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Slope Design and Implementation in Open Pit Mines

Slopes of mines and quarries, some of which may reach several hundred meters deep, must be regarded as “geotechnical works” in the sense that we speak of mine works or civil engineering works. Their design and their implementation must be conducted according to rules of art with the general objective to define the geometry that will ensure the safety of the

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PDF) Flooding of a generic salt mine - concept, processes

Examples may be post-closure processes in underground coal mines or groundwater-surface water interactions in open mines.Finally, we have developed an easy-to-use post-processing viewer for KAFKA which greatly facilitates checking intermittent results in the course of calculations and interpreting the final results from complex numerical simulations.Fig. 1

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Geotechnical considerations in underground mines

The Mines Safety and Inspection Regulations 1995 contains regulations in Part 10, Division 2 - General, that apply to the geotechnical considerations that should be adequately considered during the design, operation and abandonment of an underground mine.

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The South African legislative framework for mine closure

A closed mine, where a mine has been granted a closure certificate in terms of section 12 of the Minerals Act, 1991 or in terms of previous legislation Regulation 2.11 Temporary closure (care and maintenance), where the mine is said to be in a state of care and maintenance when it has stopped production for various technical, environmental, financial or labour related reasons,

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Crown Pillar Extraction at Pino Altos Mine - Geomechanical

The project evaluation considered numerous factors influencing mine safety, operations and economics. This case study paper will describe the geomechanical aspects of the project evaluation and execution. 1. INTRODUCTION. The Santo Niño ore body is one of several mineralized zones at Agnico-Eagle Mines’ Pinos Altos property.

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Mining for Closure: Policies and Guidelines for Sustainable

To accommodate the need to close abandoned mines and to ensure that existing and future mines are appropriately closed will require the cooperation of a diverse stakeholder community, new and innovative methods of financing closure and major policy and legislative change in most nations to ensure post-mining sustainable development, Clark et al

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Establishing effective geotechnical processes ... - mine smarter

Establishing effective geotechnical processes for underground mines. Effective mine designs require collaborative efforts between geology, mine planning, mine production, and geotechnical engineering groups. The cycle of design, execution, measurement, and feedback should be continuous. Employing a well-documented and standardized approach is essential to ensuring a coherent, consistent and efficient system.

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Frontiers | An Overview of the Status and Challenges of CO2

Since the Industrial Revolution, anthropogenic carbon dioxide (CO2) emissions have grown exponentially, accumulating in the atmosphere and leading to global warming. According to the IPCC (IPCC Special Report, 2018), atmospheric warming should be 2 emissions, together with capturing and sequestering CO2 from point sources. The most mature storage technique is sequestration in deep saline

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Original Research Mine Subsidence as a Post-Mining Effect

frequently induce or intensify geomechanical impacts from previous shallow coal mining, and historical residues from metal ore mining or quarrying. In the case of building safety, the problem not only results from the residual effects of mining activities (in a form of subsidence or sinkholes), but also from the prop-erties of the grounds, which create a direct foundation for

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Geomechanical Analysis In Mine Design: An Integrated Approach

The most important geomechanics contributions to the mine design process are made in the dimensioning of stopes and pillars and in the control of energy release related to the sequencing of excavations. Until very recently, the dimensioning and sequencing of openings was based almost strictly on experience.

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Discrete Fracture Network approach to characterise rock

modelling process. In order to build a volumetrically simple DFN model, the primary fracture properties of orientation, fracture Elmo et al. Rock mass fragmentation and geomechanical upscaling 150 Mining Technology 2014 VOL 123 NO 3. the DFN fractures with the assumed free surface. Rock blocks are constructed by identifying those fractures that form closed two

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Original Research Mine Subsidence as a Post-Mining Effect in

The thin layers of loose rock mass close to the surface of the ground. – Mining in close proximity to geological faults. – Mining in a close proximity to bed outcroppings or other geological strata. – The high rate of advance of the mining front. – Overlaying mining area borders. A sinkhole may occur as a result of an underground

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Colorado School of Mines Home - Colorado School of Mines

Colorado School of Mines is a public research university focused on science and engineering, where students and faculty together address the great challenges society faces today—particularly those related to the Earth, energy and the environment.

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Coupled hydraulic and mechanical model of surface uplift due

Research into modelling mine water heat schemes has focused on heat extraction and flow transfer in mines ranging from analytical solutions to 3D numerical models. The inclusion of geomechanical processes in this research has meant a numerical solution is more appropriate than an analytical solution.

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PDF Geotechnical Considerations in Open Pit Mines

geotechnical engineering practice to mine design and general operating procedures, to allow safe and economic mining of any commodity within any rock mass *. The intent of this guideline is to provide examples of good geotechnical engineering practice and to assist mining operators in achieving compliance with Regulation 13.8 of the Mines

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Changes in Geomechanical Properties of Carboniferous Rocks

Key words: geomechanical properties, minewater rebound, void spaces Introduction In the mine surroundings, in the eastern and western parts of the Upper Silesian Coal Basin (USCB), within the mineral deposit series being subject both to mining and now to flooding processes, there

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Biomediated Geomechanical Processes for Dust Mitigation and

Associate Professor Eric Seagren (CEE/SFI) and CoPIs Assistant Professor Thomas Oommen (GMES/SFI) and Associate Professor Stan Vitton (CEE/SFI) have received $202,912 from NSF for a three-year project, “Biomediated Geomechanical Processes for Dust Mitigation and Monitoring at Mine Tailings Impoundments.”

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Mining - Underground mining | Britannica

Mining - Mining - Underground mining: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered. Counting against underground mining are the costs, which, for each ton of material mined, are much higher underground than on the

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An analytical geomechanical upscaling approach for modeling

Over the past few years, the increase in scale of open pit mines and a need to more accurately predict the subsidence induced by block cave mining have highlighted the need to develop new analytical techniques to replace empirical rock mass rating systems in order to better evaluate fractured rock mass properties and simulate its behaviour. This thesis focuses on the development of an

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Development of the Mine Geotechnical Risk Index

Mining Geomechanical Risk 2019, Perth, Australia 463 For instance, in the scenario of a simple circular failure (as outlined in Figure 1), it is possible to calculate the Factor of Safety using the Bishop or Morgenstern–Price methods.

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A Reservoir and Geomechanical Coupling Simulation Method

A finite difference method (FDM) reservoir simulator is used to couple thermal-hydrological-chemical (THC) processes, while a finite element method (FEM) geomechanical simulator takes on the role of a thermal-hydrological-mechanical (THM) coupling calculator.

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