孤岛工作面冲击地压综合防治技术与实践

Isolated island working surface impact geostatic pressure synthesis preventing and controlling technology and practice

冲击地压严重威胁煤矿的安全生产,是开采过程中的灾害之一,在济三矿53下01(南)孤岛面地质开采环境特征的基础上,提出治理冲击地压的综合防治措施。制定以钻屑法为主,微震和应力在线监测相结合的监测方案,对冲击危险区域制定了超前顶板预裂压及大直径钻孔卸压相结合的治理措施。结果表明,应力集中区域为超前工作面30~60m左右,40~60m应力开始升高,15~20m时应力达到最大值。这一结果对类似工作面冲击地压防治具有重要借鉴与指导意义。

The impact geostatic pressure serious threat coal mine safety in production, mines one of in process disasters, in aids three ores 53 next 01（south） in the isolated island surface geology mining environment characteristic foundation, proposes the government impact geostatic pressure synthesis preventing and controlling measure.The formulation by the drilling law primarily, the monitor plan which the microseism and the stress online monitor unify, to attacked the dangerous region to formulate in advance the roof pre-splitting to press the government measure which and the large diameter drill hole release of pressure unified.The result indicated that, the stress concentration region for working surface 30~60m about, the 40~60m stress starts to elevate in advance, when 15~20m stress maximizing.This result has the important model and the guiding sense to similar working surface impact geostatic pressure preventing and controlling.