摘要
在开展多个工作面实际探测经验的基础上,对PASAT-M型微震探测系统的性能和原理进行论述,以宽沟煤矿I010201工作面为探测现场,针对工作面前方上部I010405开切眼区域爆破解危后应力分布状况进行探测,初步构建了基于地震波的波速异常系数和波速梯度两个参数作为应力集中程度主要判据的判别准则。探测结果表明:根据探测结果并结合判别准则对应力集中程度进行划分的结果与现场状况基本相符,为保证工作面安全过开切眼阶段提供了有力的参考,同时验证了利用PASAT探测技术能够对现场卸压解危措施的实施和效果进行指导和检验。
Based on actual experience in the exploration on several working faces,The paper discussed the principle and performance of PASAT-M type seismic detection system, taking 1010201 working face of coal mine as detection field, through the detection of the regional stress distribution after the dange was eliminated when upper 1010405 regional cutting-hole blasting,coefficient and velocity anomaly the velocity gradient of seismic wave were initially constructed as the criterion of stress concentration degree criterion.The results show that, results based on the detection and the concentration degree obtained by criterion of stress are basically consistent with the field status, and has provided a strong reference to ensure the safety of the working face passing through cutting holes regions,and verified the application of PASAT detection technology can provide guidance and test on the implement and effects of danger elimination for field presssure relief.
出处
《煤炭科技》
2017年第2期85-88,共4页
Coal Science & Technology Magazine
关键词
冲击地压
应力场
微震探测
应力集中
rock burst
stress fiield
seismic detection
stress concentration
