Modeling stress_strain state of rock mass under mining of complex-shape extraction pillar

Geodynamics and Stress State of the Earth's Interior 2017

Fryanov, V.N.^1 ; Pavlova, L.D.^1

Siberian State Industrial University, Novokuznetsk, Russia^1

关键词: Coal face;    Complex shapes;    Flat seams;    Geomechanical parameters;    Longwalls;    Short wall mining;    Stress strain state;    Variable length;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/134/1/012020/pdf
DOI  :  10.1088/1755-1315/134/1/012020

来源: IOP

【 摘 要 】

Based on the results of numerical modeling of stresses and strains in rock mass, geomechanical parameters of development workings adjacent to coal face operation area are provided for multi-entry preparation and extraction of flat seams with production faces of variable length. The negative effects on the geomechanical situation during the transition from the longwall to shortwall mining in a fully mechanized extraction face are found.