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Limit Equilibrium And Numerical Modelling Approaches In Slope Stability Analyses With Regard To Risk Assessment For Open Pit Mining
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Book Synopsis Limit Equilibrium and Numerical Modelling Approaches in Slope Stability Analyses with Regard to Risk Assessment for Open Pit Mining by : Mpoyi Jacques Kanda
Download or read book Limit Equilibrium and Numerical Modelling Approaches in Slope Stability Analyses with Regard to Risk Assessment for Open Pit Mining written by Mpoyi Jacques Kanda and published by . This book was released on 2015 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparison of the Limit Equilibrium and Numerical Modelling Approaches to Risk Analysis for Open Pit Mine Slopes by : Henry Tonderai Chiwaye
Download or read book A Comparison of the Limit Equilibrium and Numerical Modelling Approaches to Risk Analysis for Open Pit Mine Slopes written by Henry Tonderai Chiwaye and published by . This book was released on 2010 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Open Pit Slope Design by : John Read
Download or read book Guidelines for Open Pit Slope Design written by John Read and published by CSIRO PUBLISHING. This book was released on 2009-11-09 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis A Probabilistic-based Approach to Rock Slope Stability Analysis in Open-pit Mine Using Numerical Modelling by : Nyamabo Lewis Mathe
Download or read book A Probabilistic-based Approach to Rock Slope Stability Analysis in Open-pit Mine Using Numerical Modelling written by Nyamabo Lewis Mathe and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Slope Stability 2007 by : Yves Potvin
Download or read book Slope Stability 2007 written by Yves Potvin and published by . This book was released on 2007 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Rocscience International Conference 2023 (RIC2023) by : Reginald E. Hammah
Download or read book Proceedings of the Rocscience International Conference 2023 (RIC2023) written by Reginald E. Hammah and published by Springer Nature. This book was released on 2023-12-08 with total page 879 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an open access book. Rocscience is delighted to announce the Rocscience International Conference 2023 (RIC2023), an in-person gathering to be held from April 24–26, 2023, in Toronto, Canada. RIC2023's primary objective is to bring geotechnical professionals together to meet and exchange ideas on important issues and developments in geotechnical engineering, particularly combinations of emerging and mature technologies. The geotechnical industry is rapidly evolving. Engineers are more connected through technology, technology is becoming more integrated than ever, and methods combining these technologies are becoming more prevalent. This movement towards combining technologies led us to the conference theme, “Synergy in Geotechnical Engineering – Success Beyond Individual Technologies.” We believe the time is right to highlight how far the industry has come with various technologies and continues to develop. The conference aims to create an environment that fosters new perspectives and helps attendees delve deeper into innovative approaches. During RIC2023, Rocscience will award the 2023 Lifetime Achievement Medal to Dr. Norbert Morgenstern, an internationally recognized authority in the engineering community. As both a practitioner and educator, Dr. Morgenstern’s contributions to the geotechnical community continue to benefit engineers worldwide, and he will give an address on his career. In addition to keynotes by Dr. Morgernstern and four other distinguished speakers, there will be several technical and networking sessions.
Book Synopsis Guidelines for Open Pit Slope Design in Weak Rocks by : Derek Martin
Download or read book Guidelines for Open Pit Slope Design in Weak Rocks written by Derek Martin and published by CSIRO PUBLISHING. This book was released on 2018-01-10 with total page 791 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Two- and Three-dimensional Slope Stability Analyses of Open Pit Mines Under Geomechanical Uncertainty and Rock Mass Properties Variability by : Christian Obregon Mitma
Download or read book Two- and Three-dimensional Slope Stability Analyses of Open Pit Mines Under Geomechanical Uncertainty and Rock Mass Properties Variability written by Christian Obregon Mitma and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "In open pit mining, a major geotechnical challenge involves the excavation of the steepest possible slope angle to achieve the lowest stripping ratio while ensuring maximum ore recovery. This generally means a good overall profitability since waste rock removal is kept to a minimum. However, steepening pit slopes may induce failures, which may disprove the economic benefits that were initially aimed at and which may also result in loss of life, damage to equipment and environment. As a result, the selection of slope angle is a critical decision that can have far-reaching effects on the economics and operation of the mining project Traditionally, slope stability assessments for pit slopes are carried out by means of a 2D deterministic analysis. However, there are two major drawbacks with this approach. First, a deterministic approach is unable to account for the variability and uncertainty in the rock mass strength properties. Second, a two-dimensional analysis cannot capture the complex open pit geology and varying geometry which is inherently 3D in character.This work deals with the geotechnical slope design of three open pit case studies by means of a probabilistic-based approach in order account for the variability and uncertainty in the properties corresponding to both the intact rock and geological discontinuities. Rock slope stability assessments are carried out at three different scales: bench, inter-ramp and global pit slope by means of analytical and numerical tools. Both kinematic and kinetic analysis for structurally controlled failure mechanisms were carried out at the bench scale by means of classical Limit Equilibrium Analysis (LEA). Also, a novel Discrete Fracture Network (DFN) modelling technique was used for the stochastic representation of discrete rock blocks. Slope stability analysis at the inter-ramp slope was performed through a deterministic approach of major large-scale discontinuities mapped during field geological characterization. The global pit slope stability analysis focused on investigating the uncertainty in intact rock and rock mass Hoek-Brown shear strength envelopes and was conducted using 2D/3D Limit Equilibrium Analysis (LEA) vs Finite Element Analysis (FEA). Finally, deterministic vs probabilistic, LEA vs FEA and 2D vs 3D slope stability analysis tools are compared, and their results are discussed"--
Book Synopsis Slope Stability Analysis by the Limit Equilibrium Method by : Yang Hsien Huang
Download or read book Slope Stability Analysis by the Limit Equilibrium Method written by Yang Hsien Huang and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yang H. Huang presents fundamental principles and methods for using the limit equilibrium method in analyzing slope stability for the safe design of earth slopes.
