根据含水介质及水动力条件，拟建隧址区地下水类型可分为第四系松散层孔隙潜

According to the water-containing medium and hydrodynamic conditions, the type of groundwater in the proposed tunnel site can be divided into quaternary loose layer pore water and bedrock fissure water. Quaternary loose layer pore water: It is stored in the Quaternary loose accumulation layer on the hillside, mainly recharged by atmospheric precipitation, most of it is discharged by evaporation, and a small part penetrates into the ground into bedrock fissures and is converted into bedrock fissures water. According to 1: 2000 engineering geological mapping, the amount of groundwater in this kind of tunnel area is small and is greatly affected by atmospheric precipitation. Bedrock fissure water: unevenly distributed in the weathering fissures of the mudstone in the tunnel site area, mainly receiving the recharge of atmospheric precipitation, followed by the infiltration replenishment of the pore water of the Quaternary loose layer. Weathered fissures are the main place of occurrence and movement channels of this type of groundwater. Its flow direction, velocity, and flow rate are controlled by the connectivity, development direction, degree of development, and rock level of the fissure. This type of groundwater has a small amount of water and is significantly affected by atmospheric precipitation. When the tunnel passes through the rock formation, if it encounters a water-flooded weathering fissure layer, it may produce dripping.

根据含水介质及水动力条件，拟建隧址区地下水类型可分为第四系松散层孔隙潜水和基岩裂隙水。第四系松散层孔隙水：赋存于山坡内的第四系松散堆积层中，以大气降水补给为主，大部分通过蒸发排泄，小部分渗入地下到基岩裂隙中，转化为基岩裂隙水。据1: 2000 工程地质调绘，隧址区该类地下水水量较小且受大气降水影响较大。基岩裂隙水: 不均匀的赋存于隧址区泥岩的风化裂隙中，主要接受大气降水的补给，其次为第四系松散层孔隙潜水的渗入补给。风化裂隙是该类地下水的主要赋存场所和运动通道，其流向、流速、流量受裂隙的连通性、发育方向、发育程度以及岩石层面的控制，一般地表上的分水岭也是该类地下水的分水岭，该类地下水水量较小且受大气降水影响明显。隧道穿越岩层施工如遇到赋水风化裂隙层，可能会产生滴水现象。

According to the water bearing medium and hydrodynamic conditions, the groundwater types in the proposed tunnel site can be divided into Quaternary loose bed pore phreatic water and bedrock fissure water. Pore water of the Quaternary loose layer: it occurs in the Quaternary loose accumulation layer in the hillside, mainly supplied by atmospheric precipitation, most of which is discharged by evaporation, and a small part is infiltrated into the bedrock fissure, and converted into bedrock fissure water. According to 1:2000 engineering geological mapping, the amount of groundwater in the tunnel site is small and greatly affected by atmospheric precipitation. Bedrock fissure water: it is unevenly distributed in the weathering fissure of mudstone in the tunnel site, mainly supplied by atmospheric precipitation, followed by infiltration of pore phreatic water in Quaternary loose layer. Weathering fissure is the main occurrence place and movement channel of this kind of groundwater. Its flow direction, velocity and flow are controlled by the connectivity, development direction, development degree and rock layer of the fissure. Generally, the watershed on the surface is also the watershed of this kind of groundwater. The water volume of this kind of groundwater is small and obviously affected by atmospheric precipitation. If the tunnel passes through the rock stratum and meets the water bearing weathered fracture layer, water dripping may occur.