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slope failure open pit mines

slope failure open pit mines

slope failure open pit mines
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Analysis of a slope failure in an open pit mine using In 1996 a slope failure occurred at the Round Hill open pit mine, operated by Macraes Mining Company Ltd

slope failure open pit mines

  • Analysis of a slope failure in an open pit mine using

    In 1996 a slope failure occurred at the Round Hill open pit mine, operated by Macraes Mining Company Ltd The failure as shown in Figure 1, involved three benches at an intermediate slope that was being pushed back towards the final high wall location Figure 1 Photograph of pit area involved with slope failureIn this study, the objective was to develop a new and highlyaccurate artificial intelligence model for slope failure prediction in openpit mines For this purpose, the M5Rules algorithm was combined with a genetic algorithm (GA) in a novel hybrid technique, named M5RulesGA model, for slope stability estimation and analysis and 450slope observations in an openpit mine in Vietnam werePrediction of slope failure in openpit mines using a· Slope collapse is a critical hazard in openpit mines as it can be of any scale, small or large, and directly affect people, equipment, and production processes (Fig 1)Therefore, analysis andPrediction of slope failure in openpit mines using a

  • ANALYSIS OF A SLOPE FAILURE IN AN OPEN PIT MINE USING

    In 1996 a slope failure occurred at the Round Hill open pit mine, operated by Macraes Mining Company Ltd The failure as shown in Figure 1, involved three benches at an intermediate slope that was being pushed back towards the final high wall location Figure 1 Photograph of pit area involved with slope failure The slope failure was wellA slope failure that occurred at an open pit copper mine is presented throughout as a case example The spatial analysis component of the methodology uses a benchmark point (or pixel), based on an alarm threshold specific to each failure case, and averaged deformation increments based on a percentage of the deformation measured by the benchmark pixel at the time of alarm The temporal analysisPaper: Early detection of impending slope failure in open· From a mining perspective, most open pit lignite mines have sufficient operational flexibility to withstand considerable slope displacements, as long as these are effectively monitored and modeled, so that: (i) sliding mechanisms are well interpreted, (ii) predictions regarding their magnitude and kinetic behaviour can be made, and (iii) operational safety is guaranteed As a result, theSlope failure incidents and other stability concerns in

  • Development of an earlywarning timeoffailure analysis

    the time of slope failure in three hardrock openpit mines that occurred between 2001 and 2005 They observed that the inverse velocity often approaches linearity, especially close to the time of failure, and recommend the use of linear fits updated on an ongoing basis using theIn open pit mining, it is accepted to trade off some failures for steeper bench face angles, without compromising safety, since it is more economical to deal with regular cleanups than to have higher stripping ratios This is generally referred to as a “managed” approach to slope design A design reliability of 80% is generally accepted in open pit design, which means allowing 20% ofSLOPE STABILITY ANALYSIS FOR OPEN PITS 1Keywords: Slope stability, open pit mining, numerical modeling, rock mass strength, failure mechanisms iii ITEM TITLE PAGE NO 1 ACKNOWLEDGEMENT i 2 ABSTRACT ii 3 List of Figures vi 4 List of Tables vii Chapter: 01 INTRODUCTION 1 11 Overview 12 Objectives 13 Research Strategies 14 Outline of Report 2 3 3 3 Chapter: 02 LITERATURE REVIEW 4 2 Open Pit Slopes — An Introduction 21 SlopeDESIGN OF STABLE SLOPE FOR OPENCAST MINES

  • slope failure open pit mines in nigeria

    slope failure open pit mines in nigeria In 1996 a slope failure occurred at the Round Hill open pit mine operated by Macraes Mining Company Ltd The failure as shown in Figure 1 involved three benches at an intermediate slope that was being pushed back towards the final high wall location Figure 1 Photograph of pit area involved with slopeSlope collapse is a critical hazard in openpit mines as it can be of any scale, small or large, and directly a˜ect people, equipment, and production processes (˚ 1)˛erefore, analysis andPrediction of slope failure in openpit mines using a· From a mining perspective, most open pit lignite mines have sufficient operational flexibility to withstand considerable slope displacements, as long as these are effectively monitored and modeled, so that: (i) sliding mechanisms are well interpreted, (ii) predictions regarding their magnitude and kinetic behaviour can be made, and (iii) operational safety is guaranteed As a result, theSlope failure incidents and other stability concerns in

  • Development of an earlywarning timeoffailure analysis

    the time of slope failure in three hardrock openpit mines that occurred between 2001 and 2005 They observed that the inverse velocity often approaches linearity, especially close to the time of failure, and recommend the use of linear fits updated on an ongoing basis using the· Mining under an open pit slope results in the collapse and slide of the slope In this paper, a combination of methods including Google Earth and field investigations is applied to investigate the process of eastern slope failure induced by underground mining in the Yanqianshan Iron Mine over five years According to the observed ground deformation features, the geomorphic zone of the easternStudy on the Process and Mechanism of Slope Failureexposing personnel and mining equipment to the slope failure risk recording of the stability of the rocks making up the slopes surrounding an open pit mine The main reasons why slope stability monitoring is done are: 1 To verify mine design In this case slope monitoring measurements can be used as a basis for maintaining, steepening or reducing slope angles with the resultant economicPREDICTION OF SLOPE FAILURE AT LETLHAKANE MINE WITH

