降水小井在斜井明槽施工中的应用

Application of Small Dewatering Well to Open Cut Construction of Mine Inclined Shaft

新疆焦煤集团1930平硐改扩建工程主、副斜井明槽段所处位置,冲积层和砾石层较厚,每个井筒涌水量均大于30m^3/h,明槽开挖难度较大。为此,根据地层特点,决定在明槽周围施工降水小井来降低施工范围内的静水位,减小涌水量,为明槽开挖创造良好条件。方案实施后,取得了预期效果。

The open cut sections of the mine main and auxiliary inclined shafts in the reconstruction of No.1930 Adit in Xinjiang Coking Coal Group were located in a thick alluvium and gravel bed.The water inflow volume of each mine inclined shaft was over 30m^3/h and the difficulty of the open cut excavation was high.Therefore according to the strata features,small dewatering wells made around the open cut were applied to reduce the still-water level within the construction scope.The water inflow volume reduced could create good conditions to the excavation of the open cut.After the construction plan completed,the expected effect was obtained.