海鸿煤矿5~#煤层下分层工作面回采巷道布置研究  

Study on the Layout of Roadway in the Working Face of Lower Layer in 5~# Coal Seam in Haihong Coal Mine

作　　者：梁冰[1] 李存洲 汪北方[3] 孙维吉 迟海波[3] LIANG Bing;LI Cunzhou;WANG Beifang;SUN Weiji;CHI Haibo(College of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China;Baode Coal Mine,CHN Energy Shendong Coal Group Co.,Ltd.,Xinzhou 036600,China;Mining College,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学力学与工程学院,辽宁阜新123000 [2]国家能源集团神东煤炭集团公司保德煤矿,山西忻州036600 [3]辽宁工程技术大学矿业学院,辽宁阜新123000

出　　处：《矿业安全与环保》2019年第6期20-24,共5页Mining Safety & Environmental Protection

基　　金：国家重点研发计划项目(2016YFC0801404);国家自然科学基金项目(51704139)

摘　　要：针对厚煤层下分层回采巷道面临压力大、维护难的问题,选取海鸿煤矿为工程背景,采用理论分析、数值模拟和现场试验相结合的方法,对该煤矿5#煤层下分层52102工作面回采巷道布置方式进行研究。对比分析了厚煤层下分层回采巷道3种常见的布置方式(垂直式、内错式、外错式),结合这3种巷道布置方式下围岩力学响应的数值模拟结果,确定52102工作面回采巷道最优布置方式为内错式,并基于此构建顶板力学简化模型,推导出巷道受力、弯矩数学表达式。分析了巷道围岩稳定性,并开展现场实测试验,结果表明:52102工作面回采巷道采用内错式布置效果良好,巷道围岩不均匀应力是影响其稳定性的主要因素,在内错距为9 m时巷道围岩变形能够得到有效控制。研究结果对于厚煤层下分层回采巷道合理布置具有一定的指导意义。In view of the problem of high pressure and difficult maintenance of the roadway when mining thick coal seam in lower layer, Haihong Coal Mine was selected as the engineering background, by combining theoretical analysis, numerical simulation and field test, the layout of the 52102 mining roadway of lower layer in 5 # thick coal seam of Haihong Coal Mine was studied. Based on the comparison and analysis of three common layout modes of the roadway when mining thick coal seam in lower layer (vertical, internal dislocation and external dislocation), combined with the simulation results of mechanical response of surrounding rock under these three kinds of roadway layouts, it was determined that the optimal layout mode of mining roadway in 52102 working face was internal dislocation. Based on this, a simplified model of roof mechanics was constructed to derive mathematical expressions of roadway forces and bending moments. The stability of roadway surrounding rock was analyzed and field test was carried out. The results show that the effect of internal dislocation layout of mining roadway in 52102 working face is good, and the non-uniform stress of surrounding rock of roadway is the main factor influencing the stability of roadway. The deformation of surrounding rock can be effectively controlled when the internal dislocation distance is 9 m. The results of the study have certain guiding significance for rational layout of roadway when mining thick coal seam in lower layer.

关 键 词：厚煤层 分层开采 巷道布置方式 不均匀应力 错距 围岩控制 

分 类 号：TD353[矿业工程—矿井建设]