Gotowe bibliografie tematyczne / Large scale open pit slope

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Gotowa bibliografia na temat „Large scale open pit slope”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 2 lutego 2022

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Artykuły w czasopismach na temat "Large scale open pit slope"

Bazarnik, Miroslawa. "Slope stability monitoring in open pit mines using 3D terrestrial laser scanning". E3S Web of Conferences 66 (2018): 01020. http://dx.doi.org/10.1051/e3sconf/20186601020.

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In open pit mines the aspect of preventing and forecasting the threat of landslides and rock falls is crucial issue because of the significant consequences that instabilities may have. Systematic slope stability monitoring is necessary to ensure safe and continuous mining operations. The development of innovative technologies, such as 3D laser scanning, opens up new possibilities, especially in the case of large and hard-to-reach areas, such as open pit mines. Terrestrial laser scanners (TLS) provide fast, efficient, detailed, and accurate three-dimensional data. The article discusses the use of 3D terrestrial laser scanning method to monitor slope displacements and landslides in open pit mines. The first part of the article discusses the risk scale of gravitational displacement on the slopes, on examples of Polish open pit mines, and introduces the most common slope monitoring methods. Then, the principles of 3D terrestrial laser scanning were defined, and some examples of TLS applications in the open pit mines were presented.

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Azzuhry, Yahdi. "STABILITY ANALYSIS AND FAILURE MECHANISMS OF OPEN PIT ROCK SLOPE". Journal of the Civil Engineering Forum 2, nr 3 (16.08.2017): 255. http://dx.doi.org/10.22146/jcef.26589.

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Rock mass in nature tend to be unideal, for it is heterogeneous, anisotropic and has discontinuity. The discontinuity makes anisotropic strength and stress in the rock mass, and also controls the changing of the elastic properties of rock mass. This condition results to disruptions in the rock mass strength balance, and finally drives the slopes to collapse. This study aims to determine the slope failure mechanisms in the area of case study, as well as its variations based on the Rock Mass Rating (RMR), Geological Strength Index (GSI), Slope Mass Rating (SMR), kinematic analysis, numerical analysis and monitoring approach slope movement in a coal mine slope applications. The site investigations were implemented to obtain information about slope collapse. Prior to the collapse, the slope inclination was 38° with of 94 meters height, strike slope of N 245 E and direction of slope surface of 335°. After the collapse, the slope was became 25º; and after the collapse materials were cleared, it was 35º. The discontinuity mapping obtained 5 sets of discontinuities, and the data were developed to obtain the value of RMR. The result of piezometer measurements was that at occurrence of collapse, slope elevation was 44.40m. Displacement value from monitoring SSMR showed that when the slope was collapsing in two stages, the first stage value was 70.61cm (a more critical condition, the value was rounded down to 70cm to the implementation in modelling) and the second stage value was at 124.25cm. The value of RMR89 in this study was greater than the value of GSI and SMR. As for the average value, it was obtained 34.67 for RMR89 value and 29.67 for GSI value, these rocks then can be classified into Poor Rock class number IV. The result of kinematic analysis found that sliding planar failure at dips 36°, and wedge failure at dips 36°, 35° and 34°. Acquisition SMR value obtained at 25, 27, 28 and 29. The SMR values classified the rock mass quality into class number IV, the description of the rock mass was relatively poor, the slope stability was low or unstable and the collapse manifold was planar or wedge failure. The result from the analysis of the model with its criteria obtained was that un-collapse conditions at angle 29°. It is recommended to use 29° angle to repair the slopes, and also recommended for overall high wall slope angle. Type of collapse that occurred on the slope failure mechanisms in all of the analysis that has been done, it is known that the mechanisms involved are complex types (combine of wedge failure, planar failure, and step-path failure) or classified into large scale rock slope failure surface.

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Wang, Shuhong, Chengjin Zhu, Pengyu Wang i Zishan Zhang. "Stability Analysis of Slope with Multiple Sliding Surfaces Based on Dynamic Strength-Reduction DDA Method". Advances in Civil Engineering 2019 (11.11.2019): 1–12. http://dx.doi.org/10.1155/2019/2183732.