Book Synopsis Proceedings of the TMIC 2022 Slope Stability Conference (TMIC 2022) by : Sina Javankhoshdel
Download or read book Proceedings of the TMIC 2022 Slope Stability Conference (TMIC 2022) written by Sina Javankhoshdel and published by Springer Nature. This book was released on 2023-04-02 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an open access book.TVSeminars is an online platform for virtual interactive presentations in the mining and geotechnical field. With audiences from over 58 countries around the world, TVSeminars aims to provide access to high quality seminars for all professionals.
Book Synopsis Failure Mechanism and Stability Analysis of Rock Slope by : Ke Zhang
Download or read book Failure Mechanism and Stability Analysis of Rock Slope written by Ke Zhang and published by Springer Nature. This book was released on 2020-07-02 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents in-depth coverage of laboratory experiments, theories, modeling techniques, and practices for the analysis and design of rock slopes in complex geological settings. It addresses new concepts in connection with the kinematical element method, discontinuity kinematical element method, integrated karst cave stochastic model-limit equilibrium method, improved strength reduction method, and fracture mechanics method, taking into account the relevant geological features. The book is chiefly intended as a reference guide for geotechnical engineering and engineering geology professionals, and as a textbook for related graduate courses.
Book Synopsis Three Dimensional Slope Stability Analysis of Open Pit Mine by : Masagus Ahmad Azizi
Download or read book Three Dimensional Slope Stability Analysis of Open Pit Mine written by Masagus Ahmad Azizi and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3-dimensional slope stability analysis has been developing rapidly since the last decade, and currently a number of geomechanical researchers in the world have put forward ideas for optimization of slope design related to the economics and safety of mining operations. The 3-dimensional slope stability analysis methods has answered the assumption of spatial parameters in determining safety factors and the failure probability, thus the volume of failed material and the location of the most critical slopes can be determined. This chapter discusses two methods of 3-dimensional slope stability analysis, namely the limit equilibrium method (LEM) and finite element method (FEM). LEM 3D requires an assumption of failure type with the variable of analysis are the maximum number of columns, the amount of grid points, increment radius, and type of slip surface. On the other hand, FEM 3D requires an assumption of convergence type, absolute force and energy, with the variable of analysis are mesh type and maximum number of iterations. LEM 3D shows that the cuckoo algorithm is reliable in obtaining position and shape of slip surface. Meanwhile FEM 3D, the optimum iteration number needs to be considered to improve analysis efficiency and preserving accuracy.
Book Synopsis Guidelines for Evaluating Water in Pit Slope Stability by : Geoff Beale
Download or read book Guidelines for Evaluating Water in Pit Slope Stability written by Geoff Beale and published by CSIRO PUBLISHING. This book was released on 2013-12-17 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Numerical Methods for Reliability and Safety Assessment by : Seifedine Kadry
Download or read book Numerical Methods for Reliability and Safety Assessment written by Seifedine Kadry and published by Springer. This book was released on 2014-09-30 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers unique insight on structural safety and reliability by combining computational methods that address multiphysics problems, involving multiple equations describing different physical phenomena and multiscale problems, involving discrete sub-problems that together describe important aspects of a system at multiple scales. The book examines a range of engineering domains and problems using dynamic analysis, nonlinear methods, error estimation, finite element analysis and other computational techniques. This book also: · Introduces novel numerical methods · Illustrates new practical applications · Examines recent engineering applications · Presents up-to-date theoretical results · Offers perspective relevant to a wide audience, including teaching faculty/graduate students, researchers and practicing engineers.
