特厚煤层综放工作面过设备硐室冲击地压综合防控技术  

Comprehensive Prevention and Control Technology of Rock Burst through Equipment Chamber in Fully Mechanized Caving Face in Extra-thick Coal Seam

作　　者：门鸿 贾增林 高永刚 杨皓博 武亮 MEN Hong;JIA Zeng-lin;GAO Yong-gang;YANG Hao-bo;WU Liang(Shaanxi Binchang Xiaozhuang Mining Co.,Ltd.,Binzhou 713500,China)

机构地区：[1]陕西彬长小庄矿业有限公司,陕西彬州713500

出　　处：《煤炭技术》2021年第10期23-26,共4页Coal Technology

摘　　要：针对特厚煤层综放开采过程中的冲击地压防控难题,对40309综放工作面在过设备硐室期间工作面超前范围内煤岩体应力构造进行研究分析并制定出可行的技术方案。结果表明:对设备硐室超前施工190 m长钻孔,加强煤体内部松动,减小了工作面前方高应力集中区;采用"侧向斜切进刀法"采煤工艺和"单体+木点柱"支护方式,减小推采过程中空顶面积及确保设备硐室顶板稳定;ARES-5E地音监测系统对4月28日-5月2日内煤岩体内部能量变化进行实时监测,最高能量达到8 079 275 J。以上3种防控技术的实施,将原计划工期缩短3 d,并安全推采通过。Aiming at the problem of prevention and control of rock burst in the process of fully mechanized caving mining in extra-thick coal seams, the stress structure of coal and rock mass in the advanced range of the 40309 fully mechanized caving face during the passage of the equipment chamber was studied and analyzed, and feasible technical solutions were developed. The results show that: the equipment chamber was constructed in advance with a 190 m long borehole to strengthen the internal loosening of the coal body and reduce the high stress concentration area in front of the working face;the coal mining process were adopted by the "lateral oblique cutting method" and the "single +wood point pillar" support method, which reduces the area of the empty roof during the pushing process and ensures the stability of the roof of the equipment chamber;the ARES-5 E geophone monitoring system monitors the internal energy changes of the coal and rock mass during the period from April 28 to May 2 real-time monitoring shows that the maximum energy reaches 8 079 275 J. The implementation of the above three prevention and control technologies shortened the originally planned construction period by 3 days and passed them safely.

关 键 词：冲击地压 特厚煤层 灾害防治 预测预报 

分 类 号：TD324[矿业工程—矿井建设]