华亭煤矿软岩大巷底鼓成因及防治技术  

Analysis of Floor Heave of Main Roadway in Soft Rock and Its Prevention in Huating Colliery

作　　者：李殿国[1] 鞠文君[1] 魏东[1,2] 李前[1,2] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]甘肃华亭煤业集团公司,甘肃平凉744104

出　　处：《煤矿开采》2009年第5期43-45,共3页Coal Mining Technology

摘　　要：甘肃华亭煤矿二水平开拓大巷穿越含有大量的黏土类矿物的泥岩层,由于泥岩遇水膨胀和存在较大的构造应力作用,致使巷道底鼓严重。分析了底鼓成因,采用内层全断面锚网喷外层全断面浇筑钢筋混凝土碹的复合支护形式,取得了良好的支护效果。Main roadway of second level in Huating Colliery crosses through mudstone seam with amount of water-swelling clay minerals, and tectonic stress is large, which results in serious floor heave. This paper analyzes formation cause of floor heave and presents a combined supporting mode which includes whole-section anchored mesh and shotcreting in inner layer and whole-section concrete pouring in outer layer. Excellent supporting effect achieves.

关 键 词：软岩 底鼓 锚喷支护 混凝土浇筑 

分 类 号：TD353[矿业工程—矿井建设]