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sandstone open pit mining slope

Influence of Goaf on the Slope Stability of the Open-pit Dump

Influence of Goaf on the Slope Stability of the Open-pit Dump Guoyu Yang, Tao Shang*, Liu Han School of Mines, China University of Mining & Technology, Xuzhou 221116, China 1. INTRODUCTION With the gradual increase in the proportion of open-pit mining in China's mining area, the safety of open-pit slopes has become more and more prominent [1-2].

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Freeze-Thaw Effects on Stability of Open Pit Slope in High ...

The present situation of open pit mining is shown in Figure 4. The minimum mining elevation is +4000 m and the maximum mining depth is 135 m. The stability analysis herein is made according to the geological environment conditions, the present production situation of open pit mine, and the structural characteristics of the slope rock mass.

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Safety Evaluation on Slope of Saindak Open-pit Mine ...

Open-pit mines often have large scale, and slopes of them are usually designed as 300~500m in height, some even more than 700m, which badly damage geostress balance and result in artificial slope deformation, destruction and slippage. This problem exerts serious influence on mine’s safe production and causes huge economic loss.

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Evaluating the role of groundwater in the stability of ...

sandstone, siltstone, shale and coal of Triassic to mid Miocene age that filled a regional ... unusual in that steepening slopes in an open pit by a small amount usually has a significant ... along Seam 4 from the top of the slope to 40m depth, mining along Seam 5 from the to 80m depth and then mining along Seam 7 for the remainder of the slope ...

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Sample Rocks Tests and Slope Stability Analysis of a Mine ...

The safety and stability of waste dump are vital influencing factors to the mine sustainability and mine employees. Based on a real mine project in a certain open-pit mine waste dump in Tibet, the in situ test on waste rocks from waste dump, including measurements of density, water content, rock size, and natural repose angle, was conducted. Afterwards, these sample waste rocks, of which grain ...

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Pit Slope Stability Analysis at Rajpardi Lignite Open Cast ...

Mining is an arduous job and involve risk at each working stage. In open cast mining method, since it is the main focus as it contributes major portion of production, stability of the slope is of utmost importance. To avoid a slope from failure, working is to be carried out …

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Investigation of Bishop's and Janbu's Models Capabilities ...

an overall slope angle less than the optimum value leads to a reduction in the depth of open-pit mining (the ultimate pit depth), and consequently, a reduction in the net present value of mine. Finally, in the homogenous and isotropic media, the results of the Bishop, Janbu, and numerical modelings are close together. 1. Introduction

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Research On Inner Dump Stability Of Baorixile Open Pit Mine

The dump basal of Baorixile open pit coal mine is cementation with dark mudstone, sandstone layer and sandstone layer on coal floor. Its tendency is roughly same with the inner advancing direction str... Font Size: a A A. ... open pit coal mine, dump slope, numerical simulation, rigid …

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GEOTECHNICAL CONSIDERATIONS IN OPEN PIT MINES

practice in open pit mines. The application of sound geotechnical engineering practice is considered to be an integral component of Part 2 of the Mines Safety and Inspection Act 1994 (MSIA). It is emphasised that this guideline is not totally inclusive of all factors concerning the application of geotechnical engineering in open pit mining.

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Pit wall optimisation and effective wall management ...

4 Pit slope design and configurations The slope configuration across the pit by material type is summarised in Table 1. The lake sediment slope was mined at 70° at bench height of 10 m and 10 m berm width, whilst the oxide and transitional slopes were mined between 55° and 65° at bench height 10 m and berm width of 6–7.5 m.

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Optimization of Land Saving and Loss Reducing and Slope ...

Research Article Optimization of Land Saving and Loss Reducing and Slope Stability Variation Patterns in Open-Pit Mine Tongsuo Guo,1,2 Wei Zhou,1,2 Zhaolin Li,1,2 Chuanwei Zhang,1,2 Qingxiang Cai,1,2 Ya Tian,1,2 Huairui Qin,1,2 Fuming Liu,1,2,3 Izhar Mithal Jiskani,1,2 and Dongxu Zhang4 1High-Tech Research Center for Open Pit Mines, China University of Mining and …

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Erosion characteristic of slope sandstone soaking in acid ...

Acid mine drainage(AMD) is one of the main reasons of slope instability in chemical mines with high sulfide. The pH values of the solution inside the mining pit decrease with the increasing of distance from ore body and vary from 1.2 to 4.6, according to the results of the water environmental investigation and the composition test of the slope sandstone in Xinqiao Pyrite Mine.

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Analysis of the Variation of Friction Coefficient of ...

Sandstone slopes are common in open pit mining. Sandstones usually contain joints, which when penetrated cause slope movement due to the slope sliding along the joints. The friction coefficient of rock joints is closely related to the stability of the slope [ 1 – 5 ], though it is difficult to predict as it is associated with several ...

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A COMPLEX GEOTECHNICAL MODELLING OF AN OPEN PIT …

Las Cruces mine is an open pit extracts copper sulphides from the volcano-sedimentary Palaeozoic deposit VMS deposit, typical of those present in other parts of the Iberian Pyrite Belt. Las Cruces pit is 1600 metres long x 900 metres wide x 250 metres deep. Mineralization is embedded in volcanic and other metamorphic rocks.

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Response of Stable Overall Slope Geometry of Open Pit Coal ...

