excavations, namely, the reasons the Imperial Museum began excavating there, how it conducted its excavations, and, finally, the finds and the way they were displayed at the Museum. Existing archival documents on the excavation, along with the earliest inventories of the finds in the Imperial Museum and the personal letters of Macridy, all hitherto unpublished, are analyzed in order to shed light on these long forgotten excavations.

APA, Harvard, Vancouver, ISO, and other styles

2

Liu, Jianwei, Bingshuang Xue, Haibo Wang, Xuemin Zhang, and Yongxing Zhang. "Numerical Study on the Behavior of an Existing Tunnel during Excavating Adjacent Deep Foundation Pit." Sustainability 15, no. 12 (June 19, 2023): 9740. http://dx.doi.org/10.3390/su15129740.

Full text

Abstract:

The excavation of a deep foundation pit adjacent to an existing tunnel may lead to the large deformation and induce damages in the tunnel structure. However, the influence on existing tunnel structure from nearby excavations has not been understood clearly, since it is affected by complex influencing factors of not only the geological and topographical conditions but also the construction method and positional relationship of the adjacent structures. This paper presents a numerical investigation into an existing underground rail transit line during the excavation of an adjacent deep foundation pit, in which the behavior of the existing tunnel structure from excavating the aforementioned foundation pit is clarified, and the effectiveness of the adopted three-dimensional model is confirmed by comparison between the numerically calculated and field-measured ground settlement of the monitoring point. The results demonstrate that the deformation of the existing tunnel structure is mostly induced by the excavation of the deep foundation pit. This study can provide a reference of deep excavations adjacent to existing infrastructures.

APA, Harvard, Vancouver, ISO, and other styles

3

Ying, Hong-Wei, Kang Cheng, Li-Sha Zhang, Chang-Yu Ou, and Yong-Wen Yang. "Evaluation of excavation-induced movements through case histories in Hangzhou." Engineering Computations 37, no. 6 (February 7, 2020): 1993–2016. http://dx.doi.org/10.1108/ec-06-2019-0256.

Full text

Abstract:

Purpose Deep excavation in soft clay often causes additional deformations to surroundings. Then, if deformations cannot be predicted reasonably, the adjacent buildings may be threatened by the deep excavation. Based on the good field observations from ten deep excavations in Hangzhou, this paper aims to thoroughly investigate the characteristics of wall deflections and ground settlements induced by deep excavations. Design/methodology/approach On the basis of good field observation of ten deep excavations, the performances of excavations, supported by contiguous pile in Hangzhou, were studied, and also compared with other case histories. Findings The maximum wall deflections (dhm) rang mostly from 0.7 to 1.2 per cent He, where He is the final excavation depth, larger than those in Taipei and Shanghai. The observed maximum ground settlement in the Hangzhou cases generally ranges from 0.2 to 0.8 per cent He. Then, the settlement influence zone extends to a distance of 2.0-4.0 He from the excavation. The relatively large movements and influence zones in Hangzhou may be attributed to low stability numbers, large excavation widths and the creep effect. The excavation width is justified to have a significant influence on the wall deflection. Therefore, to establish a semi-empirical formula for predicting the maximum wall deflection, it is necessary to include the factor of excavation width. Originality/value The relevant literature concentrated on the characteristics of deep excavations supported by the contiguous pile wall in Hangzhou soft clay can rarely be found. Based on the ten deep excavations with good field observation in Hangzhou, the characteristics of wall deflection and ground settlements were comprehensively studied for the first time, which can provide some theoretical support for similar projects.

APA, Harvard, Vancouver, ISO, and other styles

4

Chiu, Hao-Wei, Chia-Feng Hsu, Fu-Huan Tsai, and Shong-Loong Chen. "Influence of Different Construction Methods on Lateral Displacement of Diaphragm Walls in Large-Scale Unsupported Deep Excavation." Buildings 14, no. 1 (December 21, 2023): 23. http://dx.doi.org/10.3390/buildings14010023.

Full text

Abstract:

This study examines the influence of different construction methods on the lateral displacement of diaphragm walls in large-scale, unsupported deep excavations. Using the three-dimensional finite element method (FEM) with PLAXIS 3D 2017 software, the research assesses how varying construction techniques impact wall stability, particularly in proximity to sensitive structures like metro systems. The project uniquely integrates peripheral top-down and central bottom-up approaches to minimize environmental disruption. Key focus areas include the roles of back-pull slabs, zoned excavation, and cross walls in reducing wall deformation. Findings reveal that zoned excavation significantly controls lateral displacement on longer site sides, enhancing adjacent structure safety and overall construction integrity. Back-pull slabs are shown to effectively decrease top wall deformation, thereby increasing structural stiffness. Moreover, despite their considerable length (nearly 60 m), cross walls play a crucial role in controlling lateral deformation along the excavation’s length. These insights offer valuable guidance for future projects, especially in regions like Taiwan, where experience with such large-scale, unsupported excavations is limited.

APA, Harvard, Vancouver, ISO, and other styles

5

Onderka, Pavel, Vlastimil Vrtal, Gabriela Jungová, and Jiří Honzl. "Preliminary Report on the Eighteenth Excavation Season of the Archaeological Expedition to Wad Ben Naga." Annals of the Náprstek Museum 42, no. 1 (2021): 67–83. http://dx.doi.org/10.37520/anpm.2021.004.

