Effect of Advancing Direction of Working Face on Mining Stress Distribution in Deep Coal Mine

Deep mining has become the normal state of coal mining; compared with mine shallow buried depth, consequent high level in situ stress and complex distribution have brought severe threats to stability stope surrounding rock roadway. In this research, taking 121304 working face Kouzidong Mine as engineering background, characteristics mining-induced under environment deep are analyzed by using on-site measurement original stress, establishing a theoretical model centered on middle section face, large-scale numerical calculation models for different advancing directions. It was found that conditions, maximum is 25.12 MPa, direction vertical. The advanced influence range about 150 m, abutment pressure presents three-peak characteristic front face. research results provide important guiding value mines similar geological conditions.