丰城市SS井田矿井充水因素分析及矿坑涌水量预测

Analysis of Mine Water Filling Factors and Prediction of Mine Water Inflow in SS Well Field,Fengcheng City

为分析丰城市SS井田矿井的充水因素,并科学合理地预测矿坑涌水量,以确保矿井的安全生产和相关部门在煤炭资源开采决策中的数据支持。选择SS井田作为研究对象,通过详细的水文地质条件分析,采用“地下水动力学法”和“水文地质比拟法”同时进行涌水量的预测。矿区主要充水因素包括大气降水、岩溶裂隙水及断层充水,主要含水层为第四系孔隙含水层、新近系红层砾岩裂隙岩溶含水层、三叠系下统大冶组灰岩岩溶含水层等。采用地下水动力学法预测,B4煤层涌水量为2095.2m^(3)/d;采用水文地质比拟法预测,B4煤层涌水量为2006.64m^(3)/d。两种方法预测结果均较实际平均涌水量大,但小于最大涌水量,说明预测结果可靠。结合预测结果及煤矿开采要求,建议按照最大涌水量值进行开采设计,以提高开采安全性。

The purpose of this paper is to analyze the water filling factors of the Shishang well in Fengcheng City,Jiangxi Province,and scientifically and reasonably predict the water inflow of the mine to ensure the safety production of the mine and the data support of relevant departments in coal resource mining decisions.Selecting the Shishang well field as the research object,a detailed analysis of hydrogeological conditions was conducted,and two methods,"groundwater dynamics method"and"hydrogeological comparison method",were used simultaneously to predict the inflow.The main water filling factors in the mining area include atmospheric precipitation,karst fissure water,and fault water.The main aquifers are the Quaternary pore aquifer,the Neogene red layer conglomerate fissure karst aquifer,and the Triassic Lower Daye Formation limestone karst aquifer.Using groundwater dynamics method to predict,the water inflow of B4 coal seam is 2095.2m^(3)/d;Using hydrogeological comparison method,the water inflow of B4 coal seam is predicted to be 2006.64m^(3)/d.The predicted results of both methods are higher than the actual average water inflow,but lower than the maximum water inflow,indicating the reliability of the predicted results.Based on the predicted results and coal mining requirements,it is recommended to design the mining according to the maximum water inflow value to improve mining safety.