Stress state of rock mass during stoping under pit bottom in the presence of slide rocks on the pit bottom

Challenges for Development in Mining Science and Mining Industry

Baryshnikov, V.D.^1 ; Gakhova, L.N.^1

Chinakal Institute of Mining, Siberian Branch Russian, Academy of Sciences, Novosibirsk, Russia^1

关键词: Limiting deformation;    Mohr coulomb criterion;    Ore bodies;    Ore reserves;    Rock mass;    Stress state;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012007/pdf
DOI  :  10.1088/1755-1315/262/1/012007

来源: IOP

【 摘 要 】

The article studies influence of slide rocks on the bottom of Internatsionalny open pit mine on stress state of rock mass during stoping under the pit bottom. The stress distribution during extraction of ore reserves from the initial layer under the pit bottom is determined. The post-limiting deformation zones in ore body during formation of a crown pillar are delineated using the Mohr-Coulomb criterion. The authors give a predictive estimate of alteration in stress state of the crown pillar with the advance of stoping.