Influence of a Type of Rock Mass on the Stability of Headings in Polish Underground Copper Mines Based on Boundary Element Method

This paper presents the results of a numerical analysis impact rock mass geomechanical parameters on stability preparatory headings located within Legnica-Glogow Copper District. The shows calculations prepared for driven in two types with different strength and deformation parameters, which allow illustrating their influence safety mining performed underground copper ore mines. Numerical modeling was using Examine2D 7.0 software, plane strain state. simulations were an isotropic homogenous medium. medium described elastic model. calculated Hoek–Brown classification. Coulomb–Mohr criterion adopted as measure assessing effort. confirmed dependance between analyzed excavations parameters.