沿空留巷动压区锚索主动支护技术研究  

Study on Active Support Technology of Anchor Cable in Dynamic Pressure Zone of Gob-side Entry Retaining

作　　者：曹庆华 刘广伟 孙志强 徐学锋[2] 李宝富[2] CAO Qinghua;LIU Guangwei;SUN Zhiqiang;XU Xuefeng;LI Baofu(Juji Coal Mine of Henan Longyu Energy Co.,Ltd.,Yongcheng 476600,China;School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南龙宇能源股份有限公司车集煤矿,河南永城476600 [2]河南理工大学能源科学与工程学院,河南焦作454000

出　　处：《煤炭技术》2024年第7期27-31,共5页Coal Technology

基　　金：国家自然科学基金项目(51874121)。

摘　　要：为解决车集煤矿深部工作面高矿压条件下沿空留巷变形严重问题,根据2611工作面生产地质资料,采用经验计算和FLAC^(3D)数值模拟等方法开展矿压分析、大直径锚索主动支护数值模拟,由结果可知,车集煤矿2611工作面锚杆+普通锚索+大直径锚索加强支护手段支护效果远优于其他支护形式。通过工程实践:2611下巷沿空留巷动压段超前支承压力影响范围约50 m,工作面后约150 m,沿空留巷切顶卸压大直径锚索主动支护技术,适用于车集煤矿深部工作面沿空留巷支护,能够有效控制围岩应力,将巷道变形控制在合理范围内。In order to solve the serious problem of gob-side entry retaining under the condition of high mine pressure in Juji coal mine,according to the production geological data of 2611 coal mine,FLAC^(3D) numerical simulation method was used to numerically simulate the support methods such as no support,top cutting pressure relief and large-diameter anchor cable active support.It can be seen that 2611 coal mine was suitable for top cutting pressure relief.The cutting depth of 10 m,bolt+ordinary anchor cable+large diameter anchor cable reinforcement support method support effect was far superior to other forms of support.The engineering practice showed that the influence range of the leading abutment pressure in the dynamic pressure section of goaf retaining roadway in lower roadway 2611 was about 50 m,and about 150 m behind the working face.The active support technology of large-diameter anchor cable for goaf retaining roadway was suitable for the support of goaf retaining roadway in deep working face of Juji coal mine,which can effectively control the surrounding rock stress and control roadway deformation within a reasonable range.

关 键 词：沿空留巷 切顶卸压 大直径锚索 主动支护 

分 类 号：TD353[矿业工程—矿井建设]