PASAT-M探测系统在冲击地压解危效果评价中的应用

The application of PASAT-M detection system in the evaluate of rock-burst relief

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1930煤矿35311工作面为探测现场,针对工作面上覆坚硬厚顶板进行深孔断顶爆破解危后波速分布状况进行探测,并根据探测结果评价了顶板深孔爆破后冲击地压的解危效果。探测结果表明:顶板深孔爆破孔区域波速分布较为均匀,未爆破区域应力分布存在应力集中区,坚硬顶板周期性垮落,没有形成大面积的悬顶。本文为类似的坚硬厚顶板冲击地压防冲解危评价工作提供了有力的参考,同时验证了利用PASAT-M探测技术能够对现场卸压解危效果检验的可行性。

Carried out in multiple working face,on the basis of actual detection experience of PASAT -M, the discusses the performance andprinciple of seismic detection system. Based on 1930 coal mine 35311 face detection field, aimed at the working plane strong thick roof fordeep hole broken roof blasting wave velocity distribution after detection, and evaluated according to the results of the detection of roof afterdeep hole blasting danger relieving effect of percussive ground pressure. Detection results show that the roof of deep hole blasting hole wavevelocity distribution is relatively uniform, stress distribution in the zone of blasting stress, high, hard roof periodic caving, not form a largeoverhang. This article for the similar strong thick roof impact ground pressure impingement danger relieving evaluation provides a powerfulreference, at the same time, the feasibility of using PASAT - M detection technology to verify the effect of the discharge pressure of the site isverified.