厚松散层薄基岩条件下巷道顶板离层控制技术研究  

Research on the Control Technology of Roadway Roof Detachment Under the Condition of Thick Loose Layer and Thin Bedrock

作　　者：马路 张明伟 李雪 田壮才 苏振豪 边思丞 谢传国 MA Lu;ZHANG Mingwei;LI Xue;TIAN Zhuangcai;SU Zhenhao;BIAN Sicheng;XIE Chuanguo(China Coal Xinji Energy Co.,Ltd.,Huainan 232001,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中煤新集能源股份有限公司,安徽淮南232001 [2]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116

出　　处：《河南科技》2024年第9期48-51,共4页Henan Science and Technology

摘　　要：【目的】以中煤新集集团刘庄煤矿某工作面为工程背景,研究厚松散层薄基岩煤层开采时巷道顶板离层控制技术。【方法】通过安装在巷道顶板的离层仪监测发现,巷道顶板发生离层,主要发生在7#(296 m)和8#(332 m)顶板离层仪位置,且7#位置在深层和浅层均有下沉,但8#位置只有深层下沉,且下沉量较大,说明顶板整体在深层位置下沉。【结果】第一次治理措施采用全断面喷浆和设置点柱,但治理效果不理想,顶板下沉没有得到有效控制。第二次治理措施采用长锚索注浆加固,治理后离层量明显放缓,顶板离层得到控制,治理效果明显。【结论】采用长锚索注浆加固可有效控制顶板离层,研究结果为厚松散层薄基岩条件下巷道顶板离层控制施工提供指导与借鉴。[Purposes]This study investigates the control technology of roadway roof separation during the mining of a thick loose bed and thin bedrock coal seam.The working face of Liuzhuang Coal Mine,oper⁃ated by China Coal Xinji Energy Co.,Ltd.,serves as the engineering background for this research.[Methods]The separation of the roof of tunnel was monitored using installed separators.The study fo⁃cused on the positions of the separators at 7#(296 m)and 8#(332 m)on the roof.Subsidence was ob⁃served in both deep and shallow layers at the 7#position,while only deep subsidence occurred at the 8#position,indicating overall sinking in deep layers.[Findings]The initial treatment measure involved full section grouting and setting point columns,but it did not effectively control roof subsidence.The second treatment measure involved long anchor cable grouting reinforcement,which significantly slowed down the separation layer after treatment.This approach effectively controlled the separation layer of the roof,demonstrating a clear treatment effect.[Conclusions]The study concludes that long anchor cable grout⁃ing reinforcement is an effective method for controlling roof separation in tunnels under thick loose layer and thin bedrock conditions.The research findings provide theoretical guidance and reference for the control of roof separation in similar mining scenarios.

关 键 词：薄基岩 巷道 顶板离层 注浆 

分 类 号：P634[天文地球—地质矿产勘探]