Numerical Simulation of Overburden and Surface Movements for Wongawilli Strip Pillar Mining

摘要

Based on the geological and mining conditions, the Wongawilli strip pillar mining plans were designed. And the supporting parameters of the branch entries and the mining technology were determined. Based on the numerical simulation analysis, the stress fields, displacement fields, and plastic zones generated by Wongawilli strip pillar mining were studied. The surface movement and deformation after mining were predicted. The damage degree of surface structures are within grade I specified in Chinese masonry structures.