摘要
因诱发冲击地压影响因素众多,相应的冲击类型划分多样,对于顶板型冲击地压,在已知岩性的情况下其断裂释放能量约为常数,顶板断裂特征一般遵循低位到高位的变化特点,根据采空区顶板垮落“三带”高度和微震定位震源位置,统计每一循环顶板能量释放情况,找出能量释放的正常统计量,动态对比分析回采期间每一循环内顶板能量释放情况,评价后期一循环内回采期间的冲击危险性。
Because there are many influencing factors to induce rock burst,the corresponding types of rock burst are diverse.For the roof rock burst,the energy released by the fracture is about constant when the lithology is known,and the characteristics of the roof fracture generally follow the change from low to high.According to the height of three zones of roof collapse in goaf and the location of microseismic source,the roof energy release in each cycle is counted,and the normal statistics of energy release are found out.The roof energy release in each cycle during the mining period is dynamically compared and analyzed,and the impact risk during the mining period in the next cycle is evaluated.
作者
丁传宏
史矿民
DING Chuan-hong;SHI Kuang-min(Shanghai Datun Energy Co.,Ltd.,Xuzhou 221000,China)
出处
《煤炭科技》
2021年第2期91-95,共5页
Coal Science & Technology Magazine
