线性工程建设对地下水流场的影响分析

出于降低高速公路坡度的目的, 团结桥连接线高速公路路基开挖在Ⅱ级阶地前缘处排水盲沟最大开挖段基本将原来连续的天然含水层切穿, 导致地下水排泄基准面下降, 使得地下水流场发生改变, 部分民井出现水位下降或干涸现象. 得出路基开挖排水是导致工程区附近地下水含水层结构及流场改变、 水位下降或局部疏干的主要原因.

An Analysis of the Impact of Linear Engineering Construction on Groundwater Flow Field

For the purpose of reducing highway slope, the connection line to Tuanjie Bridge must be excavated. As a result, the original continuous aquifer, which is by the largest excavated section of the blind drainage ditch in the front of second terrace edge, is almost cut off. This leads to a decline of the groundwater drainage datum plane, a change of .groundwater flow field, and a depression or dry-up in some resident wells. Roadbed excavation and drainage is the primary cause for the variation of aquifer structure, depression of groundwater level, reducing of water quantity and local unwatering.