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Kapoor Chand

Mine dump slope stability and failure behaviour analysis under geo-mining condition using hybrid numerical modelling - p 667-676

Dump slope stability and failure behaviour analysis
under actual geo-mining conditions is tedious for mining
engineers. Therefore, the present study presents a novel
hybrid numerical modelling for dump slope stability
and failure behaviour analysis, from initiation and
transport to overburden (OB) deposition. Mixed and
broken material matrix slope stability was analysed using finite discrete element method (FDEM). The present
study used absorbing boundary conditions under gravity
force. The shear strength reduction approach was used
for slope strength analysis. Newton’s second law is incorporated to simulate rock boulder kinematics accurately during the progressive failure. The results of the
present study indicate that hybrid numerical modelling
can evaluate dump stability and simulate the complete
failure process, including crack initiation, propagation
in slope, failure surface, OB transport and deposition.
Finally, the role of mixed materials (soil and rock
boulders) in the dump slope stability and failure behaviour was analysed. FDEM is a powerful visualisation
tool for solving a numerical model under real geomining conditions. This will be helpful for the safe
working distance analysis from the dump slope toe.

Subjects--Facted Index Terms:
Geo-mining condition
hybrid numerical modelling
mine dump
progressive failure
slope stability