关键词：全封闭U型棚架;复杂围岩;动压巷道;联合支护;锚网喷注;full closed U steel type arch support;complicated surrounding rock;dynamic pressure gateway;combined support;bolt-steel mesh-shotcreting
摘 要：针对淮南地区邹庄煤矿3024采区瓦斯抽放泵硐室的支护出现失稳变形这一情况,文章分析了支护失稳变形的破坏机理,提出了复杂围岩条件下的全封闭U型钢架及锚网喷注的联合支护方式,现场应用65d后支护变形趋于稳定,表明该支护形式在复杂围岩条件下能够有效控制动压巷道围岩变形.