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薛庙滩井田为榆神矿区新建的一处大型矿井,井田内主要含水层是萨拉乌苏组,厚度21.95~51.40 m,富水性强。侏罗系碎屑岩类风化裂隙含水层,富水性相对较好。3#煤层直接充水含水层是延安组第四段底部砂岩,富水性弱,对煤矿生产建设不会构成危害。在局部的沟谷地段,煤层上覆基岩厚度较薄,地表水和萨拉乌苏组地下水会成为直接充水含水层,并可能形成突水溃沙地质灾害。论述了含水层特征及矿井充水因素,提出了防治水对策。
Xumiaitan minefield is a new large-scale mine in Yushen Mining Area. The main aquifer in the minefield is the Saula Wusu Formation, with a thickness of 21.95 to 51.40 m and a high water-richness. Jurassic clastic weathering fractured aquifers, water-rich relatively good. The direct water-filled aquifer in No.3 Coal Seam is the bottom sandstone in the fourth section of Yan’an Formation, which has weak water-rich capacity and will not pose a hazard to the coal production and construction. In the local gully area, the overlying bedrock thickness of the coal seam is relatively thin, and the surface water and the ground water of the Saula Wusu Formation will become the direct water-filled aquifer and may form the geological disaster of water inrush and sandblasting. The characteristics of aquifers and the factors of water filling in mines are discussed, and the water control measures are put forward.