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The present study aims to elucidate the problem of a rock mass structural plane with a range of damage degrees and the numerical model selection for analysis of a slope with multiple sliding surfaces. Based on the relative displacement between blocks, the dynamic strength reduction-discontinuous deformation analysis (hereinafter referred to as DSR-DDA) method is proposed for studying slopes with multiple sliding surfaces. The slope-slider classic case was used to test the displacement threshold. The model was applied to the stability analysis of multiple sliding surfaces of a high rock slope in the Fushun West Open-Pit Mine. The results show that when the displacement threshold is set to 1 mm, the error between the DSR-DDA results and the theoretical solution is within 0.5%, which satisfies the calculation requirements. The most dangerous slip surface in the Fushun West Open-Pit Mine slope was identified. Based on the numerical slope model after the first landslide, the position of the secondary slip surface was then identified. The failure mode is traction sliding failure, and the middle and lower oil shales play a key role in the slope stability. This study recommends that mining of the remaining oil shale should stop to avoid causing large-scale landslides in the upper part of the slope and landslides at the pit-city boundary.

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Cała, Marek, Katarzyna Cyran, Joanna Jakóbczyk i Michał Kowalski. "The Challenges of Open-Pit Mining in the Vicinity of the Salt Dome (Bełchatów Lignite Deposit, Poland)". Energies 13, nr 8 (14.04.2020): 1913. http://dx.doi.org/10.3390/en13081913.

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The extraction of the Bełchatów lignite deposit located in the vicinity of the Dębina salt dome requires careful planning that considers the influence of mining projects on the slope and salt dome stability conditions. The instability problem is directly related to horizontal and vertical displacement, as well as the complex geological and mining conditions. These conditions are very unique with regard to the co-occurrence of the salt dome and lignite deposits in the same area, as well as the large scale of the pit wall slope. Thus, predicting rock mass behavior and ensuring the safety of mining operations are important issues. The presented analysis focused on the influence of long-term lignite extraction on the western pit wall slope of the Bełchatów field and the salt dome’s stability conditions. This study offers a comprehensive approach to a complex geotechnical problem defined by large-scale, complex geometry, and geological conditions. The rock mass behavior and stress conditions are simulated in numerical modelling. The results of the presented analysis will be useful not only for present mining activities but also for future developments related to post-mining and recultivation plans.

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Tao, Zhigang, Kuiming Liu, Xuebin Cui, Xiaobing Qiao i Xiaoming Sun. "Infrared Temperature Law and Deformation Monitoring of Layered Bedding Rock Slope under Static Load". Advances in Civil Engineering 2020 (19.12.2020): 1–16. http://dx.doi.org/10.1155/2020/8818278.

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China is a mountainous and hilly country with frequent large-scale landslides with complicated mechanisms and serious damage. The layered rock slopes have the worst stability, undergo the most serious damage, and have been rarely investigated due to limitations of measurement methods and instruments. Taking the Nanfen open-pit iron mine as an example, a physical large-model similarity ratio test system is used to simulate the landslide remote monitoring process. The development of the sliding surface, stress-strain characteristics, and infrared law of the bedded rock slope are analyzed. Results show that the anchor cable with constant resistance and large deformation plays a significant role in the stability of the slope, and its maximum slip force is 420 N and 630 N, respectively. Slip and crack are the main mechanisms of energy release in layered rock slope. Some scheme improvement measures for this kind of test are put forward, which provides basis and optimization scheme for the subsequent study of layered rock slope.

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Chunuev, I. K., Yu M. Levkin i Zh Bolotbekov. "Determination of bench, dump and road sliding wedge technological parameters". Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 6, nr 1 (6.04.2021): 31–41. http://dx.doi.org/10.17073/2500-0632-2021-1-31-41.

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Mine surveying in mining operations is of particular importance, since all technological processes of the full life cycle of a mining enterprise and, ultimately, its competitiveness depend on the surveying quality, efficiency and reliability. Organizations independently determine the structure of mine surveying services, taking into account the methods applied and the scale of mining. To ensure safe open-pit mining of minerals, it is necessary to permanently assess and monitor the pit bench and wall rock mass condition. Misjudgement of rock physical and mechanical properties, non-observance of the minerals mining and transportation process cycle, changes in climatic conditions and other problems lead to loss of stability of rocks in all parts of an open pit, including in the areas of ore production and mining and transport equipment operation. The existing practice shows that the effectiveness of an open pit wall and bench stability calculation can be achieved using a technique that should take into account the slope deformation and failure mechanism, as well as the nature of the stress-strain state of the open pit rock mass. The studies presented in the paper are based on comparative analysis of the sliding wedge parameters for benches, dumps and roads at open pits using analytical and graphical software packages, and taking into account the static load produced by dump trucks. The study findings allow to establish that: determination of the bench slope stability and the sliding wedge width, performed by the analytical method, gives higher accuracy results than those obtained by the graphical method; the bench slope stability and the sliding wedge width depend not only on the rock physical and mechanical condition, but also on the bench height, the dump truck (plus its freight load) weight per 1 linear meter of the placement area, the distance from the slope edge and other factors; the rock mass is stable and not subject to landslide phenomena for as long as the sum of the holding forces is greater than or equal to the sum of the shearing forces; when using large-sized transport equipment of nonstandard weight in open-pit mining, it is necessary to calculate the safe width of the sliding wedges, taking into account the loads on them (per 1 linear meter), the values of which can be 1.5–2.0 times higher than those calculated for the circular-cylindrical sliding surface.