Full text

Abstract:

The eighteenth excavation season of the Archaeological Expedition to Wad Ben Naga focused on the continued excavations of the so-called Isis Temple (WBN 300; more specifically on the frontal part of the proper temple), the continued excavations of structure WBN 250, and the continued excavations of cemetery WBN C260.

APA, Harvard, Vancouver, ISO, and other styles

6

Zhu, Yihong, Mingming Wu, Gangping Zhang, Jianlin Yu, Qiliang Xu, Riqing Xu, and Tianci Yu. "The Influence of Geological Conditions in the Hangzhou Bay Area on the Deformation Behavior of Deep Excavations." Journal of Marine Science and Engineering 11, no. 9 (September 21, 2023): 1836. http://dx.doi.org/10.3390/jmse11091836.

Full text

Abstract:

The deformation behavior of deep excavations is affected by many factors, among which the geological conditions are greatly affected. Hangzhou Bay is affected by marine siltation and river alluvium, and the geological conditions within the urban area of Hangzhou are quite different. In this paper, the geological and deformation data of 79 deep excavation cases in the Hangzhou urban area were collected, and the statistical analysis showed that the deformation control of excavations in the silt area was poor. The average maximum lateral wall displacement of deep excavations of the Hangzhou urban area was 0.41%H (H was the depth of the excavation), the average value of the alluvial area was 0.22%H, and the average value of the silted area was 0.55%H. The influence of geological conditions, wall type, and construction period on the deformation of excavations was compared, and the deformation behavior of excavations in the silted area was clearly affected by various factors.

APA, Harvard, Vancouver, ISO, and other styles

7

Adhikari, Govind Raj, R. Balachander, and A. I. Theresraj. "Execution of Safe Blasting Under Adverse Conditions of a Powerhouse Complex: A Revisit to Sardar Sarovar Project, India." Technical Journal 2, no. 1 (November 10, 2020): 56–67. http://dx.doi.org/10.3126/tj.v2i1.32832.

Full text

Abstract:

When the excavation of the underground powerhouse of the Sardar Sarovar Project, India was nearly complete, cracks were observed on the upstream and downstream walls of the powerhouse, and the installed instrumentation readings sounded an alert for the instability of the powerhouse cavern that could possibly derail the project, further excavation in the powerhouse cavern was halted. After completing stabilisation measures, the remaining underground excavations by drill and blast method were to be completed. This paper revisits case studies of controlled blasting for the remaining excavations, namely a construction ramp, turbine pits, draft tube tunnels connecting the powerhouse, and the concrete plugs erected at the exit ends of the draft tube tunnels. To ensure overall stability around the excavations, blast vibration was controlled by planning the excavations in proper sequences. The damage outside the planned line of excavations was controlled by adopting modified line drilling/smooth blasting techniques. The details of the sequence of excavations, drilling and blasting parameters, compiled from previous publications, are presented in this paper. This paper also describes the reasons why concrete plugs were erected in the draft tube tunnels, the details of the concrete plugs, the optimised drilling and blasting procedure for safe removal of the plugs, and the method adopted to quantify the damage.

APA, Harvard, Vancouver, ISO, and other styles

8

Toksarov, V. N., I. A. Morozov, N. L. Beltyukov, and A. A. Udartsev. "Deformation of underground excavations under conditions of the Gremyachinsk potassium salt deposit." Mining informational and analytical bulletin, no. 7 (June 20, 2020): 113–24. http://dx.doi.org/10.25018/0236-1493-2020-7-0-113-124.

Full text

Abstract:

The analysis of rock mass deformation around permanent excavations in sylvinite seam at a depth of 1100 m is presented. Surrounding rock mass features occurrence of hard anhydrite-dolomite rocks in the roof and soft carnallite in the floor of underground excavations. The test openings were driven with height of 3.7 m and width of 6.0 m using a cutter- loader. The deformation control used 6 measurement points in the excavations with support by rockbolting in the patterns of 1.0×1.0, 1.5×1.5 and 2.0×2.0 m. Two measurement points were arranged in an unsupported excavation. It is found that the key factors influencing deformation of the perimeter of underground excavations are the rockbolting design and the geological structure of enclosing rock mass. For instance, the reinforcement of roof support decreases values and velocities of deformation both in the roof and sidewalls of excavations. The highest values of velocities of displacements are recorded in the floor. The increased displacements in the floor rocks should be expected when the distance between the excavation perimeter and the nearest interface of seams (layers) in the floor of a tunnel decreases. The presented results can be of use to experts in the fields of geomechanics as well as in design and construction of underground excavations.

APA, Harvard, Vancouver, ISO, and other styles

9

Sutanto, Anthonius Steven, Paulus Pramono Rahardjo, and Aswin Lim. "Influence of Pre-Stressing on Tieback Retaining Wall for Sandy Soils Excavations." Journal of the Civil Engineering Forum 7, no. 3 (August 31, 2021): 253. http://dx.doi.org/10.22146/jcef.61564.

