Zhang Kexue Huang Zenghua Zhang Jinhu Wang Xuming Ma Zhenqian Yang Yingming
Beijing Tiandi-Macro Electro-Hydraulic Control System Company Limited State Key Lab of Coal Resources and
Safety Mining,China University of Mining and Technology ( Bejing) Department of Mining and Design,Tiandi Science
and Technology Company Limited

针对某矿Ⅱ水平第二部带式输送机大巷由断层突水引起的巷道破坏问题,通过对工程地质条件的综合分析,总结了巷道在原支护下以及修复后的破坏特征,并基于应力-渗流耦合效应分析了巷道底板突水机理,最后探讨了水-岩作用对泥质岩体的弱化作用。结果表明:巷道围岩以块状泥岩为主,伊利石质量分数90%,在高压渗流水的作用下体积可增大50%~60%,极易引起岩体的软化和泥化,造成巷道失稳。在此基础上提出了置换泥化岩体、多层次锚杆+钢丝绳+钢筋网+喷射混凝土联合支护、开挖卸压槽和反复注浆等控制技术,取得了预期的效果。

According to the mine roadway failure problem occurred by the fault water inrush in the second belt conveyor roadway of No. II level in a mine,with the com prehensive analysis on the engineering geological conditions,the paper summarized the failure features of the mine roadway under the previous support and after the repai r. Based on the stress- seepage coupling effect,the paper analyzed the floor water inrush mechanism of the mine roadway and finally the paper discussed the water- rock a ffected to the weaken role of the muddy rock. The results showed that the surrounding rock of the mine roadway mainly was lumpy mudstone and the ilite was taken 90%. Under the role of the high pressurized seepage water, the volume of the mudstone would be increased by 50% ~ 60%,the mudstone would easily be soft and muddy and the instability of the mine roadway could be occurred. Based on the circumstances,the control technology including the muddy rock replacement,multi layer bolt + steel rope +「 einforced bar net + shotcreting combined support,excavation of the pressure released slot,repeated grouting and others was provided. The expected effect was obtained a nd the technology could provide certain reference significances to the mine roadway with the similar condition.

国家高技术研究发展计划(863计划)资助项目(2013AA06A410)；国家重点基础研究发展计划(973计划)资助项目(2010CB226801)；国家自然科学基金资助项目(51174213)；北京市科技计划重大科技成果转化落地培育资助项目(Z141100003514025)；中国煤炭科工集团重点资助项目(2012ZD001)；