摘要
通过对京府八尺沟煤矿水文地质条件的分析及对突水系数理论的数值计算,得出该矿施工至奥陶系的5个钻孔对应的突水系数。根据全国各矿区突水资料的统计分析及八尺沟煤矿隔水层的地质条件,得出该矿临界突水系数为0.1 MPa/m,该矿8-2煤层在开采过程中存在底板突水的危险。根据5个钻孔对应的突水系数,对该矿8-2煤层开采底板突水危险性进行了判定及分区,+780 m水平以上的煤层为带压开采安全区,+730^+780 m水平的煤层为带压开采过渡区,+730m水平以下的煤层为带压开采危险区。
The water inrush coefficient related to the 5 holes drilled to the Ordovician was obtained at Jingfu Ba chigou coal mine,through analysis of hydrogeologic conditions and numerical calculation made by water inrush coefficient theory.According to the statistical analysis of national wide mine-water inrush information,and the geological conditions of underground aquifuge at Bachigou coal mine,the 0.1 MPa/m critical water inrush coefficient is determined,and hence a conclusion is reached,that is,the 8-2 coal seam floor has water inrush risks during mining.Based on the coefficient figures of the 5 holes,the 8-2 coal seam could be divided into two areas,that is,the safe area and the dangerous area.
出处
《中国煤炭》
北大核心
2010年第12期94-96,共3页
China Coal
关键词
矿井水害
煤层底板
突水系数
coal mine flood
seam floor
water inrush coefficient