  • LARGE SCALE SLOPE STABILITY IN OPEN PIT MINING A REVIEW

    carried out routinely in all open pit mining Provided that the failure is slow and stable, it is also possible to continue to mine a failing slope This requires that contingency plans are being made at an early stage in the mine planning process From the collection of a number of case studies from North and South America, Africa, Asia and Europe, several examples of large scale failures· A massive slope failure has occurred at the open pit of the Bingham Canyon Mine in Utah Here is a link to a magnificent collection of photographs of the failure, which appears toThe Bingham Canyon Mine slope failure · On the footwall rock slope of an open pit, planar failure mechanisms occur when a rock mass slip down the slope International symposium on stability of rock slopes in open pit mining and civil engineering, the South African Institute of Mining and Metallurgy (pp335–342) Havaej M, Stead D, Eberhardt E, Fisher BR (2014) Characterization of biplanar and ploughing failure mechanisms inFootwall Rock Slope Stability Evaluations at Nchanga Open

  • Open Pit Mining | IntechOpen

    · The main purpose of this chapter is to discuss 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 The chapter will also discuss different variants ofProceedings of the 27th International Symposium on Mine Planning and Equipment Selection MPES 2018Guidelines for Open Pit Slope Design in Weak RocksMount Hope ProjectRecent Research on Engineering Geology and Geological EngineeringSlope TectonicsGuidelines for Open Pit Slope Design in Weak RocksRock Slope EngineeringGeotechnical EngineeringGuidelines For Open Pit Slope DesignSlope collapse is a critical hazard in openpit mines as it can be of any scale, small or large, and directly a˜ect people, equipment, and production processes (˚ 1)˛erefore, analysis andPrediction of slope failure in openpit mines using a

  • Mines Safety Significant Incident Report No 12 Slope

    SLOPE FAILURE – OPEN PIT MINE INCIDENT A slope failure involving an estimated 270,000 tonnes of rock occurred recently in an open pit mine The slope in which the failure occurred had been extensively cable bolted The failure buried machinery valued at approximately $400,000 and effectively destroyed the main haul road to the pit The failure occurred without apparent warning and lastedCase history of an open pit coal mine slope failure at Luscar Alberta 1985 Master of Engineering in Geotechnical Engineering This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for noncommercial purposes This thesis, or any portion thereof, may not otherwise be copied orCase history of an open pit coal mine| ERAcarried out routinely in all open pit mining Provided that the failure is slow and stable, it is also possible to continue to mine a failing slope This requires that contingency plans are being made at an early stage in the mine planning process From the collection of a number of case studies from North and South America, Africa, Asia and Europe, several examples of large scale failuresLARGE SCALE SLOPE STABILITY IN OPEN PIT MINING A REVIEW

  • Jami M Girard , PE, CMSP Mining Engineer, National

    Massive slope failure at an open pit gold mine did not cause any injuries or accidents, but did cause significant production problems and high costs Diligent monitoring and examination of slopes for warning signs is imperative for protecting workers and equipment Geotechnical designs can be improved to increase factors of safety and proper bench designs can be improved to minimize rock fallmining environment as it applies to open pit slope designs and a description of the general process in use at the present time for formulating pit slope designs This paper presents a summary of the first chapter of the Guidelines and commentary on the design process and its application and the interaction of slope designs in the mine planning process Abstract P F Stacey Stacey MiningPit Slope Design Process Home LOP· According to failure time analysis described in the “Model evaluation” section, the landslide on the southern slope of the West OpenPit mine occurred on Mar 9, 2014 After March 10, the weekly average rate gradually decreased, but the landslide displacement still increased throughout the monitoring period, and the landslide mass gradually tended to stabilize The weekly average landslideA new prediction model for rock slope failure time: a case

  • Footwall Rock Slope Stability Evaluations at Nchanga Open

    · On the footwall rock slope of an open pit, planar failure mechanisms occur when a rock mass slip down the slope International symposium on stability of rock slopes in open pit mining and civil engineering, the South African Institute of Mining and Metallurgy (pp335–342) Havaej M, Stead D, Eberhardt E, Fisher BR (2014) Characterization of biplanar and ploughing failure mechanisms inProceedings of the 27th International Symposium on Mine Planning and Equipment Selection MPES 2018Guidelines for Open Pit Slope Design in Weak RocksMount Hope ProjectRecent Research on Engineering Geology and Geological EngineeringSlope TectonicsGuidelines for Open Pit Slope Design in Weak RocksRock Slope EngineeringGeotechnical EngineeringGuidelines For Open Pit Slope DesignThe research plan developed for the LOP Project focusses on three elements: preparation and publication of an authoritative new generation pit slope Design Guidelines book that clearly outlined for today’s practitioners what is the best approach to satisfy best practice at every stage of planning and operating an open pit mine; the effective use of geological and geotechnical data inGuidelines LOP