东胜煤田乌拉素矿区水文地质特征及充水因素研究

Study on Hydrogeological Characteristics and Water Filling Factors of Wulasu Mining Area in Dongsheng Coalfield

近年不断发生的突水事故,给煤矿安全生产带来严重威胁,研究矿区水文地质特征,分析矿井充水因素有重要现实意义。根据东胜煤田乌拉素矿区地质勘探和水文地质资料,对煤层开采导水裂隙带高度进行计算,结果表明:直罗组底部、含煤系地层的裂隙承压水含水层和上部煤层采空区内的积水,是煤层开采时矿井涌水的主要充水水源,矿井充水通道有断层裂隙带、封闭不良钻孔、采动导水裂隙带;其中导水裂隙带会将上部煤层采空区积水导通,使充水强度增大,矿坑涌水量增加。建议开采过程中要做到边探边采,探采结合,预防突水问题。

The water inrush accidents that have occurred in recent years have brought serious threats to the safe production of coal mines.It is of great practical significance to study the hydrogeological characteristics of mines and analyze the factors of water filling in mines.According to the geological exploration and hydrogeological data of the Wulasu mining area in Dongsheng coalfield,the height of the water-conducting fracture zone of coal seam mining is calculated.The results show that the bottom of the Zhiluo Formation,the fissure-bearing aquifer with coal-bearing strata and the upper coal seam goaf.The accumulated water in the mine is the main water-filled water source for the mine water in the coal seam mining.The mine water-filling channel has fault fissure belt,closed poor borehole,and mining water-conducting fissure zone.The water-conducting fissure zone will take the upper coal seam goaf.The water is turned on to increase the water filling intensity and the amount of water in the pit increases.It is recommended that during the mining process,it is necessary to explore and combine mining and mining to prevent water inrush.