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Long, Nguyen, Le Thi Thu Ha, Tong Si Son i Kim Thi Thu Huong. "UAV PHOTOGRAMMETRY-BASED FOR OPEN PIT COAL MINE LARGE SCALE MAPPING, CASE STUDIES IN CAM PHA CITY, VIETNAM". Sustainable Development of Mountain Territories 12, nr 4 (30.12.2020): 501–9. http://dx.doi.org/10.21177/1998-4502-2020-12-4-501-509.

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The use of lightweight Unmanned Aerial Vehicle with the aerial photogrammetry approach to construct the Digital Surface Model (DSM) has been effectively applied for various types of topography. However, the ability to carry out this approach for huge active open coal mines is insufficiently investigated, furthermore, the influences of topographical factors on the accuracy of DSM are ambiguous. This experiment attempts to apply the UAV method for the two active coal mines with the total area of 7.99 km2 , exploited at a range from -300 m to 300 m altitude to figure out the effect of topographic factors on the accuracy of DEM constructed from UAV images. A total of 972 UAV images and 17 ground control points have been coupled to construct DSM of the mines. Besides, 16 checking points located at different elevations are used to evaluate the accuracy of DEM and to define the influence. DEMs are generated with the maximum RMSE of 0.086 m, 0.099 m, and 0.170 m corresponding to X, Y, and Z dimensional errors. The results show the unclear correlation between the vertical accuracy of DEM and the relative elevation (R2=0.064), the general slope of the mines, and the number of ground control points using in the coal mines as well.

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Yang, Guoxiang, Anthony K. Leung, Nengxiong Xu, Kunxiang Zhang i Kunpeng Gao. "Three-Dimensional Physical and Numerical Modelling of Fracturing and Deformation Behaviour of Mining-Induced Rock Slopes". Applied Sciences 9, nr 7 (31.03.2019): 1360. http://dx.doi.org/10.3390/app9071360.

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Fracturing behaviour of jointed rock mass subjected to mining can significantly affect the stability of the rock structures and rock slopes. Ore mining within an open-pit final slope would lead to large-scale strata and surface movement of the rock slope. Rock mass structure, or more specifically, the strength, spacing and distribution of rock joints, are the controlling factors that govern the failure and deformation mechanisms of the final slope. Two-dimensional (2-D) physical modelling tests have been conducted in the literature, but in general, most of them have simplified the geological conditions and neglected some key features of rock mass structure in the field. In this study, new three-dimensional (3-D) physical modelling methods are introduced, with realistic modelling of mechanical behaviour of rock mass as well as identified properties of predominant rock joint sets. A case study of Yanqianshan iron mine is considered and the corresponding 1:200 model rock slope was created for studying the rock joint effects on the strata movement and the subsidence mechanism of the slope. The physical model test results are subsequently verified with 3-D discrete element numerical modelling. Due to the presence of the predominant joints, the observed well-shaped strata subsidence in Yanqianshan iron mine was successfully reproduced in the 3-D physical model. The failure mechanism of rock slopes differs from the trumpet-shaped subsidence observed in unconsolidated soil. Due to the formation of an arching mechanism within the rock mass, the strata deformation transferred gradually from the roof of the goaf to the slope surface.

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Wang, Zhenwei, Gaofeng Song i Kuo Ding. "Study on the Ground Movement in an Open-Pit Mine in the Case of Combined Surface and Underground Mining". Advances in Materials Science and Engineering 2020 (9.06.2020): 1–13. http://dx.doi.org/10.1155/2020/8728653.

