和顺南部矿区水文地质条件与矿井涌水量预测

Analysis of Hydrogeological Characters and Forecast of Inflow in the south of HeShun area

在和顺地区水文地质资料的基础上,根据抽水试验结果,划分出三个主要的含水层组,得出影响煤层3、15煤安全开采的含水层为二叠系K10、K9、K8、K7砂岩和奥陶系K4、K3、K2灰岩;通过分析水文地质条件,发现矿井充水水源主要为受到大气降水补给的山西组、上石盒子组和太原组的含水层,以及采空区积水,采动裂隙为主要的导水通道,陷落柱、断层封闭性较好;得出该区3、15煤的水文地质类型分别为二类一型和三类一型,进一步选择采用大井法预测出矿井最大涌水量为134.23 m3/h。

Based on hydrogeological data of Heshun area, three aquifer systems are divided according to the results of pumping test. Some conclusions are obtained. The aquifers influencing safely mining of coal seam No. 3 and No. 15 is K10, K9, K8, K7 of Permian sandstone and K4 , K3 , K2 of Ordovician limestone. By analyzing the hydrogeological conditions, it is found that the mainly source of water is the aquifers of Shanxi formation, upper Shihezi formation and Taiyuan formation which are precipitate water and gob water, and mining - induced fissures are the mainly conductor. For the sealing systems in collapse columns and faults, they are not the good conductor. The hydregeological type of coal seam No. 3 and No. 15 is second -first category and third -first category. Using big well method to predict water inflow, the value is simulated to 134.23 m3/h.