特殊环境下地铁车站深基坑抽水试验及工程应用

Pumping Test and Engineering Application of Deep Foundation Pit of Metro Station in Special Environment

以广州地铁九号线清塘站工程为背景,介绍了该项目复杂的工程地质和水位地质条件,以及区间隧道双线贯通改变了地下水径流环境的特殊条件,通过有针对性的抽水试验,准确的查明了场地地下水的埋藏情况和各岩土层的水文地质参数,为车站基坑止水帷幕设计和施工提供了可靠的依据,最终结果表明实施效果良好,有重要的工程借鉴意义。

Based on Guangzhou metro Line 9 Qiangtang Station project, this paper introduces the complex engineering geology and water level geology conditions, and the breaking through of running tunnel has changed the special conditions of groundwater runoff environment. Through the targeted pumping test, the hydrogeological parameters of the burial condition of groundwater and the soil have been accurately identified, which has provided a reliable basis for the design and construction of foundation pit waterproof curtain. The final results showed a good effect and can provide a reference to similar project.