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The combined surface and underground mining method is typically used in an open-pit mine for better production and profits. However, the improved scale of mining operations at the combined mining conditions results in even more intensive strata movement and massive ground damages. This paper assesses the progressive development of the characteristics of roof movement with the longwall face advance and its influence on the ground movement at the slope area using physical models. The identification of strata zones at the combined mining conditions is also included. The results show the following: (1) the failure of the competent strong roof creates an inverse arch-shaped rock block structure, which compacts the loose rock fragments in the caved zone; (2) a bed separation occurs above the inverse structure at the top of the disturbed strata configuration and extends upward with the face advance until it approaches the continuous bending zone; (3) more intensive strata movement and ground damages are produced by the large-scale multiseam mining operations, while regular and more distinct strata zones in the disturbed configuration are identified for less intensive single-seam mining; and (4) the intensive and massive underground mining activities increase the slope strata movement at the surface mining side. This research suggests that a less intensive mining activity is preferred in the combined surface and underground mining conditions from the point of view of ground control.

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Huang, Gang-Hai, Yu-Yong Jiao, Xiu-Li Zhang, Amoussou-Coffi Adoko i Shu-Cai Li. "Generating Irregular Models for 3D Spherical-Particle-Based Numerical Methods". Journal of Applied Mathematics 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/302680.

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The realistic representation of an irregular geological body is essential to the construction of a particle simulation model. A three-dimensional (3D) sphere generator for an irregular model (SGIM), which is based on the platform of Microsoft Foundation Classes (MFC) in VC++, is developed to accurately simulate the inherent discontinuities in geological bodies. OpenGL is employed to visualize the modeling in the SGIM. Three key functions, namely, the basic-model-setup function, the excavating function, and the cutting function, are implemented. An open-pit slope is simulated using the proposed model. The results demonstrate that an extremely irregular 3D model of a geological body can be generated using the SGIM and that various types of discontinuities can be inserted to cut the model. The data structure of the model that is generated by the SGIM is versatile and can be easily modified to match various numerical calculation tools. This can be helpful in the application of particle simulation methods to large-scale geoengineering projects.

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Rozprawy doktorskie na temat "Large scale open pit slope"

Franz, Juergen Mining Engineering Faculty of Engineering UNSW. "An investigation of combined failure mechanisms in large scale open pit slopes". Publisher:University of New South Wales. Mining Engineering, 2009. http://handle.unsw.edu.au/1959.4/43368.

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Failure mechanisms in large scale open pit slopes are more complex than could be considered through conventional slope design methods. Pit slope behaviour must be predicted accurately, because for very deep open pits, a small change of slope angle can have serious technical and economic consequences. Failure of hard rock slopes often involves both failure along naturally existing weakness planes and failure of intact rock. Without an advanced understanding of combined rock slope failure mechanisms, the validity of commonly applied methods of large scale slope analysis is questionable. The problem was investigated by means of a toolbox approach, in which a wide range of slope stability analysis methods were used and compared to address specific problems arising during slope design optimisation of the Cadia Hill Open Pit, NSW. In particular, numerical modelling is an advanced tool to obtain insight into potential failure mechanisms and to assist the slope design process. The distinct element method was employed to simulate complex rock slope failure, including fracture extension, progressive step-path failure and brittle failure propagation, which were previously often considered unimportant or too difficult to model. A new, failure-scale-dependent concept for the categorisation of slope failures with six categories ranging from 0 (stable) to 5 (overall slope failure) was suggested to assist risk-based slope design. Parametric slope modelling was conducted to determine the interrelationship between proposed categories and critical slope/discontinuity parameters. Initiation and progression of complex slope failure were simulated and described, which resulted in an advanced understanding of combined slope failure mechanisms and the important role of rock bridges in large scale slope stability. A graphical presentation of the suggested slope failure categories demonstrated their interrelationship to varied slope/discontinuity parameters. Although large scale slope analyses will always involve data-limited systems, this investigation shows that comprehensive, conceptual modelling of slope failure mechanisms can deliver a significantly improved insight into slope behaviour, so that associated slope failure risks can be judged with more confidence. The consideration of combined slope failure mechanisms in the analysis of large scale open pit slopes is essential if slope behaviour is to be realistically modelled.

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Puell, Ortiz Jorge. "Methodology for a dump design optimization in large-scale open pit mines". TAYLOR & FRANCIS AS, 2017. http://hdl.handle.net/10150/626612.

