千米深井沿空掘巷围岩控制技术研究  

Study on surrounding rock control technology of gob-side entry driving in kilometer deep mine

作　　者：苏生[1] 吴永涛 SU Sheng;WU Yong-tao(Zhujixi Coal Mine of Zhujixi Branch of Wanbei Coal Power Group,Huainan,Anhui,232097)

机构地区：[1]皖北煤电集团朱集西分公司朱集西煤矿,安徽淮南232097

出　　处：《煤炭科技》2020年第3期1-3,共3页Coal Science & Technology Magazine

基　　金：煤炭资源与安全开采国家重点实验室自主研究课题基金资助项目(SKLCRSM08X01)。

摘　　要：针对朱集西煤矿11502工作面运输巷顶板离层量大、煤柱帮肩窝及帮脚内移、底鼓严重等围岩大变形难题,在分析深井高应力沿空掘巷围岩大变形原因后,提出一次高强预应力支护技术及高强稳定型支护方法,强调锚杆索高预应力支护及二次预紧。现场试验后,围岩变形量减小,巷道空间得到较好维护,表明该锚网支护技术合理。Aiming at the problem of large roof separation value,humeral pits and strong ingression of at the side of coal pillar,floor heave of 11502 working face haulage gate in Zhujixi Mine,after analyzing the reasons of large deformation of high stress gob-side entry driving in deep mine,the primary supporting of high prestress technique and stable support method were proposed,which emphasized the part of anchor cable high prestress supporting and the secondary pre-tensioning method.Based on site tests,the surrounding rock deformation has become smaller,and provides good maintenance of roadway space,which identifies the rationality of bolting with wire mesh technology.

关 键 词：沿空掘巷 高预应力 二次预紧 锚网支护 

分 类 号：TD323[矿业工程—矿井建设]