ABSTRACT

Dump slope stability is an important activity in the life of an opencast mine. This is because of the safety to mine, machine and personnel as well as economic impact on production. In this paper, stability of an existing dump is analyzed using analytical method. The waste dump material properties are determined in the laboratory like the cohesion, angle of internal friction, permeability, bulk density, grain density, particle size distribution and in-situ moisture content. The stability of the dump slope is simulated for two extreme conditions like a very dry and a wet condition. Analysis shows that the effects of water on dump stability more prominent than its bulk density. In these situations, it is pertinent to use the slope stability measures or change the dump profile for better dump stability.

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