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Modern large-scale open pit mines move hundreds of thousands of tonnes of material daily, from the loading sources to the destination zones, whether these are massive mine dumps or, to a lesser extent, to the grinding mills. Mine dumps can be classified as leach or waste dumps, depending upon their economic viability to be processed in-place, a condition that has experienced great progress in the last decades and has reconfigured the open pit haulage network with an increase in the number of dumps. Therefore, new methods for dump design optimization are of the highest priority in mine planning management. This paper presents a methodology to model and optimize the design of a dump by minimizing the total haulage costs. The location and design of these dumps will be given mainly by the geological characteristics of the mineral, tonnage delivered, topographical conditions, infrastructure capital and transportation costs. Spatial and physical design possibilities, in addition, provide a set of parameters of mathematical and economic relationship that creates opportunities for modelling and thus facilitates the measurement and optimization of ultimate dump designs. The proposed methodology consists of: (1) Formulation of a dump model based on a system of equations relying on multiple relevant parameters; (2) Solves by minimizing the total cost using linear programming and determines a "preliminary" dump design; (3) Through a series of iterations, changes the "preliminary" footprint by projecting it to the topography and creates the ultimate dump design. Finally, an application for a waste rock dump illustrates this methodology.

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Cizek, Petr. "Visualising the industrial north : exploring new ways to engage and inform the public on the physical footprint and scale of very large resource extraction projects such as the Alberta tar sands open pit mines and associated pipelines". Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50166.

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Using the Alberta tar sands open pit mines and associated pipelines as a case study, the effectiveness of maps and landscape visualisation displayed within virtual globes in informing public perception of large-scale landscape disturbance and associated impacts is evaluated. While controversy swirls around the tar sands, this proposed “gigaproject” has never been assessed, mapped, or visualised in its totality. Comprehensive mapping and landscape visualisation of this “gigaproject” may be essential for the public and practitioners to understand, debate, and discuss the full scope and scale of this “gigaproject”. Focus groups with a total of 32 members of the general public were conducted in Vancouver and Edmonton. In a typical computer lab setting, participants viewed a Google Earth project showing the cumulative development of the scale and physical footprint of tar sands open pit mines on individual computers. Participants completed an initial and follow up questionnaire as well as engaged in discussion and presentations that were facilitated by the researcher. Based on the results of the focus group study, after viewing using interactive multi-scale media, participants experienced significant learning; perceived the geographic area of the projects as larger than before viewing; in some cases over-estimated the spatial extent and growth of the projects; became significantly more opposed to future projects but not to existing projects; and expressed emotional reactions due to disclosure of key aspects of the project enhanced by the benefits of the display medium. Significantly more participants found 2D maps to be more believable than 3D visualisations. Most participants found interacting with Google Earth virtual globes to be useful in displaying the tar sands project. Major implications of this study are that using virtual globes, such as Google Earth, that allow for seamless transition between multiple scales to visualize very large but poorly understood projects, can increase people's awareness of scale and other environmental implications and may affect peoples’ perception and opinion of those projects negatively. The study suggests that visualization of large irregular disturbances may lead to some overestimation of actual spatial extent, but this does not appear to be related to the negativity of opinions.
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Książki na temat "Large scale open pit slope"

Read, John, i Peter Stacey. Guidelines for Open Pit Slope Design. CSIRO Publishing, 2009. http://dx.doi.org/10.1071/9780643101104.

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Guidelines for Open Pit Slope Design is a comprehensive account of the open pit slope design process. Created as an outcome of the Large Open Pit (LOP) project, an international research and technology transfer project on rock slope stability in open pit mines, this book provides an up-to-date compendium of knowledge of the slope design processes that should be followed and the tools that are available to aid slope design practitioners. This book links innovative mining geomechanics research into the strength of closely jointed rock masses with the most recent advances in numerical modelling, creating more effective ways for predicting rock slope stability and reliability in open pit mines. It sets out the key elements of slope design, the required levels of effort and the acceptance criteria that are needed to satisfy best practice with respect to pit slope investigation, design, implementation and performance monitoring. Guidelines for Open Pit Slope Design comprises 14 chapters that directly follow the life of mine sequence from project commencement through to closure. It includes: information on gathering all of the field data that is required to create a 3D model of the geotechnical conditions at a mine site; how data is collated and used to design the walls of the open pit; how the design is implemented; up-to-date procedures for wall control and performance assessment, including limits blasting, scaling, slope support and slope monitoring; and how formal risk management procedures can be applied to each stage of the process. This book will assist in meeting stakeholder requirements for pit slopes that are stable, in regards to safety, ore recovery and financial return, for the required life of the mine.

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Martin, Derek, i Peter Stacey, red. Guidelines for Open Pit Slope Design in Weak Rocks. CSIRO Publishing, 2018. http://dx.doi.org/10.1071/9781486303489.

