阳煤二矿15#煤层带压开采安全性评价  

Safety evaluation of 15#coal seam under pressure in Yangmei No.2 Mine

作　　者：李骏 LI Jun(No.2 Mine of Yangquan Coal(Group)Co.,Ltd.,Shanxi Yangquan 045000)

机构地区：[1]阳煤集团二矿,山西阳泉045000

出　　处：《煤矿现代化》2020年第4期58-60,共3页Coal Mine Modernization

摘　　要：阳煤二矿15#煤层存在带压开采的问题,为确定其带压开采的安全性和可行性,采用水文钻孔勘查、理论分析计算等方法研究表明,奥陶系灰岩含水层水头压力为1.6MPa,15#煤层和奥灰水间隔水层厚度为35.0m,隔水性能良好,工作面回采期间底板塑性破坏深度为11.6m,突水系数为0.085MPa/m,突水系数小于0.1MPa/m,极限水压为5.6MPa,远大于实际水压,在完整底板条件下工作面能够安全的进行回采。The 15#coal seam of Yangmei No.2 Mine has the problem of mining under pressure.In order to determine the safety and feasibil-ity of mining under pressure,hydrological drilling surveys and theoretical analysis calculations have shown that the head pressure of Ordovi-cian limestone aquifer is 1.6MPa,the thickness of the 15#coal seam and the ash water interval water layer is 35.0m,the water barrier perfor-mance is good,the depth of plastic failure of the floor during mining is 11.6m,the water burst coefficient is 0.085MPa/m,and the water burst coefficient is less than 0.1MPa/m,the ultimate water pressure is 5.6 MPa,which is much greater than the actual water pressure.Under the condition of a complete floor,the working face can be safely mined.

关 键 词：水文探查孔 突水系数法 带压开采 

分 类 号：TD745[矿业工程—矿井通风与安全]