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Slopestability

May 06 2011This is particularly so because the most unstable parts of the earth are at the plate boundaries and it is also here that young fold mountain belts are formed and there are high relief and steep slopes Most open pit operators are familiar back break form blast but most people only consider the visible breakage behind the row of holes of the Get price

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Open Pit Slope Design 2009 pdf

Most of these elements are common to any open pit mining operation regardless of the material to be recovered or the size of the open pit slopes 1 2 Pit slope designs The aim of any open pit mine design is to provide an optimal excavation configuration in the Get price

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Open Pit Mine Design

Itasca specializes in the assessment of slope stability and design of pit slopes on bench inter-ramp and global mine scales Itasca performs slope instrumentation and remediation design at many of the world's largest open pit mines Expertise in slope stability is not limited to open pit slopes Get price

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Open Pit Mining Flashcards

Open Pit Mining STUDY Flashcards Learn Write Spell Test PLAY Match Gravity Created by EmirForic Terms in this set (9) What is overall pit slope angle a function of? The ore deposit and the geotechnical stability of the pit What is bench height a function of? Governed by equipment and the mine regs (usually 8 to 15m)Get price

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Open Pit Slope Depressurization using Horizontal Drains

Open Pit Slope Depressurization using Horizontal Drains – a Case Study Simon Leech a) Matthew McGann b) a) PT Newmont Nusa Tenggara Geotechnical and Hydrogeological Dept Jl Sriwijaya # 258 Mataram 83126 Indonesia email Simon LeechNewmont tel +62 8175749564Get price

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What is the difference between an open cast mine and an

Feb 10 2020Surface mining- Surface mining can be defined as the extraction of valuable mineral/ore from the Earth in which mineral/ore is situated in shallow depth Classification of Surface Mining Methods- 1 Mechanical Extraction Method- 2 Aqueous ExtraGet price

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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 37 and a Get price

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Pit slope depressurisation investigation for an open cut

Expansion of active open cut mines and development of new deposits below the pre-mining water table present significant challenges in terms of general mine dewatering and pit slope depressurisation Studies to characterise pore pressure behaviour have become a key component of the mining cycle Get price

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Guidelines for Open Pit Slope Design in Weak Rocks Derek

Guidelines for Open Pit Slope Design in Weak Rocks by Derek Martin Peter Stacey published January 2018 The ISBN is 9781486303472 The publisher is CSIRO Publishing Buy Guidelines for Open Pit Slope Design in Weak Rocks from CSIRO PUBLISHING online Get price

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Excavations Open Pit Mines

GeoStudio establishes insitu stresses and pore-water pressure conditions so that upon removal of the ground rebound displacements can be computed Steady state or transient pore-water flow systems can be simulated and incorporated into dewatering and stability evaluations Detailed stress paths can be monitored during transient changes in pore-water pressure Get price

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Pit Slope Optimization Based on Hydrogeologic Inputs

Apr 14 2015Based on comprehensive field hydrogeological data collection and interactive numerical groundwater and geotechnical modeling it is possible to evaluate the water pore pressure effect on the pit slope to provide an efficient depressurization strategy to meet the geotechnical engineering targets and thus to develop cost-effective mine plans Get price

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Open pit mine planning considering geomechanical

are studied when changing the admissible FoS of the slopes at an open pit mine This paper is organised as follows Sections 2–4 provide a review of the Hoek–Brown failure crite-rion the methods of slope stability analysis and the aspects of open pit mine planning that are relevant to this work Get price

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Guidelines for open pit slope design

vi GuidelinesforOpen Pit Slope Design 2 4 1 Introduction 26 2 4 2 Planningandscoping 26 2 4 3 Drill holelocationandcollarsurveying 27 2 4 4 Corebarrels 27 2 4 5 Downholesurveying 27 2 4 6 Coreorientation 28 2 4 7 Corehandlinganddocumentation 29 2 4 8 Coresampling storage andpreservation 31 2 4 9 Corelogging 32 2 4 10 Downholegeophysicaltechniques 39 2 5 Get price

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A Risk Evaluation Approach for Pit Slope Design

slope angle is a key aspect of the mining business The difficulty in determining the acceptable slope angle stems from the existence of uncertainties associated with the stability of the slopes Table 1 summarizes the main sources of uncertainty in pit slopes These uncertainties are accounted for during the process of design of theGet price

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Open Pit Mine Design

Itasca specializes in the assessment of slope stability and design of pit slopes on bench inter-ramp and global mine scales Itasca performs slope instrumentation and remediation design at many of the world's largest open pit mines Expertise in slope stability is not limited to open pit slopes Get price

