薛湖煤矿矿井充水主控因素与矿井涌水量预测研究

河南薛湖煤矿在开采过程中受到了水害的影响，为了确保煤矿安全、高效生产，分析了矿井水文地质条件，研究了矿井冲水的主控因素，并对矿井涌水量进行预测计算。研究结果表明，薛湖煤矿矿区发育六大含水层（组）和三大隔水层（组），煤系地层的二叠系砂岩裂隙含水层是危害矿井生产的主要含水层，随着生产的进行，顶板砂岩水多被疏干，对生产的安全不会造成很大的影响。二2主采煤层的直接充水水源为二叠系二2煤层顶板砂岩裂隙承压水，间接充水水源为二2煤层底板和奥陶系灰岩岩溶裂隙承压水，矿井的自身采空区积水是薛湖矿的充水水源之一。二2煤的导水途径主要有裂隙、断层和封闭不良钻孔3种，高角度正断层可能成为导水通道。越往深部开采水压将会越大，构造和裂隙的发育增加了底板水涌入矿井的危险。选取比拟法和稳定流解析法对采区矿井涌水量进行计算，比拟法计算的全矿井正常涌水量656 m 3/h、最大涌水量787 m 3/h比较符合近年来矿井充水的实际情况，可以作为下一步矿井开采的依据。但随着开采水平的不断延深，太灰岩溶水向矿井突水的概率也将大大提高，若出现短期内多点突水情况，将会超过比拟法预算的最大涌水量。

Study on main control factors of mine water filling and prediction of mine water inflow in Xuehu Coal Mine

Xuehu Coal Mine was affected by water disaster in the mining process in Henan Province.In order to ensure coal mine safety and efficient production，this work analyzes the hydrogeological conditions of the mine，the main control factors of mine flushing are studied，and the mine water inflow is predicted and calculated.The results show that Xuehu Coal Mine is Six aquifers（groups） and three aquifers（groups） are developed in the mining area.Permian sandstone fractured aquifer in coal measure strata is the main aquifer endangering mine production.With the progress of production，the sandstone water on the roof is mostly drained，which will not have a great impact on the safety of production.The direct water filling source of No.2 main mining coal seam is the sandstone fissure confined water in the roof of No.2 coal seam of Permian.The indirect water filling source is confined water from the floor of No.2 coal seam and the karst fissure of Ordovician limestone.The accumulated water in the goaf of the mine is one of the water filling sources of Xuehu mine.There are three main ways to conduct water in No.2 coal:fracture，fault and poorly sealed borehole.High angle normal fault may become a water channel.The deeper the mining，the greater the water pressure will be.The development of structures and fractures increases the risk of floor water flowing into the mine.The analogy method and steady flow analysis method are selected to calculate the mine water inflow in the mining area，the calculated normal water inflow of the whole mine is 656 m 3/h and the maximum water inflow is 787 m 3/h，which is more in line with the actual situation of mine water filling in recent years and can be used as the basis for the next mine mining.However，with the continuous deepening of the mining level，the probability of water inrush from Taihui karst water to the mine will also be greatly improved.If there is multi-point water inrush in the short term，it will exceed the maximum water inflow budgeted by the analogy method.
〖WTHZ〗Keywords:〖WTBZ〗mine water filling；mine water inflow；Shanxi Formation；water diversion pathway；water inflow prediction；Xuehu Coal Mine〖HT7〗