西冯街矿3402工作面带压开采安全性评价  

Safety Evaluation of Mining under Pressure in 3402 Working Face of Xifengjie Colliery

作　　者：郝志强 Hao Zhiqiang(Xifengjie Coal Industry Co.,Ltd.,Shanxi Yangcheng Yangtai Group Co.,Jincheng,Shanxi 048100)

机构地区：[1]山西阳城阳泰集团西冯街煤业有限公司,山西晋城048100

出　　处：《江西煤炭科技》2023年第3期132-135,共4页Jiangxi Coal Science & Technology

摘　　要：西冯街矿3402工作面为3号煤层四采区首个带压开采工作面,为探究其带压开采的可行性,通过数值模拟、现场勘探等方法研究其底板隔水层厚度、隔水性能等具体特征,结果表明:工作面回采引起底板破坏深度最大值为25.50 m,与奥灰含水层顶面平均距离51.61 m,有效隔水层厚度为26.11 m,大于理论计算确定的极限厚度10 m,突水系数为0.019 MPa/m,小于规范要求的0.1 MPa/m,工作面能够正常带压开采。The 3402 working face of Xifengjie Colliery is the first pressurized mining face in the fourth mining area of the No.3 coal seam.In order to explore the feasibility of pressurized mining,the article studies the specific characteristics of its floor waterproof layer thickness and waterproof performance through numerical simulation and on-site exploration,whose results show that the maximum depth of floor failure caused by mining in the working face is 25.50 meters,with an average distance of 51.61 meters from the top surface of the Ordovician limestone aquifer.The effective waterproof layer thickness is 26.11 meters,which is 10 meters greater than the theoretical limit thickness determined by calculation.The water inrush coefficient is 0.019 MPa/m,which is less than the standard requirement of 0.1 MPa/m.The working face can be mined normally under pressure.

关 键 词：奥灰承压水 突水系数法 数值模拟 隔水层 

分 类 号：TD745.2[矿业工程—矿井通风与安全]