Slope Stability Study For Optimum Design Of A Copper

Abstract the overall slope angle osa of pit walls playsrucial role in the financial return of open pit mines. the paper showcasesovel design methodology where nonplanar geotechnically optimal pit walls with an osa steeper than what is used in current design practices are employed without compromising mine safety, i.e. the optimal profiles are.

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Optimal system design for instrumented slope monitoring in open pit mines sanjive narendranathannd hamid nikraz engineeroffey mining pty ltdrofessor of civil engineering, curtin university of technology synopsis the importance of slope mo nitoring, and its place in the design and operation of an open pit mine are presented.

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Design of optimum slopes for safety and conservation increasing depth also increased the severity of slope stability problems of the opencast mines. unlike the previous quarrying practices at shallow depths, nowadays, study the stability alternative slope design provides with additional flexibility.

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Sectors with overall slope heights of more than 1,200 m. because of their large size and the corresponding large stripping volumes, there is often an economic incentive to design working pit slopes near the optimum overall slope angle. however, experience has shown thatignificant amount of slope displacement can be.

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For the box cut design with optimum safety, the recommended parameters are stable slope angle35 40 ramp angle8epth of pit60 meters bench width4.9 meters and the bench length13.25 meters.

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Introduction the geotechnical study and slope design was conducted of an open pit copper mine 500ong, 200ide situated in rajasthan, india. the.

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Ate design slope angle that can cause an adverse minimize project costs and throws the other hand, the stabil ity conditions in the safe walls of the mine life will provide essential and seems obvious. therefore, in this study to determine the optimal slope angle of overall and bench of west wall of the chadormalu ore iron.

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So the overall pit slope is lesser the interramp slope. in the example, almost 50 more tonnage must be moved to mine the same pit bottom. in the early design ofitesser pit slope can be used to allow for the road system. the pit in fig.as designed with an overall slope of 380. the overall slope to use will depend on the width.

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1. theory of slope stabilityn the lecture part of this course we will discussariety of methods of analysis of slope stability and instability. it is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of determining, relatively unambiguously, whether a.

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Specific slope design configurations, stability values and sensitivity parameters were estimated for these areas.ajor feature plan and cross sections have been produced based on the structural and geotechnical data collected. the plan has proven very useful for slope design. five slope designs have been used since the mine started.

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On the other hand, selection of high slope angles may reduce safety and causes failure. therefore, to prevent slope failure and high stripping,ompromise is necessary to select an optimum slope angle. there are several methods of analyzing the stability of open pit slopes such as limit equilibrium methods, empirical methods and numerical.

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1. introduction. determination of acceptable slope angles for openpit mines isey aspect of the mine design, as it implies seeking the optimum balance between the additional economic benefits gained from having steeper slopes, and the additional risks resulting from the consequent reduced stability of the openpit slopes .but, pit slope as one of three important.

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Slope stability studies at knob lake le d. f. coates, m. gyengend j. b. stubbinsbstract the object of the slopestability studies at knob lake has been to obtain tneasurements in the open pits which, together with the results of laboratory tests, would permit the prediction of instability in the incompe tent wall rocks. some work is also being done in the.

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556 1999 describes techniques for probabilistic analyses and their application to slope stability studies. f. computer programs and design charts. computer programs provideeans for detailed analysis of slope stability. design charts provideapid method of analysis but usually require simplifying approxima.

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Slope stability analysis forms an integral part of the opencast mining operations during the life cycle of the project. in indian mining conditions, slope design guidelines were not yet formulated for different types of mining practices and there isrowing need to develop such guidelines for maintaining safety and productivity.

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The spacing effect of pile is examined inhreedimensional piled slope model and the factor of safety is found to approach the case without pile when the ratio of spacing to pile diameter is equal or greater than 8.0. an optimal pile spacing of sd of 4.0 is found. based on study of the influencing factors in piled slope stability, an.

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Mining engineering, slope stability, mine planning, integrated design, acceptance criteria. citationrenon m. amp laflamme a. j. interramp and bench design of openpit mines the portage pit case study. canadian geotechnical journal 2011 4811, 16011615.

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Ranging from 1.5 1.8. for the box cut design with optimum safety, the recommended parameters are stable slope angle35 40 ramp angle8, depth of pit60 meters bench width 4.9 meters and the bench length 13.25 meters. keywords boxcut slope, slope stability, finite element analysis, limit equilibrium.

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Study on stability analysis and monitoring technology of deep concave openpit stability analysis and optimum reinforcement design for an intense weathered rock slope kuan qi1, zhuoying tan1, in view of the complex structural characters of chengmenshan copper mine slope, the slope stability should be analyzed and additional.

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The objective of the numerical modelling study and slope stability analysis using the finite element method fem is to determine the optimum pit slope design. many simulations were carried out by varying the overall pit slopes and the depth of the open pit coal mines. the pit slope withafe condition in stability andeasonable wastecoal ratio was chosen as the.

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Slope stability analysis in that paper they concludeethodology of slope stability analysis and provide an insight into the basic of constant affected by change in relationship for shearing stress and resistance. 4. a. burman, s. p. acharya etc. all 2015 comparative study of slope stability analysis using.

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It is critically stable because the cutoff value of the safety factor for the slope design was selected to be 1.2, due to the need for long term stability for the mine slopes. so, more critical joints are exposed in the 65 slope face. therefore, an overall slope angle of 60 isogical choice. 4.2. slope design of footwall slope.

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Slope stability monitoring in open cut mining is increasingly based on the use ofariety of different sensors and associated analytics, each capable of providing part of the understanding required to manage complex geotechnical environments. designing an integrated monitoring system that is both attainable and fit for purpose can therefore be particularly.

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The planting of shrubs and trees on geogridreinforced slopes is an important ecological slope protection method that is frequently implemented in the rainy areas of southern china. first, this paper analyzes the soilfixing principle of the geogrid and root system and demonstrates the feasibility of using composite vegetation of shrubs and trees to reinforce the.

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The design of benches, as well as the highwall and shortwall slope heightsangles can be determined aftereries of slope stability studies. geotechnical investigations of open pit mining are not only important for slope failures but also vital to short and longterm mine planning.

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Slope design comprises several components that are shown in figure 1, they are bench, interramp, and overall slope. depending on the specific site conditions either one or all three elements can be considered for the design. each slope element has specific design criteria which can be applied. slope stability 2007 y. potvin ed.

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For the box cut design with optimum safety, the recommended parameters are stable slope angle 35 40 ramp angle 8, depth of pit 60 meters bench width 4.9.

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These initial design criteria were developed with the notion that the risk for largescale failure was small. detailed analysis of the largescale slope stability showed thatteepening of both the interramp and the overall slope angles was possible sj berg, 1999 sj berg and norstr m, 2001, under the assumption that the slopes were drained.

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The optimum design of final highwall isultivariable and complex technical problem that every change in any factor will influence the stable state. based on the historycase, this paper applied the critical sliding field to search the critical slip and evaluate the stability of slope with different geometric forms. comprehensively compared the global and local slope stability and its.

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Fhwa nhi06088lope stability soils and foundations volumeecember 2006 6.1 effects of water on slope stability very soft, saturated foundation soils or ground water generally playrominent role in geotechnical failures in general. they are certainly major factors in cut slope stability and in.

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