沪昆客专茅坪山隧道水文地质条件及涌水量研究

Study on Hydrogeological Conditions and Water Inflow of Maoping Mountain Tunnel on Shanghai-Kunming Passenger Dedicated Line

本文基于茅坪山隧道地形地貌、气候特征、地层岩性、地质构造、地表水径流条件、地下水类型、地下水补给及排泄条件的研究,对茅坪山隧道施工涌水量进行预测,预测最大涌水量72000m3/d。结合勘察阶段涌水量预测资料和配合施工阶段涌水量观测资料对比分析,提出隧道分段涌水量,为隧道排水能力评估及是否增加泄水洞提供可靠依据。

Based on the study of topography, climate, lithology, geological structure, surface water runoff conditions, groundwater types,groundwater recharge and discharge conditions in the Maoping Mountain Tunnel, this paper predicts the water inflow of Maoping Mountain Tunnel construction, the largest inflow of 72000m^3/d. Combined with the forecast data of the water inflow in the exploration stage and the comparative analysis of the observation in the construction stage, it proposed sectional tunnel water inflow to provide a reliable basis for evaluating tunnel drainage capacity and increasing drainage hole or not.