Abstract
Surface mines composite slope deformation mechanisms and stress distribution
Highlights
MethodsDescription and interpretations of the mechanical and stress computational model for a waste dump loading in the formation of a composite slope on the basis of the theory of plasticity and elasticity
The failure mechanism of composite slope is a complex phenomenon in that the removal of the overburden to recover the ore induces plastic and elastic deformation in the rock mass geometry and the construction of the waste dump near the mining limit induces additional stresses within the rock mass [1]-[4]
Considering the smoothness of transportation flow, reduction in haul distance and lower transportation cost, the outer dump is generally located near the mining limit; the issue of validity of the concept for understanding the influence of the dump position and its interaction with key geometrical parameters of both the pit slope and the waste dump may lead to disastrous failures and landslide [11]-[13]
Summary
Description and interpretations of the mechanical and stress computational model for a waste dump loading in the formation of a composite slope on the basis of the theory of plasticity and elasticity. Numerical and analytical simulations for composite slope stress distribution. The numerical simulation shows that as the dump is moved away from the point of application the settlement induced by the dump is larger beneath the dump and decreases away from the dump, the stress reduces. This highlights the sensitivity in simulating the effect of the waste dump at different position within the computation analysis of a composite slope stability problem. The results effectively describe the stress distribution mechanisms and stability analysis of composite slopes and provides basis for the preliminary design and stability of composite slopes.
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