大埋深综采煤层沿空留巷变形联合控制技术  

Combined control technology of gob-side entry retaining deformation in large buried depth fully mechanized coal seam

作　　者：郭超 王汉青 李新旺 程立朝[2,3] GUO Chao;WANG Hanqing;LI Xinwang;CHENG Lichao(Jizhong Energy Fengfeng Group Wutongzhuang Mine,Handan 056200,China;School of Mining and Geomatics Engineering,Hebei University of Engineering,Handan 056038,China;Coal Resources Development and Construction Application Technology Research Center of Universities in Hebei Province,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]冀中能源峰峰集团梧桐庄矿,河北邯郸056200 [2]河北工程大学矿业与测绘工程学院,河北邯郸056038 [3]河北工程大学河北省高校煤炭资源开发与建设应用技术研发中心,河北邯郸056038

出　　处：《煤矿安全》2023年第8期90-98,共9页Safety in Coal Mines

基　　金：河北省自然科学基金资助项目(E2020402075,E2022402014);河北省高等学校科学技术研究资助项目(ZD2022074)。

摘　　要：为了解决大埋深综采煤层沿空留巷围岩变形问题,以梧桐庄煤矿182605工作面为工程背景,通过现场调研、理论分析与方案设计,提出了“巷道超前补强加固支护+切顶卸压爆破技术+高水材料沿空留巷巷旁支护”联合控制技术体系,并结合现场实测数据验证了该方案的可行性。工程实践表明:联合控制支护体系实施后,对巷道围岩的变形起到了有效控制作用,截止距离工作面开切眼293 m时,两帮移近量和顶底板移近量呈现先上升后逐渐减小,最终趋于平稳;受损单体液压点柱仅占比4.1%;该技术已成功实施沿空留巷640 m,巷道变形控制在允许变形范围内,整体留巷效果较好。In order to solve the problem of large deformation of surrounding rock in gob-side entry retaining in fully mechanized coal seam with large buried depth,taking the 182605 working face of Wutongzhuang Coal Mine as the engineering background,through field investigation,theoretical analysis and scheme design,a combined control technology system of"roadway advanced reinforcement support+roof cutting pressure relief blasting technology+high water material gob-side entry retaining support"is proposed,and the feasibility of the scheme is verified by field measured data.The engineering practice shows that after the implementation of the combined control support system,the deformation of the surrounding rock of the roadway has played an effective control role.When the cut-off distance is 293 m from the open-off cut of the working face,the convergence of two-side and the roof and floor convergence increase first and then decrease gradually,and finally tend to be stable.The damaged single hydraulic point column only accounts for 4.1%;the technology has been successfully implemented to retain 640 m roadway along goaf,and roadway deformation is controlled within the allowable deformation range,and the overall roadway retention effect is good.

关 键 词：大埋深 切顶卸压 高水材料 联合控制支护 沿空留巷 

分 类 号：TD353[矿业工程—矿井建设]