摘要
为了评价王家岭煤矿2号煤层带压开采的安全性,在分析了井田奥灰含水层富水性特征、2号煤层底板隔水层的阻水能力、2号煤层开采底板扰动破坏带深度的基础上,采用突水系数法对2号煤层奥灰带压开采进行了评价。经分析研究,井田内2号煤层奥灰突水系数为0.010~0.048 MPa/m,均小于煤层底板受构造破坏地带的临界突水系数0.06 MPa/m,正常地段属于非突水危险区,构造地段属于突水威胁区,不存在突水危险区。
In order to evaluate the safety of mining under pressure in No.2 Coal Seam of Wangjialing Mine,based on the analysis of the water yield characteristics of Ordovician limestone aquifer,the water blocking capacity of floor water resisting layer of No.2 Coal Seam and the depth of disturbance and failure zone of floor,the water inrush coefficient method was used to evaluate the mining under pressure in No.2 Coal Seam.Through analysis and research,the Ordovician limestone water inrush coefficient of No.2 Coal Seam in the mine field was 0.010~0.048 MPa/m,which was less than the critical water inrush coefficient of the structural damage zone of the coal seam floor of 0.06 MPa/m.The normal section belonged to the non water inrush risk area,the structural section belonged to the water inrush threat area,and there was no water inrush risk area.
作者
吴振岭
Wu Zhenling(Bureau of Hydrogeology,China National Administration of Coal Geology,Handan 056000,China)
出处
《煤炭与化工》
CAS
2022年第8期63-66,70,共5页
Coal and Chemical Industry
关键词
带压开采
奥灰富水性
底板破坏
突水系数
mining under pressure
water rich property of Ordovician limestone
floor failure
water inrush coefficient