Book Synopsis Analysis of Slope Stability Using Limit Equilibrium and Numerical Methods with Case Examples from the Águas Claras Mine, Brazil by :
Download or read book Analysis of Slope Stability Using Limit Equilibrium and Numerical Methods with Case Examples from the Águas Claras Mine, Brazil written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rock Slope Engineering by : Duncan C. Wyllie
Download or read book Rock Slope Engineering written by Duncan C. Wyllie and published by CRC Press. This book was released on 2017-09-18 with total page 803 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Slope Engineering covers the investigation, design, excavation and remediation of man-made rock cuts and natural slopes, primarily for civil engineering applications. It presents design information on structural geology, shear strength of rock and ground water, including weathered rock. Slope design methods are discussed for planar, wedge, circular and toppling failures, including seismic design and numerical analysis. Information is also provided on blasting, slope stabilization, movement monitoring and civil engineering applications. This fifth edition has been extensively up-dated, with new chapters on weathered rock, including shear strength in relation to weathering grades, and seismic design of rock slopes for pseudo-static stability and Newmark displacement. It now includes the use of remote sensing techniques such as LiDAR to monitor slope movement and collect structural geology data. The chapter on numerical analysis has been revised with emphasis on civil applications. The book is written for practitioners working in the fields of transportation, energy and industrial development, and undergraduate and graduate level courses in geological engineering.
Book Synopsis Rock Slope Stability Investigations In Three Dimensions For A Part Of An Open Pit Mine In USA. by : Biao Shu
Download or read book Rock Slope Stability Investigations In Three Dimensions For A Part Of An Open Pit Mine In USA. written by Biao Shu and published by . This book was released on 2014 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional slope stability analysis and design methods, such as limit equilibrium method and continuum numerical methods have limitations in investigating three dimensional large scale rock slope stability problems in open pit mines associated with stress concentrations and deformations arising due to intersection of many complex major discontinuity structures and irregular topographies. Analytical methods are limited to investigating kinematics and limit equilibrium conditions based on rigid body analyses. Continuum numerical methods fail to simulate the detachment of rock blocks and large displacements and rotations. Therefore, there is an urgent need to try some new methods to have a deeper understanding of the open pit mine rock slope stability problems. The intact rock properties and discontinuity properties for both DRC and DP rock formations that exist in the selected open pit mine were determined from tests conducted on rock samples collected from the mine site. Special survey equipment (Professor Kulatilake owns) which has a total station, laser scanner and a camera was used to perform remote fracture mapping in the research area selected at the mine site. From remote fracture mapping data, the fracture orientation, spacing and density were calculated in a much refined way in this dissertation compared to what exist in the literature. Discontinuity orientation distributions obtained through remote fracture mapping agreed very well with the results of manual fracture mapping conducted by the mining company. This is an important achievement in this dissertation compared to what exist in the literature. GSI rock quality system and Hoek-Brown failure criteria were used to estimate the rock mass properties combining the fracture mapping results with laboratory test results of intact rock samples. Fault properties and the DRC-DP contact properties were estimated based on the laboratory discontinuity test results. A geological model was built in a 3DEC model including all the major faults, DRC-DP contact, and two stages of rock excavation. The built major discontinuity system of 44 faults in 3DEC with their real orientations, locations and three dimensional extensions were validated successfully using the fault geometry data provided by the mining company using seven cross sections. This was a major accomplishment in this dissertation because it was done for the first time in the world. Numerical modeling was conducted to study the effect of boundary conditions, fault system and lateral stress ratio on the stability of the considered rock slope. For the considered section of the rock slope, the displacements obtained through stress boundary conditions were seemed more realistic than that obtained through zero velocity boundary conditions (on all four lateral faces). The fault system was found to play an important role with respect to rock slope stability. Stable deformation distributions were obtained for k0 in the range of 0.4 to 0.7. Because the studied rock mass is quite stable, it seems that an appropriate range for k0 for this rock mass is between 0.4 and 0.7. Seven monitoring points were selected from the deformation monitoring conducted at the open pit mine site by the mining company using a robotic total station to compare with numerical predictions. The displacements occurred between July 2011 and July 2012 due to the nearby rock mass excavation that took place during the same period were compared between the field monitoring results and the predicted numerical modeling results; a good agreement was obtained. This is a huge success in this dissertation because such a comparison was done for the first time in the world. In overall, the successful simulation of the rock excavation during a certain time period indicated the possibility of using the procedure developed in this dissertation to investigate rock slope stability with respect to expected future rock excavations in mine planning.
