长沙地铁1号线对白沙井的影响及预防措施探讨

Analysis on Effect of Changsha's Subway Line 1 Project on the Groundwater of Baishajing and Counter Measures

城市建设诱发的地质环境变化已越来越多为人们关注和重视。白沙井是长沙的风景名胜,对长沙有着特殊的含义。文章分析了白沙古井地下水形成的自然条件,分布状况,水文地质特征和补给、径流及排泄条件,对地铁1号线工程建设和营运对白沙井的潜在影响进行了分析,认为这种潜在影响主要表现在如下方面:阻遏了地下水的径流,引起地下水位升降,导致地下水环境恶化,提出了预防途径和措施,为工程设计、施工和地下水环境保护提供了参考依据。

With the development of urbanization, a series of changes in urban geological environment has been brought about. Now much attention has been paid on the changes in urban geological environment. Baishajiang is one of the famous scenic sites in Changsha city, which is of special benefit to the people. In this paper, the natural condi- tions, distribution, hydro-geological characteristics, replenishment, runoff, drainage of groundwater have been dis- cussed. Subsequently,the studies are done on potential influence of Changsha subway line 1 project construction on groundwater environment in the process of construction and operation, the effect is mainly as follows ： blocking the flowout of ancient channel water, causing the fluctuation of ground water level and resulting in deterioration of ground- water environment. Preventing approaches and countermeasures are proposeed, which could be the guidance for pro- ject design,construction and environmental protection of underground water.