Full text

Abstract:

Pre-stressed ground anchor systems or tieback systems are commonly used at wide and irregular-shaped excavations, with the advantage of lower cost and ease of construction compared to the braced excavations, but they come with the drawback on permits for excavations near buildings and tunnels. Research on tieback systems in sands was generally conducted. However, the studies on the correlation between the retaining wall deflection and pre-stress force are few. The objectives of this paper are to study the influence of pre-stress force, depth of excavation, wall embedment length, and soil shear strength that is represented by soil friction angle on the deflection and soil pressure acting on the retaining wall. The parametric study was conducted on an excavation in sand using the finite element method with the Hardening soil model. The results showed that a 50 kN/m increase in pre-stress force reduced the wall deflection on top of the wall by 0.005–0.083% of excavation depth. However, the pre-stressing influence in reducing wall deflection at excavations became less significant along with the sand density increase due to higher friction angle contribution to excavation stability. Moreover, the pre-stress force needed for stabilization of the wall with long embedment length is smaller than those on the wall with shorter embedment length, since the embedment length increase of 0.25 times of excavation depth reduces wall top deflection by 0.002–0.095% of excavation depth. Also, the increase of soil density reduces the need for wall embedment length, so at dense sand, the embedment length of 0.5 times of excavation depth is sufficient to support the excavation.

APA, Harvard, Vancouver, ISO, and other styles

10

Wang, Zhong W., Charles WW Ng, and Guo B. Liu. "Characteristics of wall deflections and ground surface settlements in Shanghai." Canadian Geotechnical Journal 42, no. 5 (October 1, 2005): 1243–54. http://dx.doi.org/10.1139/t05-056.

Full text

Abstract:

The characteristics of wall deflections and surface ground settlements at six deep multi-strutted excavations in Shanghai soft soils were studied and compared with those of similar case histories reported worldwide, particularly in Taipei and Singapore. The measured wall deflections at the six metro stations of the Pearl II Circle Line show a typical bulging profile (or deep-seated shape) at the end of the excavation. The ratio between the measured maximum wall deflection and the depth of the excavation (δhm /H) in Shanghai was <0.007, which was similar to the ratio measured in Taipei, but it was substantially smaller than the Peck bounding limit of 0.01. At each station, the measured maximum displacement was <0.45% of the final excavation depth. Because of the large aspect ratios of the underground excavations, no significant three-dimensional effects or corner effects were observed. The measured maximum settlements of the six metro excavations fell within zone I of the Peck classical normalized settlement-distance chart. These small measured settlements were consistent with the small measured wall deflections. The observed relatively small maximum wall deflections can likely be attributed to the use of prestressed struts, the constant adjustment of the stresses to about 0.7 times the total vertical stress during the excavation, and the short horizontal span of the excavation.Key words: multi-strutted excavations, soft clay, Shanghai, metro stations, horizontal deflection, settlement.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Excavations"

1

Spangler, Philip. "Excavations." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406140330.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Goessling, Sybil Elizabeth Hatch. "Interactive design of braced excavations." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45728.

Full text

Abstract:

Construction of braced excavations in major urban areas has increased over the last few decades. It is a major concern of the designer to limit ground movement around an excavation in order to prevent damage to adjacent structures, utilities and roads. Existing design methods can accurately predict ground and wall movement of a braced excavation, but the calculations become complex when multiple construction stages are considered, or if different design schemes are compared. This thesis presents an interactive personal computer program (called MOVEX) to facilitate braced excavation design. Using input variables for wall stiffness, strut stiffness, and strut spacing, MOVEX includes four design options that allow the designer to adjust the variables in order to develop the optimal bracing design. Details of the design theory, input and output data, and a user's guide are included in this thesis. In addition, the settlement of sand due to pile driving was investigated. A predictive method is presented that relates sand densification to the ground acceleration caused by pile driving.
Master of Science

APA, Harvard, Vancouver, ISO, and other styles

3

Shao, Yong C. "Information feedback analysis in deep excavations." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Rizkalla, Maged Kamal. "Elasto-viscoplastic modelling of rock excavations." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60595.

Full text

Abstract:

The first part of the thesis describes the concepts of viscoplasticity as a continuous plasticity theory highlighting different kinds of yield functions, plastic potentials and visocplastic constitutive laws.
A 2-dimensional elasto-viscoplastic finite element model for stress/stability analysis of mining excavations has been developed for use on microcomputers. An iterative explicit time stepping scheme is implemented. The program uses automatic time-step calculator based on equations giving a limit on the time step in an attempt to prevent numerical instability when common forms of isotropic yield functions and plastic potentials are used in the viscoplastic solution. When the input data are read parallel to the analysis undertaken the user can simulate compound behaviour by stopping the analysis, examining the results graphically and restarting it again and possibly implementing a certain decision in the subsequent appended input. This also imposes no limit on the number of time stations at which instantaneous changes like elements cut, elements backfilled, loads added or simply outputs are required. The program is equipped with graphical pre- and post- processors.

APA, Harvard, Vancouver, ISO, and other styles

5

Easton, Donald Fyfe. "Schliemann's excavations at Troy, 1870-1873." Thesis, University College London (University of London), 1989. http://discovery.ucl.ac.uk/1317763/.

