Study of deformation-failures zone of rock surrounding roadway driven along goaf under different stress conditions

摘要

The deformation-failures of rock surrounding roadway driven along goaf generally present differ ence under different tectonic stress and mining infection. The stress and displacement fields around roadway driven along goaf under different stress conditions were simulated using Flac-3D software, deformation-fail ures zone of rock surrounding roadway driven along goaf were plotted out with Safe Fractor (SF) and Distor tion Scale Factor (DSF) as the criterion, and the collective drawings of formation-failures zone were provid ed. According to the collective drawings, the formation-failures zone of identical geologic setting rock can be determined, a new idea is provided that different supporting decision can be adapt for various deformation failures based on the failures or deformation control.