超前支承压力作用下的巷道围岩控制技术  

Surrounding Rock Control Technology of Roadway Under Advanced Abutment Pressure

作　　者：李敬凯 李青海 瞿衡哲 王鹤 崔亮 LI Jingkai;LI Qinghai;QU Hengzhe;WANG He;CUI Liang(School of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Yiyuan Lucun Coal Mine Co.,Ltd.,Zibo 256104,China)

机构地区：[1]山东科技大学矿业与安全工程学院,山东青岛266590 [2]沂源县鲁村煤矿有限公司,山东淄博256104

出　　处：《煤矿安全》2019年第10期98-102,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目（51604164）;山东省高等学校科技计划资助项目（J18KA185）

摘　　要：为解决鲁村煤矿东Ⅳ区主下山在超前支承压力影响下巷道变形剧烈的难题,综合采用理论计算、钻孔窥视、数值模拟和现场巷道变形观测等方法对围岩松动范围进行确定,对原有巷道支护方式进行优化设计。得出超前支承压力作用下主下山围岩松动范围为2.12m,在此基础上优化设计的"锚网(索)+钢带"支护方案能有效控制巷道围岩变形,满足现场生产需要。经工程实践证明,多种研究手段相结合能更准确地定位把握现场实际生产条件,能提出更有效的巷道支护方案,保证现场安全生产,节约支护生产成本。To solve the problem of severe deformation of roadway under the influence of advanced abutment pressure in the eastern IV district of Lucun Coal Mine,this paper uses the methods of theoretical calculation,borehole peep,numerical simulation and in-situ observation of roadway deformation to determine the range of surrounding rock loose range,and optimizes the original roadway support mode.It is concluded that the loose range of surrounding rock is 2.12 m under the action of advanced abutment pressure.Based on this,the optimized support scheme of"bolt-mesh-anchor+steel belt"can effectively control the deformation of surrounding rock of roadway and meet the needs of field production.Engineering practice has proved that the combination of various research methods can more accurately locate and grasp the actual production conditions on site,and can propose more effective roadway support scheme to ensure safety production on site and save the production cost of support.

关 键 词：超前支承压力 钻孔窥视 松动圈 优化设计 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]