Full text

Abstract:

This study is based on Schliemann's unpublished Troy excavation note books from 1870-73. It attempts to reconstruct his activities, to locate and identify the features he found, and to stratify and date the several thousand objects he recorded. There is some degree of synthesis with the later findings of Dörpfeld and Blegen, and a review, in the light of all these findings, of the chronology of the Bronze Age strata. The study covers all periods from Early Bronze Age to Byzantine, and all classes of material. A reconstructed contour-plan permits a new and closer understanding of Schliemann's progress. Fifty-two areas of work are distinguished in each of which an outline stratigraphy can be reconstructed. Objects are assigned to specific strata, although Schliemann's frequent failure to specify from which trench which objects came can inject varying degrees of uncertainty into the operation. The sequence of fortifications on the North side of the site is greatly clarified, especially for Troy II and VI. Buildings in the citadel interior are more closely dated, and the sequence in Troy II is substantially re-organised to allow for at least twelve building-phases. The earth-movements supposed to have demolished Troy VI are unlikely to have antedated late VIIa. Troy I-II.4 belong to EBII (c.3000-2465); wheelmade plates and one-handled tankards first appear in II.1. Troy II.5-III belong to EBIII (c.2465-2005); two-handled cups and tankards appear in II.5 after an increase of wheelmade plain ware in II.4. Troy III is contemporary with early Middle Helladic. Troy IV-V belong to the Anatolian Middle Bronze Age (c.2005-1712), and VI-VII are purely Late Bronze Age (c.1712-1070). VIh was destroyed c.1270(?), probably around the end of LHIIIBl, and VIIa was destroyed c.1190(?) during LHIIIC.

APA, Harvard, Vancouver, ISO, and other styles

6

SPRINGER, FERNANDA OTTO. "DEFORMABILITY ANALYSIS OF SOIL NAILING EXCAVATIONS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2001. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1983@1.

Full text

Abstract:

COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
A utilização de inclusões passivas para reforços de solos, técnica comumente conhecida como solo grampeado, vem tendo aceitação crescente junto a profissionais de engenharia civil, em especial no Rio de Janeiro. Esta técnica, porém, carece de um estudo detalhado sobre a influência dos parâmetros relevantes na deformabilidade de maciços grampeados. Os grampos são inclusões rígidas, instaladas suborizontalmente, sem tensão ou trecho livre, pois as barras de aço são introduzidas em um furo preenchido com calda de cimento. As forças axiais nos grampos são obtidas através da descompressão lateral causada pela escavação do solo. O grampeamento é feito na massa de solo à medida que escavações são executadas em etapas, obtendo se uma zona reforçada que atua como suporte da massa de solo posterior, sem reforço. A face frontal da escavação é usualmente protegida por concreto projetado, sem funções estruturais. Esta pesquisa objetiva avaliar a influência dos diversos parâmetros geotécnicos e geométricos no comportamento tensão deformação de escavações grampeadas com face vertical e superfície do terreno horizontal. A análise paramétrica foi realizada pelo FLAC (Fast Lagrangian Analysis of Continua) que é um programa computacional baseado no método das diferenças finitas. Este programa simula o comportamento bidimensional de estruturas reforçadas, constituídas de solo e ou rocha, que possam ser submetidos a escoamento plástico quando o limite de resistência é atingido. Os resultados mostram que o módulo de Young (E) e a coesão do solo (c) são de grande relevância para o projeto de estruturas grampeadas. Adicionalmente, as análises indicam que a resistência ao cisalhamento na interface solo-grampo (qs) é também um parâmetro importante, particularmente nos casos com grampos de comprimento (L) inferior a 80 por cento da profundidade de escavação (H) (L/H < 0,80). Recomenda-se que o valor de qs seja determinado diretamente a partir de ensaios de arrancamento no campo. No que se refere à inclinação dos grampos, os resultados mostram que não há diferenças significativas nos deslocamentos do maciço reforçado para lambda menor ou igual a 10 graus. Estes resultados são particularmente interessantes do ponto de vista de execução, pois inclinações da ordem de 10 graus facilitam os procedimentos de injeção no campo. Os resultados obtidos nesta pesquisa indicam o uso de comprimentos de grampos maiores que 70 por cento da altura de escavação (L/H > 0,70) na técnica do solo grampeado.
The use of passive inclusion for soil reinforcements, technique usually known as soil nailing, has been gaining growing acceptance within civil engineering professionals,especially in Rio de Janeiro. However this technique lacks a more detailed study on the elevant parameters influencing the deformability of soil nailed masses. The nails are rigid inclusions, sub horizontally positioned, without tension or free space between the nail and the surrounding soil mass. The axial forces on the nails are developed due to lateral decompression caused by soil excavation. As the excavation stages proceed, the nails are successively being installed, producing a reinforced zone, which acts as a support for the soil mass. The frontal face of the excavation is usually protected by shotcrete, and has no structural functions. This research aims at evaluating the influence of the various geotechnical and geometric parameters on the stress strain behavior of nailed excavations, with vertical face and horizontal soil surface. The parametric analysis was performed using FLAC (Fast Lagrangian Analysis of Continua), which is a computer program based on the finite difference method. This program simulates bi dimensional behavior of reinforced structures of soils and or rocks,which may be submitted to plastic flow when the strength limit is reached. The results show that the Youngs modulus (E) and soil cohesion (c ) have a very significant influence on the displacement of a soil nailing structure. The analysis also indicates that the mobilized shear strength at the soil nail interface (qs) is also an important parameter, particularly for nail lengths (L) smaller than 0,80 of the excavation height (H) (L/H < 0,80). It is therefore recommended that qs be directly determined by pullout in situ tests. Regarding nail inclination the results suggests no significant influence on the reinforced soil mass displacement for alpha less or equal than 10 degrees. These results are particularly relevant for engineering practice, because a 10 degrees inclination facilitates grouting injections in the field. The results in this research indicates the use of nail lengths (L) greater than 0,70 of the excavation height (H) (L/H greater than 0,70) in soil nailing technique.

