摘要
针对近距离煤层房柱式采空区条件下长壁开采中容易发生顶板大面积突然垮落进而造成强动压灾害的问题,以元宝湾煤矿为研究现场,采用数值模拟手段分析了上覆4号煤房柱采空区突然大面积垮落的可能性,提出了以爆破联合分段定向水压致裂为主要防治手段、以微震监测系统为主要监测手段的顶板动压灾害防治一体化技术,取得了良好的经济和社会效益,并为类似矿井的安全回采提供了实践参考。
To strengthen dynamic pressure disaster that induced by large area roof collapse during longwall mining under room and pillar goaf with close distance coal seams, it taking Yuanbaowan coal mine as studying field, and then possibility of room and pillar goaf collapsed suddenly of upper No. 4 coal seam, so roof dynamic pressure disaster control integrated technology was put forward, which include the main control technology of blasting and sectional directional hydraulic fracturing, the main monitoring method of micro seismic monitoring system, and achieved good economic and social benefits, and it referenced for similar situation.
作者
庞立宁
汪月伟
安帅
张喜
温新明
李国斌
PANG Li-ning;WANG Yue-wei;AN Shuai;ZHANG Xi;WEN Xin-ming;LI Guo-bin(Coal Mining & Designing Department, Tiandi Science & Technology Co., Ltd., Beijing 100013, China;Mining Institute, China CoalResearch Institute, Beijing 100013, China;Shanxi Huayu Energy Co.,Ltd.,Zhongmei Group, Shuozhou 036900, China;Shanxi Shuozhou Shanyin Jinhaiyang Yuanbaowan Coal Mine Co., Ltd., Shuozhou 036900, China)
出处
《煤矿开采》
北大核心
2018年第6期89-93,共5页
Coal Mining Technology
基金
国家自然科学基金面上项目:多因素耦合作用下厚煤层大采高综采面极限开采强度确定方法研究(51474128)
国家自然科学基金青年科学基金项目:基于浅埋深采场岩层破坏时间效应的顶板切落演化时空序列研究(51604152)
关键词
近距离煤层
房柱采空区下
强动压灾害
分段定向水压致裂
微震监测
close distance coal seams
under room and pillar goaf
strengthen dynamic pressure disaster
sectional directional hydraulic fracturing
micro seismic monitoring
