祁东煤矿7_130综采面压架突水原因分析  

Analysis on cause of support crushing and water inrush at No.7_130 fully mechanized mining face in Qidong Coal Mine

作　　者：林青[1] 

机构地区：[1]皖北煤电集团祁东煤矿,安徽省宿州市234000

出　　处：《中国煤炭》2012年第12期44-47,共4页China Coal

基　　金：国家自然科学基金资助项目(50974116)

摘　　要：祁东煤矿7130综采面在邻近第四系松散层底部砾石含水层("四含")采煤过程中发生了4次压架事故,伴随压架还出现了异常的突水现象,经研究分析,7130综采面压架突水原因是由于"四含"岩层具有流动和侧向补给特性,可以持续传递表土层载荷,使得作用在基岩顶部的载荷较大,易导致一定覆岩条件的关键层结构由无含水层时的自下而上逐层破断变为有含水层时的整体破断,作用在支架上载荷异常增大。There happened four support crushing accidents with abnormal water inrush dur- ing mining by the gravel aquifer at the bottom of quaternary unconsolidated layer in No. 7130 full- y mechanized mining face. The research shows that the quaternary unconsolidated confined aqui- fer has the characteristics of liquidity and lateral replenishment, which can transfer the topsoil load to make the bedrock roof bear larger load, and lead to the overall breakage with aquifer of the key stratum with certain overburden condition but not the layer by layer breakage from below without aquifer, which results in the load on the support being abnormally increased, as is the cause of support crushing and water inrush accidents in No. 7130 working face.

关 键 词：松散层承压含水层综采工作面 压架突水 关键层 

分 类 号：TD323[矿业工程—矿井建设]