APA, Harvard, Vancouver, ISO, and other styles

7

Whelan, Michael P. (Michael Paul) 1968. "Performance of deep excavations in Boston." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/37790.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Hashash, Youssef M. A. "Analysis of deep excavations in clay." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13199.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Bentler, David J. "Finite Element Analysis of Deep Excavations." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30767.

Full text

Abstract:

This dissertation describes enhancements made to the finite element program, SAGE, and research on the performance of deep excavations. SAGE was developed at Virginia Tech for analysis of soil-structure interaction problems (Morrison, 1995). The purpose of the work described in this text with SAGE was to increase the capabilities of the program for soil-structure analysis. The purpose of the research on deep excavations was to develop a deeper understanding of the behavior of excavation support systems. The significant changes made to SAGE during this study include implementation of Biot Consolidation, implementation of axisymmetric analysis, and creation of a steady state seepage module. These changes as well as several others are described. A new manual for the program is also included. A review of published studies of deep excavation performance and recent case histories is presented. Factors affecting the performance of excavation support systems are examined, and performance data from recent published case histories is compared to data from Goldberg et al.'s 1976 report to the Federal Highway Administration. The design, construction, and performance of the deep excavation for the Dam Number 2 Hydroelectric Project is described. Finite element analyses of the excavation that were performed with SAGE are presented and discussed.
Ph. D.

APA, Harvard, Vancouver, ISO, and other styles

10

Xia, Huanliang. "An analysis for braced excavations in clay." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0010/NQ42487.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Excavations"

1

Mason, Neal. Excavations. Calstock, Cornwall, U.K: Peterloo Poets, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Peter, Riley. Excavations. Hastings, East Sussex: Reality Street, 2004.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Borrow excavations. Edmonton: Environmental Sciences Division, 2000.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Alec, Down, Magilton J. R, and Chichester (England) District Council, eds. Chichester excavations. Chichester: Chichester District Council, 1993.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

N, Edwards B. J., and Webster P. V, eds. Ribchester excavations. Cardiff: University College, Dept. of Extra-Mural Studies, 1985.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

1939-, Cunliffe Barry, Down Alec, and Rudkin D. J, eds. Chichester excavations. Chichester: Chichester District Council, 1996.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chakravarty, Kalyan Kumar. Dangawada excavations. Bhopal: Commissioner, Archaeology and Museums, Madhya Pradesh, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

1948-, Gurumurthi S., Gandhi N. Marxia, Santhalingam C, Selvaraj S. Archaeological officer, and Tamil Nadu (India). Dept. of Archaeology., eds. Excavations of archaeological sites in Tamil Nadu, Mankulam excavation, 2007. Chennai: Tamil Nadu State Dept. of Archaeology, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Isabel, Bennett, and Organisation of Irish Archaeologists, eds. Excavations: Summary accounts of archaeological excavations in Ireland. Bray: Wordwell, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Isabel, Bennett, and Organisation of Irish Archaeologists, eds. Excavations: Summary accounts of archaeological excavations in Ireland. Dublin: The Organisation, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Excavations"

1

Fuggle, Sophie. "Excavations." In Foucault/Paul, 9–52. New York: Palgrave Macmillan US, 2013. http://dx.doi.org/10.1057/9781137323408_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Falkof, Nicky. "Excavations." In Satanism and Family Murder in Late Apartheid South Africa, 17–31. London: Palgrave Macmillan UK, 2015. http://dx.doi.org/10.1057/9781137503053_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Wietek, Bernhard. "Excavations." In Slopes and Excavations, 63–179. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-35853-2_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Williams, Jennifer. "Disruptive Excavations." In Archaeology of the Political Unconscious, 107–41. London: Routledge, 2024. http://dx.doi.org/10.4324/9781003216148-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

"Excavations." In Contributions to Global Historical Archaeology, 129–60. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47172-8_5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Harrison, Jane, and David Griffiths. "Excavations." In Beside the Ocean, 53–99. Oxbow Books, 2019. http://dx.doi.org/10.2307/j.ctvhhhdmc.13.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

LESURE, RICHARD G., and TOMÁS PÉREZ SUÁREZ. "Excavations." In Settlement and Subsistence in Early Formative Soconusco, 53–72. Cotsen Institute of Archaeology Press, 2010. http://dx.doi.org/10.2307/j.ctvdjrqf7.10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Fishkin, Shelley Fisher. "Excavations." In Lighting Out for the Territory, 70–125. Oxford University Press, 1998. http://dx.doi.org/10.1093/acprof:oso/9780195121223.003.0003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

"Excavations." In Fundamental Building Technology, 50–63. Routledge, 2013. http://dx.doi.org/10.4324/9780203155172-10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Young, Andrew, Alexander Kidd, Nigel Blades, Wendy Carruthers, Nick Corcos, Michael Costen, Simon Davis, et al. "Excavations." In Eckweek, Peasedown St John, Somerset, 51–112. Routledge, 2020. http://dx.doi.org/10.4324/9781003016526-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Excavations"

1

"New Archaeological Discoveries: Gates and Turrets of 16th century Burmese Royal Capital of Haṁsāvatī | ရှးေ ရောငး် သရု ေသနဆငုိ ှ် ာရေ့ေ ှခိေ ျကအ် သစမ် ျား - (၁၆) ှာစ ုလကှ် ာ ေသံ ာဝေမီ မုိ ့ရောမ် ေေခံ ါးရေါကန် ငေ ပ့် ေအးုိ များ." In The SEAMEO SPAFA International Conference on Southeast Asian Archaeology and Fine Arts (SPAFACON2021). SEAMEO SPAFA, 2021. http://dx.doi.org/10.26721/spafa.pqcnu8815a-11.

