弱冲击倾向性煤层冲击地压监测预警及防治

Monitoring,early warning and prevention of rock burst in coal seam with weak bursting liability

冲击地压的预警与防治研究对于增强保障工作面安全高效生产具有重要意义。为了对冲击地压的防治提供理论依据,本文以小庄煤矿40205工作面安全开采为背景,在明确开采深度及煤层冲击倾向性的基础上,从冲击地压影响因素、冲击地压监测及预警工程、预卸压措施实施等方面进行了综合分析。通过运用微震监测、地音监测和采动应力等预警方法,结合迎头预卸压、帮部及底板大直径卸压钻孔的防冲措施,可以达到冲击地压监测预警及防治的目标,满足矿井安全生产的需要。

The research on early warning and prevention of rock burst is of great significance for ensuring the safety and efficient production of working face.In order to provide a theoretical basis for the prevention and control of rock burst,taking the safe mining of the 40205 working face in Xiaozhuang Coal Mine as the background,on the basis of clarifying the mining depth and the rock burst tendency of coal seams,the impact factors of rock burst,the monitoring and early warning engineering of rock burst,and the implementation of pre-pressure relief measures were comprehensively analyzed.By using early-warning methods such as microseismic monitoring,geosound monitoring and mining stress monitoring,combined with the anti-burst measures of head-on pre-relief,large-diameter pressure-relief drilling holes in the side and floor,the goal of monitoring,early-warning and prevention of rock burst can be achieved,and meet the needs of mine safety production.