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slope stability in open pit ore dressing

  • Pit Slope Stability Monitoring Plan

    Pit Slope Stability Monitoring Plan, Rev. 3 Page 2 2.0 PLAN DETAILS The details associated with this Plan are listed below. 2.1 MINE PLANNING Open pit design not only takes ore grade into consideration but also the strength and competency of the materials making up the pit walls, including structural features that may create zones of weakness.

  • SLOPE STABILITY ANALYSIS FOR OPEN PITS 1

    Analyses of a deep wall in an open pit mine in the Peruvian Andes are used to compare limit equilibrium methods (SLIDE) with distinct element methods (UDEC) when the stability is controlled by rock mass strength. The pit wall has an overall slope angle of 37º and a

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  • Abstract LOP

    controlling pit slope stability culminated in the book Rock Slope Engineering (2) and the CANMET Pit Slope Manual (3). With these books providing a technical basis the process of pit slope design was developed. For slopes of 300 m or less, even in “fair” rock structural factors were typically the main constraint on stability, while for weak

  • The Influence of Earthquakes on Open-Pit Slope Stability

    open-pit slope stability. Figure 1. shows the basic coal open-pits located within the zone of seismoactive zones of Russia. At present, most of them are positioned at Kuzbass within the zones of vibration level VI-VII, but, however, as exploring for mineral resources in Siberia and the Far East, it is expected the rise of number of

  • Probability of Stability Design of Open Pit Slopes Richard

    applied to open pit slope design. Uncertainty and risk have always been associated with mining. This is evidenced in the common mining terminology of proven ore, probable ore, and possible ore. From a geo­ technical standpoint, the miner is often faced with working in very difficult ground conditions.

  • DESIGN OF STABLE SLOPE FOR OPENCAST MINES

    2. Open Pit Slopes — An Introduction 2.1 Slope Stability 2.2 Types of Slope Failure 2.2.1 Plane Failure 2.2.2 Wedge Failure 2.2.3 Circular Failure 2.2.4 Two Block Failure 2.2.5 Toppling Failure 2.3 Factors To Be Considered In Assessment Of Stability 2.3.1 Ground Investigation 2.3.2 Most Critical Failure Surface 2.3.3 Tension Cracks 5 5 11 11 14

  • THE STABILITY OF SLOPES IN OPEN CAST MINES AND THE

    Total Volume of Ore Re covered. (Slope Angle 3 = 35°) 2* (b) Ditto (Slope Angle p = 450) 25. Inotantanoous Stripping Ratio vs. Total Volume of Ore Rocovcx'ed. 26. Section through Pit B showing Hypothetical Example of Variation of Pit Slope Angles Depending on the Policy of the Mine. 27. A Family of Curveo for the Different Values of the Slope

  • Risk-Based Design and Management of Open Pit Slopes

    Felicia’s primary areas of practice include engineering geology, 3D geotechnical models and stability assessments for open cut mining. Felicia enjoys a spectrum of projects from short life operations to large scale pits in complex risk settings. The development of accurate ground models and appropriate slope designs is her greatest pleasure.

  • CASE STUDY: Nchanga Open Pit GroundProbe

    NCHANGA OPEN PIT (NOP) USES SSR TECHNOLOGY TO OPTIMISE rocks becomes a major factor in slope stability. The pit was planned to deepen to the 330m bench by July 2004. The geotech department in consultation with able to safely recover all of the ore. The Slope Stability Radar is now an integral part of NOP.

  • Open Pit Mining Geotechnical Consulting Services CALL

    The design of slope angles is influenced by: Geologic structure; Rock strength; Hydrogeology; Ore distribution; Operational considerations; Generally, the most critical factor in slope stability is the orientation of geologic structure relative to the pit wall and the resulting maximum attainable bench-face angles and catch-bench widths.

  • Open Pit Slope Design & Stability

    In the concept of mining a deposit, mining operations should be planned and organized in order to maximize the productivity. Slope stability issues directly affect the productivity. It’s for these reasons that they need to be addressed with theoretical and technical expertise. And the realization of a surface mine, 3 fundamental processes should be taken into account. The first one is the

  • Probability of Stability Design of Open Pit Slopes Richard

    applied to open pit slope design. Uncertainty and risk have always been associated with mining. This is evidenced in the common mining terminology of proven ore, probable ore, and possible ore. From a geo­ technical standpoint, the miner is often faced with working in very difficult ground conditions.