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Weak rocks encountered in open pit mines cover a wide variety of materials, with properties ranging between soil and rock. As such, they can provide a significant challenge for the slope designer. For these materials, the mass strength can be the primary control in the design of the pit slopes, although structures can also play an important role. Because of the typically weak nature of the materials, groundwater and surface water can also have a controlling influence on stability. Guidelines for Open Pit Slope Design in Weak Rocks is a companion to Guidelines for Open Pit Slope Design, which was published in 2009 and dealt primarily with strong rocks. Both books were commissioned under the Large Open Pit (LOP) project, which is sponsored by major mining companies. These books provide summaries of the current state of practice for the design, implementation and assessment of slopes in open pits, with a view to meeting the requirements of safety, as well as the recovery of anticipated ore reserves. This book, which follows the general cycle of the slope design process for open pits, contains 12 chapters. These chapters were compiled and written by industry experts and contain a large number of case histories. The initial chapters address field data collection, the critical aspects of determining the strength of weak rocks, the role of groundwater in weak rock slope stability and slope design considerations, which can differ somewhat from those applied to strong rock. The subsequent chapters address the principal weak rock types that are encountered in open pit mines, including cemented colluvial sediments, weak sedimentary mudstone rocks, soft coals and chalk, weak limestone, saprolite, soft iron ores and other leached rocks, and hydrothermally altered rocks. A final chapter deals with design implementation aspects, including mine planning, monitoring, surface water control and closure of weak rock slopes. As with the other books in this series, Guidelines for Open Pit Slope Design in Weak Rocks provides guidance to practitioners involved in the design and implementation of open pit slopes, particularly geotechnical engineers, mining engineers, geologists and other personnel working at operating mines.

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Beale, Geoff, i John Read, red. Guidelines for Evaluating Water in Pit Slope Stability. CSIRO Publishing, 2014. http://dx.doi.org/10.1071/9780643108363.

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Guidelines for Evaluating Water in Pit Slope Stability is a comprehensive account of the hydrogeological procedures that should be followed when performing open pit slope stability design studies. Created as an outcome of the Large Open Pit (LOP) project, an international research and technology transfer project on the stability of rock slopes in open pit mines, this book expands on the hydrogeological model chapter in the LOP project's previous book Guidelines for Open Pit Slope Design (Read & Stacey, 2009; CSIRO PUBLISHING). The book comprises six sections which outline the latest technology and best practice procedures for hydrogeological investigations. The sections cover: the framework used to assess the effect of water in slope stability; how water pressures are measured and tested in the field; how a conceptual hydrogeological model is prepared; how water pressures are modelled numerically; how slope depressurisation systems are implemented; and how the performance of a slope depressurisation program is monitored and reconciled with the design. Guidelines for Evaluating Water in Pit Slope Stability offers slope design practitioners a road map that will help them decide how to investigate and treat water pressures in pit slopes. It provides guidance and essential information for mining and civil engineers, geotechnical engineers, engineering geologists and hydrogeologists involved in the investigation, design and construction of stable rock slopes.

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Sharon, Robert, i Erik Eberhardt, red. Guidelines for Slope Performance Monitoring. CSIRO Publishing, 2020. http://dx.doi.org/10.1071/9781486311002.

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Although most mining companies utilise systems for slope monitoring, experience indicates that mining operations continue to be surprised by the occurrence of adverse geotechnical events. A comprehensive and robust performance monitoring system is an essential component of slope management in an open pit mining operation. The development of such a system requires considerable expertise to ensure the monitoring system is effective and reliable. Written by instrumentation experts and geotechnical practitioners, Guidelines for Slope Performance Monitoring is an initiative of the Large Open Pit (LOP) Project and the fifth book in the Guidelines for Open Pit Slope Design series. Its 10 chapters present the process of establishing and operating a slope monitoring system; the fundamentals of pit slope monitoring instrumentation and methods; monitoring system operation; data acquisition, management and analysis; and utilising and communicating monitoring results. The implications of increased automation of mining operations are also discussed, including the future requirements of performance monitoring. Guidelines for Slope Performance Monitoring summarises leading mine industry practice in monitoring system design, implementation, system management, data management and reporting, and provides guidance for engineers, geologists, technicians and others responsible for geotechnical risk management.

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Części książek na temat "Large scale open pit slope"

Li, Y., E. Topal i S. Ramazan. "Optimising the Long Term Mine Landform Progression and Truck Hour Schedule in a Large Scale Open Pit Mine Using Mixed Integer Programming". W Advances in Applied Strategic Mine Planning, 669–86. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69320-0_39.