Full text

Abstract:

This paper explores the styles of construction and the city features of the sixteenth century royal capital of Haṁsāvatī, located in Bago, Myanmar. It was founded by King Bayinnaung in 1566 CE. Throughout its existence, the ancient city has been devastated by natural disasters, weak heritage conservation policies, and urban encroachments. Starting from 2018, excavation work on Haṁsāvatī wall was started and research was carried out on up to four excavation mounds. Archaeological excavations have revealed a wealth of evidence on architecture, including the city walls, gateways, and turrets. This research examines the architectural elements found during the excavations of the Haṁsāvatī wall, construction techniques, renovations and destructions throughout centuries. New hypotheses and discoveries from excavations, cross-examinations with historical records will also be presented. ဤစာတမ်းငယ်သည် မမန်မာနိုင်ငံ၊ ပဲခူးမမို့တွင် တည်ရှိသသာ (၁၆) ရာစုနှစ်လက်ရာ ဟံသာဝတီမမို့သတာ်၏ တည်သောက်မှုပုံစံနှင့် မမို့မပအင်္ဂါရပ်တို့ကို ရှာသွွသွာ်ထုတ်ထားပါသည်။ ဤမမို့သတာ်ကို ဘုရင့်သနာင်မင်းတရားကကီးက သအဒီ (၁၅၆၆) တွင် စတင်တည်သထာင်ခဲ့မခင်းမွစ်သည်။ ရာဇဝင်နှင့်မှတ်တမ်းများအရ မမို့သဟာင်းသည် သဘာဝသဘးအန္တရာယ်၊ ထိန်းသိမ်းမှုမူဝါဒညံ့ွျင်းမှုများနှင့် မမို့မပကျူးသကျာ်မှုများကို တည်ရှိလာသည့်ကာလတစ်သလှောက် များစွာခံစားခဲ့ရသသးသည်။ (၂၀၁၈) ခုနှစ်မှ စတင်၍ ဟံသာဝတီမမို့သဟာင်းတူးသွာ်မှုလုပ်ငန်းများကို စတင်နိုင်ခဲ့မပီး လက်ရှိအချနိ ်အထိ တူးသွာ်မှုကုန်းသလးခုအထိ သုသတသနမပုလုပ်နိုင်ခဲ့မပီးမွစ်ပါသည်။ မမို့ရိုး၊ မမို့တံခါးသပါက်၊ မပအိုးအစရှိသည့် များစွာသသာ ဗိသုကာေိုင်ရာအသထာက်အထားများကိုလည်း သရှး သဟာင်းသုသတသနေိုင်ရာတူးသွာ်မှုများမှတစ်ေင့် သွာ်ထုတ်နိုင်ခဲ့မပီးမွစ်ပါသည်။ ယခုသုသတသနသည် ဟံသာဝတီမမို့ရိုးတူးသွာ်မှုမှ သတွ့ရှိရသည့် ဗိသုကာေိုင်ရာ အင်္ဂါရပ်များ၊

APA, Harvard, Vancouver, ISO, and other styles

2

Kariyawasam, Shahani, and Warren Peterson. "Revised Corrosion Management With Reliability Based Excavation Criteria." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64536.

Full text

Abstract:

For decades, TransCanada Pipelines has used inline inspection (ILI) to manage the threat of corrosion on gas pipelines. Immediate integrity was addressed using rupture pressure ratio and leak criteria, and future integrity was addressed using a growth assessment. However, a review of excavations based on predictions of defect growth shows that few excavations actually lead to repairs. This study investigated the areas of undue conservatism in both the integrity assessments and the excavation criteria. All aspects of the immediate and future integrity assessment based on ILI were examined. All relevant uncertainties were accounted for in calculating the reliability of the pipeline. A new basis of defining excavation criterion was established based on a reliability assessment and calibration. This criterion was validated against previous ILI based excavations which reveal the features that actually required repair. The criterion was also compared to reliability based criteria recommended in Annex O of the CSA Z662 which gives guidelines for Reliability Based Design and Assessment. This paper addresses the practical limitation of data and presents methods for extracting best information from available data. Case studies that demonstrate the application of the revised assessment method and criterion are also discussed.

APA, Harvard, Vancouver, ISO, and other styles

3

Wong, L. W. "Numerical Analyses on Wall Deflections and Ground Surface Settlements in Excavations." In The HKIE Geotechnical Division 42nd Annual Seminar. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.133.42.

Full text

Abstract:

Ground movements may cause damages to structures. Accurate estimations of ground movements are therefore essential for the risk assessment programs for projects involving underground constructions. Presented herein is a study on the influence of various parameters on the magnitudes and the distributions of ground movements during deep excavations with emphasis on the shapes of settlement troughs. Two-dimensional finite element analyses were conducted on 5 cases for the east end of Xiaonanmen Station in Taipei Metro. The hardening soil with small-strain stiffness was adopted to simulate the nonlinear stress-strain relationship of soils. The results indicate that the shapes of the settlement troughs are primarily affected by the depths of excavations and are relatively insensitive to the width of excavation or the thickness of the retaining wall. Based on the results obtained, the relationship between the width of the influence zone of settlement and the depth of excavation is established.

