矿井初采工作面水文地质条件分析及涌水量预测

Analysis of Hydrogeological Conditions and Prediction of Water Inflow in the Initial Mining Face of a Mine

为提高煤炭开采安全系数,降低井下涌水影响,结合已有地质条件及探测钻孔资料,对山西某煤矿3901综采工作面水文地质条件进行分析,并通过理论计算分析9号煤层开采后导水裂隙发育高度,与顶板含水层连通强开,预测回采期间正常涌水量及最大涌水量。将预测结果与采面回采期间实际涌水量进行比对分析发现,实际涌水量与预测最大涌水量较接近,以预测最大涌水量为依据配备排水设备、构建排水系统较为合理。

In order to improve the safety factor of coal mining and reduce the impact of underground water inflow,combined with existing geological conditions and drilling data,the hydrogeological conditions of the 3901 fully mechanized mining face in a coal mine in Shanxi were analyzed.Through theoretical calculation,the development height of water conducting cracks in the 9th coal seam after mining was analyzed,and it was strongly connected with the roof aquifer to predict the normal and maximum water inflow during the mining period.Comparing the predicted results with the actual water inflow during the mining process,it was found that the actual water inflow was close to the predicted maximum water inflow.Therefore,it is more reasonable to equip drainage equipment and construct a drainage system based on the predicted maximum water inflow.