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Franz, J., i Y. Cai. "Investigation of slope failure mechanisms caused by discontinuous large scale geological structures at the Cadia Hill Open Pit". W Landslides and Engineered Slopes. From the Past to the Future, 1165–71. CRC Press, 2008. http://dx.doi.org/10.1201/9780203885284-c153.

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"Investigation of slope failure mechanisms caused by discontinuous large scale geological structures at the Cadia Hill Open Pit". W Landslides and Engineered Slopes. From the Past to the Future, Two Volumes + CD-ROM, 1209–16. CRC Press, 2008. http://dx.doi.org/10.1201/9780203885284-163.

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H. Altiti, Awwad, Rami O. Alrawashdeh i Hani M. Alnawafleh. "Open Pit Mining". W Mining Techniques - Past, Present and Future. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.92208.

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Open pit mining method is one of the surface mining methods that has a traditional cone-shaped excavation and is usually employed to exploit a near-surface, nonselective and low-grade zones deposits. It often results in high productivity and requires large capital investments, low operating costs, and good safety conditions. The main topics that will be discussed in this chapter will include an introduction into the general features of open pit mining, ore body characteristics and configurations, stripping ratios and stripping overburden methods, mine elements and parameters, open pit operation cycle, pit slope angle, stability of mine slopes, types of highwall failures, mine closure and reclamation, and different variants of surface mining methods including opencast mining, mountainous mining, and artisan mining.

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González-Nicieza, C., M. Álvarez-Fernández, O. Mora i E. Amor-Herrera. "Back analysis and radar interferometry monitoring in a large open pit slope". W Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, 925–30. CRC Press, 2014. http://dx.doi.org/10.1201/b16955-159.

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Ulusay, R., Ö. Aydan i A. Ersen. "Assessment of a complex large slope failure at Kışlaköy open pit mine, Turkey". W 2019 Rock Dynamics Summit, 45–52. CRC Press, 2019. http://dx.doi.org/10.1201/9780429327933-6.

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Lai, Xingping, Pengfei Shan, Jiantao Cao, Hailong Zhu i Feng Cui. "Large-three-dimensional physical simulation experiments on a high and steep slope stability of open-pit mines". W Rock Characterisation, Modelling and Engineering Design Methods, 425–30. CRC Press, 2013. http://dx.doi.org/10.1201/b14917-76.

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Severin, J., E. Eberhardt, L. Leoni i S. Fortin. "Use of ground-based synthetic aperture radar to investigate the complex 3-D kinematics of a large open pit slope". W Harmonising Rock Engineering and the Environment, 1991–96. CRC Press, 2011. http://dx.doi.org/10.1201/b11646-379.

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Mitchell, William A., i Burt P. Kotler. "Species Diversity, Environmental Heterogeneity, and Species Interactions". W Biodiversity in Drylands. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780195139853.003.0009.

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Despite their apparent simplicity, arid environments can be quite heterogeneous. From small-scale variation in substrate and slope to large-scale geographic variation in solar input and productivity, drylands and deserts provide organisms with a tremendous range of ecological challenges (Schmidt-Nielsen 1964, Huggett 1995). Any single species is unable to meet all of these challenges equally well. A species will do better in some environments than others because evolution in heterogeneous environments is constrained by fitness tradeoffs. Such tradeoffs prevent the evolution of a versatile species, competitively superior to all other species across the entire spectrum of heterogeneity (Rosenzweig 1987). Although fitness tradeoffs may hinder species’ evolution in heterogeneous environments, they are a blessing for biodiversity. The source of biodiversity that we address in this chapter is the interplay of heterogeneity, tradeoffs, and density dependence. While we focus on species interactions at the local scale, our presentation includes a model that predicts changes in local diversity as a function of climate. The model’s predictions are based on changes in the nature of competition wrought by changes in productivity levels and climatic regimes. Cast in terms of evolutionary stable strategies (ESSs), the predictions refer to evolutionary as well as ecological patterns. A mechanism of coexistence consists of an axis of environmental heterogeneity together with an axis that indicates a tradeoff in the abilities of species to exploit different parts of the axis. In the absence of some kind of heterogeneity, there is only one environmental type, and whatever species is best adapted to it will competitively exclude others. In the absence of a tradeoff, one species could evolve competitive superiority over the full range of heterogeneity, again resulting in a monomorphic community. Consider some examples of mechanisms of species’ coexistence from dryland communities (Kotler and Brown 1988, Brown et al. 1994). For many taxa, spatial heterogeneity in predation risk is a consequence of the pattern of bushy and open areas common in drylands. In certain rodent communities, some species are able to exploit the relatively riskier open microhabitats by virtue of antipredator morphologies (Kotler 1984).