APA, Harvard, Vancouver, ISO, and other styles

4

Karabinakis, Alexandros-Stavros S., Georgios Styliaras, and Nikolaos M. Avouris. "Excavations go mobile: A web-based mobile application for archaeological excavations." In 2020 11th International Conference on Information, Intelligence, Systems and Applications (IISA). IEEE, 2020. http://dx.doi.org/10.1109/iisa50023.2020.9284389.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Desjardins, Guy, John MacKenzie, and David Aguiar. "Determining the Number of Excavations Required to Confirm the Presence or Absence of SCC on a Pipeline Following an SCCDA Process." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64701.

Full text

Abstract:

The pipeline industry has been managing the threat of Stress Corrosion Cracking (SCC) for several years using the methods developed by NACE SCCDA [1] (Stress Corrosion Cracking Direct Assessment) and ASME B31.8S [2] standards. SCCDA is a widely accepted tool for assessing the threat of Stress Corrosion Cracking in pipelines. The process utilizes data from direct examinations at excavations to validate the process as well as to address existing SCC anomalies, if found. However, neither the recommended practices nor the literature provide a usable and practical method for determining the number of excavations necessary for the excavation program based on observed results. To address this question, the Pipeline Research Council International (PRCI) sponsored a project to develop a statistically defendable procedure to determine the number of excavations which would be required to validate the SCCDA process and confirm either the presence or absence of SCC.

APA, Harvard, Vancouver, ISO, and other styles

6

Durham, C., M. Grenon, E. Karampinos, and J. F. Dorion. "Numerical Investigation on the Impact of Drift Geometry Representation on the Assessment of Wedge Formation Using DFN Modelling in Underground Hard Rock Mines." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0739.

Full text

Abstract:

ABSTRACT Geological discontinuities have a large impact on the rock mass behavior in underground excavations. Under low stress conditions, structurally controlled wedge failure is one of the most critical types of rock instability. The stability analysis, in this case, is essential to consider both the rock mass fracture network and the geometry of the opening. However, current wedge stability analysis tools do not typically examine the detailed geometrical characteristics of the rock discontinuities and the excavation shape in 3D. This paper reports on the development of a comprehensive and more rational numerical approach to assess wedge formation around underground mine openings. The approach considers the structural rock mass complexity using Discrete Fracture Network (DFN) modelling and the detailed 3D underground excavation profile obtained from surveying. The developed methodology was successfully applied to estimate the formation of wedges around an excavation in an underground mine. A detailed investigation on the 3D profile and shape of the excavation indicated that an oversimplification of the excavation geometry in the stability analysis can result in inadequate assessment of wedge formation. Further analysis allowed to identify elongated wedges that may not be critical from a stability perspective and wedges that were not entirely formed in the DFN model but may still be critical for the stability of the excavation. INTRODUCTION Under low-stress conditions, the stability of mining excavations is frequently controlled by rock discontinuities (Hoek et al., 2000). Wedges are formed by the intersection of more than two discontinuities on the walls of an underground opening. The structurally defined rock blocks can fall or slide toward the excavation. The most common wedges in the field are tetrahedral blocks defined by the intersection of three fractures and the surface of the underground opening (Windsor, 1999). Under these conditions, analyzing the size distribution and probability of occurrence of wedges is critical for the design and support of underground excavations.

APA, Harvard, Vancouver, ISO, and other styles

7

Coote, Robert I., and J. Kyle Keith. "Pressure Reductions and Pipeline Excavation." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0395.

Full text

Abstract:

Pipeline companies often reduce the pressure while performing maintenance activities and integrity excavations on in-service pipelines. Despite this practice, pipeline design codes, regulations and industry publications offer little guidance on what factors should be considered to determine how much, if any, the pressure should be reduced from operating levels during excavation activities. Also, it is not commonly understood what level of safety is introduced with these reductions and what historical operating pressure level should be used as the basis for the reductions. A literature survey and an interview process with CEPA member companies summarized common industry practices and determined factors to be considered when assessing if and how much of a pressure reduction is appropriate while excavating an operating energy pipeline.

APA, Harvard, Vancouver, ISO, and other styles

8

Wong, L. W. "Effects of Soil-Structure Interaction on Wall Deflections and Surface Settlements During Deep Excavations." In The HKIE Geotechnical Division 43rd Annual Seminar. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.159.7.

Full text

Abstract:

Ground movements due to excavations may cause damages to structures. While wall deflections could be adequately predicted, accurate estimations of ground movements are usually far from field observations. It has been identified that the behaviour of soil at small strain plays a key role in predicting the surface settlements. Presented herein is a study on a well-documented excavation case history in soft ground located in Taipei Basin. Two-dimensional finite element analyses adopting the hardening soil with small-strain stiffness to simulate the nonlinear stress-strain relationship of soils have been conducted. Various interface reduction factors have been adopted to simulate the soil-structure interaction. The effect of water pressures on the performance of excavations was studied. The analyzed results show that the hardening soil with small-strain stiffness model could reliably predict the wall deflections and the surface settlements simultaneously. The interface reduction factor would be the key parameter for exploring the ground movements due to deep excavations.

APA, Harvard, Vancouver, ISO, and other styles

9

Wong, L. W. "Wall-Soil Interaction Effects on Ground Movements Adjacent to Excavations." In The HKIE Geotechnical Division 42nd Annual Seminar. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.133.41.

