sandstone open pit mining slope

Safety Evaluation on Slope of Saindak Open-pit Mine

Safety Evaluation on Slope of Saindak Open-pit Mine Huang Zhiana, Zhao Guanjuna, Zhang Yinghuaa,*, Gao Yukuna, ... 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 force of slope rock and angle of

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

01/03/2013  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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Analysis of a complex toppling-circular slope failure ...

23/06/2010  This technical note describes a complex failure that occurred in an open-pit mine in Valencia (Spain). The failure, which was analysed and interpreted in accordance with the local geology, occurred in a slope comprised of a limestone rock mass in the upper part and a claystone–sandstone sedimentary formation in the lower part.

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(PDF) Evaluation of open pit mine slope stability analysis

01/08/2011  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

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SLOPE STABILITY ANALYSIS FOR OPEN PITS 1

In 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 clean-ups . 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% of ...

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PREDICTION OF SLOPE FAILURE AT LETLHAKANE MINE WITH THE ...

Deepening of the pit and mining of Sandstone waste rock has brought about geotechnical challenges, the most critical being slope stability. In order to manage the slope failure risk better, a Geomos slope monitoring system has been installed at the mine. The benefits of having an automated monitoring system have already been realized by the mine. Slope stability monitoring at Letlhakane mine ...

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Open pit mining - SlideShare

31/07/2017  Open-pit mines An open-pit mine is a mine that resides at the ground’s surface from which ore can be extracted. Although the mine is an open pit, some excavation is required. Open-pit mines are used to extract ores such as coal, copper, gold, iron, and aluminum. When an open-pit mine is developed, there are a number of environmental, safety, and cost-related factors to consider,

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SLOPE STABILITY PRISM MONITORING: A GUIDE FOR PRACTISING ...

slope angles for economic gain, mining slope angles steeper than design or ignoring the presence of weak geological structures may seriously increase the likelihood of slope instability leading to slope failure and possible mineral loss (sterilisation), property damage, mine closure, accidents and fatalities. It is not the objective of slope design to eliminate all slope instability, as slope ...

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(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

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SLOPE STABILITY ANALYSIS FOR OPEN PITS 1

In 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 clean-ups . 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% of ...

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Slope Failure Behaviour Analysis in Open Pit Coal Mining

Increasing the depth of an open pit coal mine also increases the possibility of slope failure in the low wall and high wall area which can cause disruption of mining activities. Slope failure on the low wall is generally caused by the presence of weak rock layers below the rock mass which act as a sliding plane. Poor surface water management, saturated slopes and excavation at the foot of the ...

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Movement and failure law of slope and overlying strata ...

Weathered sandstone ... The slope stability under underground mining of Anjialing open-pit mine in Pingshuo, J. China Coal Soc., vol. 33 (pg. 148-152) Google Scholar. OpenURL Placeholder Text Cheng. J W, Liu. F Y, Li. S Y. , 2017. Model for the prediction of subsurface strata movement due to underground mining, J. Geophys. Eng., vol. 14 (pg. 1608-1623) 10.1088/1742-2140/aa8238. Google Scholar ...

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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 239 DESIGN CONSIDERATIONS FOR THE DAMANG OPEN PIT EXPANSION J. Price1, A. Haines1, I. Baidoo2, O. Varaud2 1: SRK Consulting, Perth, Australia; 2: Abosso Goldfields, Damang, Ghana ABSTRACT Abosso Goldfields Limited (AGL) is in the process of developing an expansion of

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Study on the Ground Movement in an Open-Pit Mine in

The combined surface and underground mining method is typically used in an open-pit mine for better production and profits. However, the improved scale of mining operations at the combined mining conditions results in even more intensive strata movement and massive ground damages. This paper assesses the progressive development of the characteristics of roof movement with the longwall face ...

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IMPLEMENTATION OF REAL TIME GEOTECHNICAL MONITORING

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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Pit wall optimisation and effective wall management ...

to understand if the rock mass can support the steep slope strategies. The Invincible Open Pit is known for fair to good quality rocks and high porewater pressures. It was decided to change the slope configuration by adopting 20 m batters instead of 15 m, and to deepen the pit according to the experience gained with the slope from interim ‘staged’ pit walls. However, conducting drilling ...

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

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. These sediments dipped into the highwall between 50 and 65 degrees. There were also two parallel faults that ran obliquely into the wall at the toe of the failed slope. Radar monitoring of the south ...

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SLOPE STABILITY PRISM MONITORING: A GUIDE FOR PRACTISING ...

slope angles for economic gain, mining slope angles steeper than design or ignoring the presence of weak geological structures may seriously increase the likelihood of slope instability leading to slope failure and possible mineral loss (sterilisation), property damage, mine closure, accidents and fatalities. It is not the objective of slope design to eliminate all slope instability, as slope ...

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SLOPE STABILITY ANALYSIS FOR OPEN PITS 1

In 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 clean-ups . 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% of ...

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Movement and failure law of slope and overlying strata ...

Weathered sandstone ... The slope stability under underground mining of Anjialing open-pit mine in Pingshuo, J. China Coal Soc., vol. 33 (pg. 148-152) Google Scholar. OpenURL Placeholder Text Cheng. J W, Liu. F Y, Li. S Y. , 2017. Model for the prediction of subsurface strata movement due to underground mining, J. Geophys. Eng., vol. 14 (pg. 1608-1623) 10.1088/1742-2140/aa8238. Google Scholar ...

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A COMPLEX GEOTECHNICAL MODELLING OF AN OPEN PIT SLOPE ...

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. Prior to reaching ...

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DESIGN OF OPTIMUM SLOPES FOR SAFETY AND CONSERVATION

Figure 1: Benches in a typical opencast mine Slope stability is a major problem in opencast mines. Slope stability in a large scale open pit mining operation is a matter of concern for the mine management so as to establish safety throughout the life of the mines. Again the profitability of the open pit mines is dependent to a large extent on the use of steepest pit slopes possible, provided ...

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

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. These sediments dipped into the highwall between 50 and 65 degrees. There were also two parallel faults that ran obliquely into the wall at the toe of the failed slope. Radar monitoring of the south ...

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Slope Stabilization in an Open Pit Mine

Slope Stabilization in an Open Pit Mine by Michael Keienburg T he government of the Republic of Botswana and De Beers Centenary AG own the Debswana Diamond Company in equal share. Debswana Diamond Company is the world’s leading diamond producer by value and quantity. Debswana has played a significant role in the transformation of Botswana’s economy. It is the largest

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The importance of structured slope monitoring in the ...

Slope movement is most common in open-pit mines. A number of mines, where slope movement is detected, ... an integral part of any open-pit mine operation. According to the 2013/14 Annual Report of the Department of Mineral Resources (DMR) [5], a number of fatalities occurred at mines in South Africa. These are listed per classification in Table 1. Geomatics Indaba Proceedings 2015 – Stream 2 ...

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SLOPE STABILITY PRISM MONITORING: A GUIDE FOR PRACTISING ...

slope angles for economic gain, mining slope angles steeper than design or ignoring the presence of weak geological structures may seriously increase the likelihood of slope instability leading to slope failure and possible mineral loss (sterilisation), property damage, mine closure, accidents and fatalities. It is not the objective of slope design to eliminate all slope instability, as slope ...

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Slopestability - SlideShare

06/05/2011  Figure: Typical slope failure and relationships between critical slope heights and slope angles Factors Affecting Slope StabilityMining Method and Equipment Generally there are four methods of advance in open cast mines. They are: strike cut- advancing down the dip strike cut- advancing up the dip dip cut- along the strike open pit working • The use of dip cuts with advance on the strike ...

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