  • Pit Slope Stability Monitoring Plan

    Pit Slope Stability Monitoring Plan, Rev. 3 Page 2 2.0 PLAN DETAILS The details associated with this Plan are listed below. 2.1 MINE PLANNING Open pit design not only takes ore grade into consideration but also the strength and competency of the materials making up the pit walls, including structural features that may create zones of weakness.

  • 2020 International Symposium on Slope Stability in Open

    Regulation of open pit slope stability in Russia A Makarov, I Livinsky, V Spirin, SRK Consulting (Russia) Limited, Russia; A Pavlovich, Saint-Petersburg Mining University, Russia An overview of the slope monitoring program at the Serra Sul Iron Ore Project, S11D, northern Brazil MF Souza, E Friguetto, WJ Souza, AHCR Castro, Vale S.A., Brazil

  • [PDF] Guidelines for Open Pit Slope Design Semantic Scholar

    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

  • Slope stability study for optimum design of an opencast

    Slope monitoring did not reveal any movement in and around the pit. Keywords: Rock excavation, Safety analysis, Slope stability, Surface mining Introduction The geotechnical study and slope design was conducted of an open pit copper mine (500 m long, 200 m wide) situated in Rajasthan, India. The ore body is 40 m wide and 313 m long.

  • INSTITUTE OF QUARRYING & ASPASA SLOPE STABILITY RISK

    SLOPE STABILITY RISK OPEN PIT By Alan Bye, Geotechnical Engineer, Anglo Platinum Megan Little, Rock Engineer, PPRust, Anglo Platinum Desmond Mossop, Manager Rock Engineering, In a single month the mine processes 400,000 tonnes of ore and excavates 50 million tonnes of ex-pit material annually. 25 million tonnes are mined from each of

  • Integrated structural stability analysis for preliminary

    A design module has been developed for integrating slope stability analysis into the data management, ore reserve and pit optimisation processes of an open pit mine. The developed slope stability analysis tools were successfully implemented along the full projected pit model of a surface mine in Canada.

  • The Influence of Earthquakes on Open-Pit Slope Stability

    open-pit slope stability. Figure 1. shows the basic coal open-pits located within the zone of seismoactive zones of Russia. At present, most of them are positioned at Kuzbass within the zones of vibration level VI-VII, but, however, as exploring for mineral resources in Siberia and the Far East, it is expected the rise of number of

  • Time-Dependent Movements of Open-Pit Slopes Technische

    Slope Stability Assessment at the Main Cresson Mine. Pierce, M 251 Analysis of Stability Loss in Open-Pit Slopes and Assessment Principles for Hard, Tectonically Stressed Rock Masses. Kozyrev, A. A . Reshetnyak, S. P. Influence of the Direction of Ore Placement on the Stability of Ore Heaps on Geomembrane-Lined Pads. Smith, M. E

  • Pit slope designs Engineering geology

    Nov 28, 2019· Open-pit design. The aim of any open-pit mine design is to provide an optimal excavation configuration in the context of safety, ore recovery and financial return. Investors and operators expect the slope design to establish walls that will be stable for the life of the open pit, which may extend beyond closure.

  • Risk-Based Design and Management of Open Pit Slopes

    Felicia’s primary areas of practice include engineering geology, 3D geotechnical models and stability assessments for open cut mining. Felicia enjoys a spectrum of projects from short life operations to large scale pits in complex risk settings. The development of accurate ground models and appropriate slope designs is her greatest pleasure.

  • Guidelines for Open Pit Slope Design CSIRO Publishing

    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

  • Pit and Dump Slope Stability and Slope Design Optimisation

    Slope stability and slope angle optimisation is critical in the design and operation of open pit mines having significant impacts on safety and on the economics of an open pit project. Approach The raw data for slope stability analysis and design comes from a geotechnical investigation programme which is best combined with the exploration

  • Open Pit Slope Design & Stability

    In the concept of mining a deposit, mining operations should be planned and organized in order to maximize the productivity. Slope stability issues directly affect the productivity. It’s for these reasons that they need to be addressed with theoretical and technical expertise. And the realization of a surface mine, 3 fundamental processes should be taken into account. The first one is the

