工作面老空水形成原因分析及其防治

Causal Analysis and Prevention of Goaf Water at Working Face

针对赤城煤矿2301工作面开采期间存在老空水突水危险问题,研究分析了该工作面老空水形成的主要充水来源及充水通道,结果表明,该工作面老空水来源于煤层底板灰岩岩溶裂隙水和奥灰含水层,主要充水通道为煤层底板采动裂隙导水通道和断裂构造导水通道。结合矿井实际情况,采取在临近2301工作面采空区区域范围内划分出积水线、探水线和警戒线。根据各区域的不同情况采取在探水线区域进行探放水、在警戒线区域进行观察警戒等分区治理措施。应用结果表明,该工作面自开始生产到回采结束未发生过突水事故,应用效果良好。

In view of water inrush of goaf water at 2301 working face of Chicheng Colliery,the paper studies and analyzes the main water filling sources and water filling channels of goaf water,finding out the goaf water comes from limestone karst fissure water and Ordovician limestone aquifer in coal seam floor,and the main water filling channels are coal seam floor mining fissure water channel and fault structure water channel.Combined with the actual situation of the mine,the water accumulation line,water exploration line and warning line are divided within the goaf area near 2301 working face.According to the different conditions of each area,zoning treatment measures such as water exploration and drainage in the water exploration line area and observation and warning in the warning line area are taken.The application results show that there has been no water inrush accident from the beginning of production to the end of mining with good application effect.