复杂围岩巷道半刚性全封闭复合衬砌支护技术  

Semi- rigid and Full Enclosed Composite Lining Support Technology of Roadway Under Complex Surrounding Rocks

作　　者：邹久群[1] 桑普天 庞建勇[1] 张恒亮[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]江苏省盐城市规划市政设计院有限公司,江苏盐城224002

出　　处：《煤炭科学技术》2014年第2期30-33,共4页Coal Science and Technology

基　　金：安徽省高校省级自然科学基金重点资助项目(KJ2011A099);安徽省淮南市科技专项资金资助项目(2011A07911)

摘　　要：针对潘三矿西二石门四联络巷至五联络巷段间巷道变形破坏严重、原锚网喷及架棚支护失效问题,通过分析可知该段巷道的变形原因为巷道围岩破碎严重,节理裂隙发育,矿山压力大,构造复杂,埋深相对较大,服务时间长,且受周边开采影响大。基于此,提出在复杂围岩条件下的半刚性全封闭复合衬砌支护方案,充分利用塑性状态硐室围岩自身承载力适当迟缓支护。工程监测表明:巷道50 d后变形趋于稳定,变形速率约0.1 mm/d,围岩压力相对均匀稳定,混凝土和钢筋网架受力都有改善,达到良好支护效果。According to the serious deformation and failure of the roadway between the No.4 to No.5 crossheading in the west No.2 cross- cut of Pansan Mine ,the deformation mechanism were analyzed which involved the broken surrounding rock, fractured joints, high ground stress, complex structure, great mining height, long service time, and strongly influenced by the surrounding mining of the roadway. Based on those reasons, the semi-rigid and fully enclosed composite lining was put forward under the condition of complex surrounding rock, which took full advantages of surrounding rock carrying capacity. The industrial test showed that the speed of deformation was about 0. 1 mm/day, and the deformation tended to stable after 50 days, the stress of surrounding rock became more stable, the stress condition of rebar and concrete was improved, and the good supporting effect was achieved.

关 键 词：复杂围岩 复合衬砌 三心拱网架 围岩支护 

分 类 号：TD353[矿业工程—矿井建设]