MAKALAH ILMIAH RESPONSE OF STABLE OVERALL SLOPE GEOMETRY OF OPEN PIT COAL MINE IN WARUKIN FORMATION TO DEWATERING AND PEAK GROUND SEISMIC IN SOUTH KALIMANTAN, INDONESIA RESPONS GEOMETRI LERENG MENYELURUH STABIL TAMBANG TERBUKA PADA FORMASI WARUKIN, AKIBAT PENYALIRAN DAN GEMPA DI KALIMANTAN …

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SLOPE STABILITY ANALYSIS OF WASTE DUMP IN …

Slope stability analysis of waste dum p in Sandstone Open Pit Osielec 17 A very important issue which has considerable influence on stability conditions is proper dewatering of the object body dump.

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The Influence of Earthquakes on Open-Pit Slope Stability

counting on stability of open pit edges and open pit slopes is pseudo static approach [2-10]. However appli-cation of it leads to sufficient strong overstating of safety factor and ignores existing information about influence of relative small but longstanding oscillations from far earthquakes on the slopes stability, for instance [11].

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Experimental study of the influence of structural planes ...

resulting in a change in the slope stress state and extension and intersection of cracks in the slopes, causing the deteri-oration of the mechanical properties of surface planes.45,46 Open-pit mining will cause secondary damage to the slope and will intensify the cumulative damage to the structure of

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Slope Stability Analysis of Waste Dump in Sandstone Open ...

This paper presents the slope stability analysis for the current as well as projected (final) geometry of waste dump Sandstone Open Pit "Osielec". For the stability analysis six sections were selected. Then, the final geometry of the waste dump was designed and the stability analysis was conducted. On the basis of the analysis results the opportunities to improve the stability of the object ...

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Pit Slope Design Process - Home - LOP

A Brief History of Open Pit Slope Design Slope design is an integral part of the engineering of an open pit, regardless of its size. Most cases the slope angles are a key component dictating the economic viability of a proposed or current mining project. This has resulted in open pit mining operating

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IMPLEMENTATION OF REAL TIME GEOTECHNICAL …

Coal mining was initiated at the study site in 1969, and has been ongoing for 31 of the past 35 years, using both underground room and pillar and open pit truck and shovel operations. The surface operations began in 1972. The current operator has been mining on the property since 2004. Open pit geometry is based on highwalls (pit slopes

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High wall slope stability assessment of open pit coal mine ...

recommendations for bench parameters and final pit slope stability related to disturbed area of the south side high wall slopes of the mine is discussed in this paper. Keywords: Slope stability, Open pit mining, Geotechnical studies and Numerical analysis 1. Introduction: An opencast coal mine is being operated by Singareni Collieries Company ...

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Developing Safe Mine Re-Entry Plans Using RS2- Case Study

Then, forward-analysis was used to model two scenarios for safe re-entry to resume mining. Open Pit Mine South Highwall. The south highwall of this mine was about 60m high and consisted of interbedded sediments including sandstone, siltstone, shale, mudstone, limestone and conglomerate.

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Prediction of slope failure in open-pit mines using a ...

Slope collapse is a critical hazard in open-pit mines as it can be of any scale, small or large, and directly affect people, equipment, and production processes (Fig. 1).Therefore, analysis and ...

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DESIGN CONSIDERATIONS FOR THE DAMANG OPEN PIT …

International Symposium on Stability of Rock Slopes in Open Pit Mining and Civil Engineering Jeff Price _____ Page 242 single ramp on the East wall and includes a single switch back. The ramp only passes beneath the west wall near the current pit floor. 3 SITE CONDITIONS The mine site is located in south western Ghana, close to the town of ...

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Groundwater Level Estimation for Slope Stability Analysis ...

sites. Especially in open pit mining, the presence of surface and groundwater in landslide and slope drift triggers stability problems. In this study, it was aimed to estimate the groundwater situation and level in the region for an open coal mine slope analysis in Amasya-Merzifon location.

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Mine Water Risk in Open Pit Slope Stability

Open pit slope in some timt PFS - Potential failure surface OPEN PIT SLOPE ----_ SANDSTONE '. POTENTIAL FAULT Figure 7. Section of typical slope in open pit Bracan About 10 million cubic meters of rock material is permanently being moved on the nonh slope of the Smreka iron open pit, (Figure 8). For the last six-years-period it was

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Open Pit Mining - an overview | ScienceDirect Topics

The surface mining methods are: (i) open pit mining, (ii) drift mining, (iii) slope mining, (iv) contour mining, and (v) auger mining. The characteristic that distinguishes open pit mining is the thickness of the coal seam insofar as it is virtually impossible to backfill the immediate mined out area with the original overburden when extremely ...

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Safety Evaluation on Slope of Saindak Open-pit Mine

The lithology of slope was mainly sericite powder sandstone, propylite sandstone rock in Saindak open-pit mine, so evaluating value of safety level of rock type was taken 0.5. Through membership functions, membership grade of sticking

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Monitoring and Analysis of Dynamic Response for Open-Pit ...

The stability of open-pit mining is a hot issue in geotechnical engineering. A mining railroad is in operation on the slope where the east exhaust inclined shaft and the east sand injection inclined shaft on the Laohutai Mine are located, and it was necessary to determine whether railroad vibration would have an impact on the safety of the inclined shafts.

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