Full text

Abstract:

Accurate prediction of ground movements is essential for assessing the potential risk of damaging structures adjacent to deep excavations. Numerous studies have previously been conducted to estimate the magnitudes and the distributions of ground movements. However, the wall-soil interaction effects have not been fully explored. Particularly, the soft toe condition, the effects of vertical loading on walls and the effects of the excavation widths have seldom been discussed. Presented herein is a parametric study conducted to quantify the influence of wall movements on vertical ground movements. A case history of the excavation in soft ground in the Taipei basin is collected for the studies. The excavation was retained by diaphragm walls of 31.5 m in length. Six cases with excavation widths of 11.2 m and 41.2 m with and without soft toes have been analyzed. The non-linear Hardening-Soil with Small Strain constitutive soil model is adopted. The stiffness parameters for the HSS soil model are validated by comparing the results of analyses with the observed ground movements.

APA, Harvard, Vancouver, ISO, and other styles

10

Ghamraoui, Nagham, and Diala Tabbal. "Effect of Deep Excavations on Adjacent Structures and Importance of Deep Excavation Support." In The 6th World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2021. http://dx.doi.org/10.11159/icgre21.lx.110.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Excavations"

1

Ruschau. L51961 Coating Compatibility at Thermite Welds and Keyhole Excavations. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2002. http://dx.doi.org/10.55274/r0010247.

Full text

Abstract:

Patching and repairing high performance pipeline coatings requires a high performance repair material to ensure the integrity of the coating system. The application conditions are not optimized as they are during plant applications, so it is imperative that repair coatings applied to mainline coatings will adhere to all coated surfaces so that resources can be focused on optimizing application methods. Compatibility of repair coatings applied to thermite weld components may be inadequate for optimum field performance. When combined with the limiting factors of keyhole excavations it is important to use coatings which are not only compatible with the thermite welds but also are suitable for the keyhole application procedure. A series of 14 pipeline repair coatings were evaluated for their compatibility with the components of a thermite weld. Chemical compatibility was determined in terms of adhesion with the thermite weld individual components: polyethylene wire insulation, polyvinylchloride wire insulation, copper wire, steel, and copper/aluminum thermite alloy. The same coatings were evaluated for their suitability for application by keyhole excavation procedures. A keyhole excavation was simulated using a scaffold over filled soil boxes (dry soil) containing buried pipe sections, and each of the repair coatings was applied by a commercial keyhole excavation company. The ease of application and general suitability was rated. After backfilling and aging for six months, the samples were removed from the soil boxes and the coatings evaluated.

APA, Harvard, Vancouver, ISO, and other styles

2

Ryan, G. W. ,. Westinghouse Hanford. Excavations in Hanford ponds, cribs, or ditches. Office of Scientific and Technical Information (OSTI), July 1996. http://dx.doi.org/10.2172/657348.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Ryan, G. W. ,. Westinghouse Hanford. Excavations in Hanford ponds, cribs, or ditches. Office of Scientific and Technical Information (OSTI), September 1996. http://dx.doi.org/10.2172/657979.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Stormont, J. C. Discontinuous behavior near excavations in a bedded salt formation. Office of Scientific and Technical Information (OSTI), October 1990. http://dx.doi.org/10.2172/6461949.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Fitzhugh, William W. The Gateways Project 2010: Land Excavations at Hare Harbor, Mecatina. Edited by Lauren Marr. Arctic Studies Center, Smithsonian Institution, 2011. http://dx.doi.org/10.5479/10088/81585.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Kelkar, Sharad M., Philip H. Stauffer, and Bruce Alan Robinson. Mechanical Behavior of the Near-field Host Rock Surrounding Excavations. Office of Scientific and Technical Information (OSTI), January 2015. http://dx.doi.org/10.2172/1167232.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Hilman, Ross G., Cynthia J. Oliver, Peter J. Lund, and John Sharpe. Results of Test Excavations at 32ME588, Mercer County, North Dakota. Fort Belvoir, VA: Defense Technical Information Center, July 1995. http://dx.doi.org/10.21236/ada302373.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Hilman, Ross G., Cynthia J. Oliver, Peter J. Lund, and John Sharpe. Results of Test Excavations at 32DU413, Dunn County, North Dakota. Fort Belvoir, VA: Defense Technical Information Center, July 1995. http://dx.doi.org/10.21236/ada302510.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Stewart. L52283 Ground Positioning Satellite in Conjunctions with Current One-Call System - Virginia. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), November 2007. http://dx.doi.org/10.55274/r0010184.

Full text

Abstract:

Excavation damage continues to be a leading cause of damage to underground facilities. It was cited as the cause in over 15% of all pipeline incidents in 2006. Effective damage prevention programs are necessary to prevent damages to underground facilities and to ensure public health and safety, environmental protection and continuity of vital services. All stakeholders, including the public, share responsibility for and the benefits of damage prevention. Although much has been done to address excavation damage it continues to be a problem. The Virginia Pilot Project for Incorporating GPS Technology to Enhance One-Call Damage Prevention was undertaken as a "proof-of-concept" project to research and implement new and existing technology to significantly enhance the development and communication of accurate information among stakeholders regarding the exact location of planned excavations. Resulting improvements in the one-call damage prevention process would in turn have a positive impact on damage prevention and the safety and reliability of operations of underground facilities.

APA, Harvard, Vancouver, ISO, and other styles

10

MCSHANE DS. SLOPE STABILITY EVALUATION AND EQUIPMENT SETBACK DISTANCES FOR BURIAL GROUND EXCAVATIONS. Office of Scientific and Technical Information (OSTI), March 2010. http://dx.doi.org/10.2172/978603.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!