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Validation of the Slope Monitoring Programme at Nchanga

determination of safe slope angle high level of slope monitoring technology and new management strategies The paper reports on the methodology used in this research mainly based on geotechnical parameters for safe design of the slope pit The Nchanga – Chingola region Open Pit F and COP F/D Phase III was thestudyGet price

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The Influence of Earthquakes on Open

the open-pit slope tests were carried out on models with sliding plane in the form of flat inclined contact (Figure 5) as base the model was chosen with inclina-tion angle 20˚ of sliding plane and calculated safety fac-tor 1 26 Measuring technique was analogous to the tests Get price

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Geotechnical considerations open pit audit guide

Geotechnical considerations open pit audit – guide Page 2 of 28 Introduction This document was reformatted in November 2015 At this time no material changes were made to the content of the guide which was originally published in September 2009 under the title Guide to open pit geotechnical considerations HIF audit 2009 Get price

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KSM 2012 PFSU Open Pit Design Review

Jun 12 2012PFS Open Pit Stability03 ReportKSM 2012 PFSU Open Pit Design Review - FINAL 20120612 docx BGC ENGINEERING INC 2 0 CURRENT SCOPE OF WORK To confirm that the MMTS open pits conform with the open pit slope designs provided by BGC (2011a 2011b 2011c) the geometries of the Mitchell Sulphurets and Kerr pit slopesGet price

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Best practice and new technology in open pit mining

has highlighted the need for appropriate and effective pit slope management programmes Such a programme comprises many facets including mine hazard plans regular slope inspections cleaning of interim and final pit faces blasting practices histories of failures pit depressurization stormwater control and evacuation procedures Get price

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Rock Mechanics and Pit Slope Design

In terms of deep seated stability assessments it was considered prudent to assume that only limited slope depressurization may occur in any given area of the pit Stability Analyses and Slope Design The main objective of most open pit slope design studies is to determine the steepest overall slope geometry which can be reasonably achieved Get price

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Open Pit Slope Design 2009 pdf

Aug 02 2017GUIDELINES FOR OPEN PIT SLOPE DESIGN EDITORS JOHN READ AND PETER STACEY EDITORS JOHN READ PETER STACEY G U I D E L I N E S F O R O P E N P I T S L O P E D E S I G N Guidelines for Open Pit Slope Design is a comprehensive account of the open pit slope Get price

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Slope Design and Implementation in Open Pit Mines

and also limitations through case studies of slope design in open pit mines Keywords slope stability slope design engineering geology fault open pit mines SOMAIR uranium mine OCP phosphate mine 1 INTRODUCTION Slopes of mines and quarries some Get price

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Development of drain hole design optimisation a

High rainfall in equatorial regions leads to high groundwater levels or pore pressures and a high risk of landslides on the slopes of open pit mines hindering mining operations To lower the groundwater level surrounding a slope a drainage system is needed A drain hole is a part of a drainage system which utilises gravity to drain groundwater Get price

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Open

• Drilling and blasting for stable pit walls • Mine water risk in slope stability • Monitoring and maintaining open pit slopes • Assessing the risks with open pit mining Learning outcomes After successful completion of the course you will have a better understanding of the open pit mine planning process Get price

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Neil Bar

Dec 11 2019- Open pit slope design and interaction between large open pits and underground mines - Assessment and management of unstable slopes and landsides - Engineering geological models and support regimes for underground excavations - Hydrogeological investigations for depressurization of slopes ExperienceGet price

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Technology Data Sheet Mine Dewatering

Technology Data Sheet Mine Dewatering Groundwater is a common problem when mining and developing a mine below groundwater level Examples of mine dewatering techniques at an open pit mine Open Pit Dewatering Techniques In-pit pumping exposed in the pit slopes or drainage tunnels and adits driven near the open pit to promote drainage in Get price

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Pit slope designs

Nov 28 2019Open-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 Get price

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Guidelines for Open Pit Slope Design John Read Peter

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 Get price

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Open Pit Slope Depressurization using Horizontal Drains

How much slope depressurization is appropriate in a large open pit environment is difficult to quantify and often a philosophy of "more must be better " has to be adopted due to the lack of integrated modelling tools that are available to assist in the optimization of the slope design Get price

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Friday letters Health care Trump unleashed and mine

Mar 05 2020I would also have folks note that Gypsum also at the foot of a valley and with its own open pit mine and sheet rock plant is often coated with a layer of fine gypsum dust Then we learn about Mr Henderson who owned the gravel pit next to I-70 at the top of Clear Creek Canyon near Golden Mr Get price

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