  • (PDF) Evaluation of open pit mine slope stability analysis

    Evaluation of Open Pit Mine Slope Stability An alysis International Journal of Earth Sciences and Engi neering ISSN 0974-5904, Vol. 0 4, No. 04, August 2011, pp. 590-600

  • 2020 International Symposium on Slope Stability in Open

    Regulation of open pit slope stability in Russia A Makarov, I Livinsky, V Spirin, SRK Consulting (Russia) Limited, Russia; A Pavlovich, Saint-Petersburg Mining University, Russia An overview of the slope monitoring program at the Serra Sul Iron Ore Project, S11D, northern Brazil MF Souza, E Friguetto, WJ Souza, AHCR Castro, Vale S.A., Brazil

  • Integrated structural stability analysis for preliminary

    A design module has been developed for integrating slope stability analysis into the data management, ore reserve and pit optimisation processes of an open pit mine. The developed slope stability analysis tools were successfully implemented along the full projected pit model of a surface mine in Canada.

  • Geotechnical assessments of the stability of slopes at the

    Shear strength Weathering Slope stability Introduction The Cakmakkaya and Damar open pit mines are two of the main copper deposits of Turkey, approximately 55 km north of the city of Artvin (Fig. 1). They are two adjacent open pits separated by a sterile area and situated in steep mountainous terrain in the eastern part of Black Sea Region.

  • Rapid Characterisation Of Slope Instability Using LiDAR

    Following a multi-bench structural instability along the primary haul road for an operating open-pit copper mine, SRK was tasked with rapidly evaluating geologic structure in the area and subsequently assessing pit slope stability. It was important to determine whether significant pit slope design modifications were necessary for further mining

  • Rapid and robust slope failure appraisal using aerial

    Sep 01, 2020· In contrast, empirical methods such as slope mass rating (SMR),,,Q-slope,, and slope stability assessment methodology (SSAM),can be applied in real-time to assess stability as slopes are exposed in the field. Typically, these empirical methods require between 5 and 15 min in the field to assess slope stability for a 10 m long section.

  • A RISK CONSEQUENCE APPROACH TO OPEN PIT SLOPE

    International Symposium on Stability of Rock Slopes in Open Pit Mining and Civil Engineering Mr P J Terbrugge _____ Page 82 2 THE RISK/CONSEQUENCE ANALYSIS IN DESIGN Benefits of adopting the risk/consequence approach to slope design for open pit mining operations, effectively allow the owners to define their risk criteria taking account of

  • STABILITY PROBLEMS AND ROCK SUPPORT AT THE TELLNES

    The Tellnes open pit mine in Southwestern Norway has been operating since 1960. The maximum height of pit walls is currently about 150 meters with the current mine plan extending this distance to 400 meters with slope stability being a major controlling factor. As a result of unfavorable combinations of directions of major joints and faults,

  • Structural Geology applied to mining Ingeoexpert EN

    Modes of failure (Slope stability) in open pits Why it is important to understand the main modes of failure in open pit mines at relatively shallow depths on discontinuities that define toppling, wedge and plane failures and also how circular failures develop.

  • Stripping Ratio Mineral Production Activities

    This is why stripping ratio is such a crucial aspect of open pit design and of open pit mine management. Maximum economy is achieved with lowest stripping ratio, which in turn is achieved by the steepest possible safe pit slope. There is a safe limit to how steep the sides of a pit can be, and this is determined by slope stability.

  • Paper: Slope monitoring and data visualisation state-of

    Jooste, M.A. and Cawood, F.T. (2007) Survey Slope Stability Monitoring: Lessons from Venetia Diamond Mine, in Proceedings International Symposium on Stability of Rock Slopes in Open Pit Mining and Civil Engineering (Slope Stability 2007), Y. Potvin (ed), 12–14 September 2007, Cape Town, South Africa, Australian Centre for Geomechanics, pp

  • Cost effectiveness of open-pit hard rock Ore Mining by

    Feb 25, 2011· In hard rock open-pit ore mine, without jeopardizing slope stability, it is of prime importance to keep the pit slope angle as steep as possible, maintaining excavated waste at a minimum.

  • Pit slope designs Engineering geology

    Nov 28, 2019· Open-pit design. The aim of any open-pit mine design is to provide an optimal excavation configuration in the context of safety, ore recovery and financial return. Investors and operators expect the slope design to establish walls that will be stable for the life of the open pit, which may extend beyond closure.

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