阳泉矿区保安煤矿15号煤层冲击倾向性试验研究

Experimental Study on No.15 Coal Seam Impact Tendency of Baoan Coal Mine in Yangquan Mining Area

对冲击倾向性的研究能有效地预防冲击地压的发生,对于煤矿的开采工作具有重大的实际意义。在全面、系统归纳总结分析保安煤矿矿井已有地质资料的基础上,现场井下进行15号煤层的取样。对煤样的单轴抗压强度、动态破坏时间、冲击能量指数、弹性能量指数等冲击倾向性指标进行了试验和分析,综合判定15号煤层的冲击倾向性属于I类,无冲击倾向性。以上述研究结果为基础,结合保安煤矿15号煤层的实际生产条件,为该煤层开采延伸工程中的矿压安全管理提供技术依据。

The research on impact tendency can effectively prevent the occurrence of rock burst,which is of great practical significance for coal mining.On the basis of comprehensive,systematic and inductive analysis of the existing geological data of Baoan Coal Mine,the coal rock samples of No.15 coal seam were collected underground.The impact tendency indexes of coal samples were tested and analyzed,such as uniaxial compressive strength,dynamic failure time,impact energy index and elastic energy index.It was comprehensively determined that the impact tendency of No.15 coal seam belonged to class I and had no impact tendency.Based on the above research results,combined with the actual production conditions of No.15 coal seam in Baoan Coal Mine,the technical basis for the safety management of mine pressure in the extension project of the coal seam was provided.