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Tammemagi, Hans. "Case Histories". W The Waste Crisis. Oxford University Press, 2000. http://dx.doi.org/10.1093/oso/9780195128987.003.0014.

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Theory is fine, but practical experience is the heart of real learning. This chapter provides—as much as a book can—some real-life experience through seven case histories of how wastes are managed. The case histories describe a state-of-the-art materials recycling facility, five waste disposal facilities in three different countries (the United States, Canada, and Sweden), and a large mass-burn incinerator. Choosing which of the many thousands of landfills in existence to include was a difficult task. Three municipal solid waste landfills are described. The first, Fresh Kills landfill in New York City, was constructed in 1948 and represents older landfill technology. The second, a new landfill in East Carbon County, Utah, was built in 1992 and incorporates the latest engineered barriers and features of a modern landfill. The third is being developed in a large, abandoned open-pit mine in California. In addition, we discuss a landfill and treatment center for hazardous waste, located in Swan Hills, Alberta. A unique Swedish facility for disposing radioactive wastes rounds out the suite of landfill case histories; this facility takes a very innovative approach to waste disposal and is included to provide a different perspective on this topic. Materials recovery facilities (MRFs) are the vital heart of modern integrated municipal waste management systems. Without MRFs, recycling on any practical scale would not be possible; it is here that recyclable materials are collected and made ready for sale to secondary markets. One of the most innovative recycle centers in North America has recently been constructed in the city of Guelph in southern Ontario (Guelph, n,d.). It offers good insight into what can be achieved through recycling, and the equipment that is involved. The city of Guelph, with a population of 95,000, is situated about 60 kilometers west of Toronto. In the mid-1980s, the city began studying ways to reduce the amount of waste being placed in its landfill. These studies received a major impetus in 1991, when the province of Ontario developed a waste reduction plan that required municipalities to reduce the amount of garbage being placed in landfills by 50% by the year 2000. A number of pilot studies were conducted before the present approach was selected.

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Streszczenia konferencji na temat "Large scale open pit slope"

Kennedy, Greg, i Davide Casagrande. "Evolution and management of large-scale instability: a case study from Ok Tedi". W 2020 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2020. http://dx.doi.org/10.36487/acg_repo/2025_13.

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Linero-Molina, Sandra, Carolina Palma i Reinaldo Apablaza. "Geotechnical Characterisation of Waste Material in Very High Dumps with Large Scale Triaxial Testing". W 2007 International Symposium on Rock Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2007. http://dx.doi.org/10.36487/acg_repo/708_2.

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Watton, James, i Mark Fowler. "Slope performance monitoring and management of a pit wall experiencing large-scale deformations near Kalgoorlie, Western Australia". W 2020 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2020. http://dx.doi.org/10.36487/acg_repo/2025_58.

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Fietze, Carl, Ashley Creighton, Luiz Castro i Reginald Hammah. "Pit slope design in phyllites for the Simandou large open pit project". W 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1308_01_fietze.

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Pothitos, Frank, i T. Li. "Slope Design Criteria for Large Open Pits - Case Study". W 2007 International Symposium on Rock Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2007. http://dx.doi.org/10.36487/acg_repo/708_21.

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Myburgh, Christie, i Kalyanmoy Deb. "Evolutionary algorithms in large-scale open pit mine scheduling". W the 12th annual conference. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1830483.1830696.

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Damjanac, Branko, Varun Varun i Loren Lorig. "Seismic stability of large open pit slopes and pseudo-static analysis". W 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1308_85_damjanac.

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Lorig, Loren, David Potyondy i Varun Varun. "Quantifying excavation-induced rock mass damage in large open pits". W 2020 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2020. http://dx.doi.org/10.36487/acg_repo/2025_64.

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Dick, Graham, Sam Nunoo, Scott Smith, H. Newcomen, Derek Kinakin, Ian Stilwell i John Danielson. "Monitoring and managing large deformation pit slope instabilities at a British Columbia copper mine". W 2020 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2020. http://dx.doi.org/10.36487/acg_repo/2025_25.

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Deng, Weimin, Ken O’Neill, Ken Luu i Kieron Little. "Geotechnical reliability assessment of a large counterfort retaining wall". W 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1308_37_deng.

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