西川煤矿回采巷道底鼓机理及其控制技术研究

Study on Mining Floor Heave Mechanism and Control Technology in Xichuan Coal Mine

针对西川煤矿回采巷道采动期间出现严重底鼓的难题,综合采用围岩位移监测、理论分析和数值模拟计算的方法,揭示了巷道底鼓的主要影响因素——工作面移动支撑压力。在此基础上提出对已发生底鼓的巷道进行起底翻修和对未发生底鼓巷道打底板锚索和锚杆的处理方法,有效解决了西川煤矿回采巷道底鼓严重的难题,对实际生产具有一定的指导意义。

In view of the severe floor heave problem during the mining in Xichuan Coal Mine, the methods of surrounding rock displacement monitoring, theoretical analysis and numerical simulation are comprehensivly used, the main factors of floor heave are revealed——moving support pressure of working face. The handling methods of overhaulling roadway that has caused floor heave and placing motherboard bolt and anchor in roadway that has not caused floor heave are put forward, the severe floor heave problem of mining roadway is effectively solved in Xichuan Coal Mine, it has a certain guiding significance for the actual production.