摘要
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.
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 de- cline of the groundwater drainage datum plane, achange of . groundwater flow field, and a depres- sion or dry-up in some resident wells. Roadbed ex- cavation and drainage is the primary cause for the variation of aquifer structure, depression of groundwater level, reducing of water quantity and local unwatering.
出处
《冰川冻土》
CSCD
北大核心
2012年第5期1200-1205,共6页
Journal of Glaciology and Geocryology
基金
中国地质调查局大调查项目(1212010818080)资助
关键词
地下水流场
含水层结构
地下水水位下降
高速公路
groundwater flow field
aquifer structure
depression of groundwater level
expressway
