摘要
为研究浅埋采动巷道围岩松动圈演化规律,保证煤矿地下水库的安全运行,以补连塔煤矿典型浅埋高强度综采面为工程背景,综合运用理论分析、数值模拟、现场实测等方法对采动影响下的矩形巷道受力变形特征进行了分析。研究表明:浅埋高强度采动巷道松动圈主要集中在两帮呈"凸"型发育,受采空区残余支承压力影响程度大于工作面超前支承压力,巷道煤柱侧松动范围较工作面侧严重;巷道在二次采动阶段受一次采动和回采稳定的叠加影响破坏最严重,为保证遗留煤柱长期稳定性提出了锚网喷联合支护方法。研究成果为煤矿地下水库安全运行及类似条件下巷道围岩控制提供了科学依据。
In order to study the broken rock zone evolution law of mining affected roadway in shallow coal seam and to ensure the safe operation of coal mine underground reservoir,a typical high-intensity fully-mechanized mining face of shallow coal seam in Bulianta Coal Mine was choosed as the project background,and the intergrated research methods include theoretical analysis,numerical simulation and field measurement were carried out to analyze the stress and deformation characteristics for the mining affected rectangular roadway. The results indicated that the broken rock zone was developing with convex type which mainly concentrated in both sides of the shallow highintensity mining roadway,and it was significantly affected by the side abutment pressure of goaf than the front abutment pressure of mining face,besides,the broken zone of pillar side was more serious than working face side in the roadway. The roadway was damaged worst at secondary recovery which impaction was combined with the mining and the recovery,and to ensure the long-term stability of the remaining coal pillars that the method of bolting and shotcreting with wire mesh was proposed. The research results provide a scientific basis for the safe operation of underground coal mine reservoir and the control of roadway surrounding rock with similar conditions.
作者
赵宾
梁宁宁
王方田
刘兆祥
ZHAO Bin;LIANG Ningning;WANG Fangtian;LIU Zhaoxiang(School of Mines, China University of Mining and Technology, Xuzhou 221116, China;State Key Laboratory of Coal Resources and Mine Safety,China University of Mining and Technology, Xuzhou 221116, China;Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, China University of Mining and Technology, Xuzhou 221116, China;State Key Laboratory of Groundwater Protection and Utilization by Coal Mining, Beijing 100011 ,China;Bulianta Coal Miae,Shendong Coal Group Co. ,Ltd. ,Ordos 017209, China)
出处
《煤炭科学技术》
CAS
北大核心
2018年第5期33-39,46,共8页
Coal Science and Technology
基金
煤炭开采水资源保护与利用国家重点实验室2016年开放基金课题资助项目(SHJT-16-30.13)
江苏省研究生科研与实践创新计划资助项目(SJCX17_0520)
关键词
浅埋巷道
松动圈
采动响应
围岩稳定性
煤柱坝体
roadway in shallow seam
broken zone
mining response
surrounding rock stability
coal pillar dam
