论文部分内容阅读
滇东北镇雄煤矿区地处横江、赤水河、乌江的分水岭上。可采煤层位于二叠系上统龙潭煤系上段。 上覆的飞仙关组第一段鲕状灰岩虽然含水较富,但是出露位置较高,地下径流多以悬挂式下降泉排泄,无贮水构造,对矿床充水无直接威胁。二迭系下统茅口、栖霞组中有较富岩溶裂隙水,但是它的侵蚀基准面远低于矿层,对矿床充水也无威协。区内年降雨量100毫米左右,是矿床充水的主要水源。并且矿
Zhenxiong coal mine in northeast Yunnan is located on the watershed of Hengjiang River, Chishui River and Wujiang River. The recoverable coal seam is located in the Upper Permian Longtan Coal System. The overlying Feixianguan Formation in the first period of oolitic limestone is rich in water but has a higher exposure position. Most of the underground runoff is drained by hanging descent springs without any water storage structure, which poses no immediate threat to the deposit water. The second member of the system is Maokou, and the Qixia Formation is rich in karst fissure water, but its erosion datum is much lower than that of the ore layer, and there is no threat to the deposit. The annual rainfall of about 100 mm in the area is the main source of water for mineral deposits. And mine