深基坑降水中的特殊工艺

目前，在南方及沿海高潜水位地区的沟槽、基坑工程施工中均会遇到人工降低地下水位的问题，如何做好降水工作是决定基坑施工是否顺利的重要条件。该文以某下立交地道工程基坑施工中所采用的降水方案——大口径真空深井降水为例，介绍在基坑降水中采取的降水措施。

Special Technology in Water Dropping of Deep Pit

At present, there is a problem of the manually dropping the underground water level met in the trench and pit engineering construction of the high water level areas in the south and along the coast. How to carry out the water dropping work well is the important condition to determine whether or not the pit construction is smooth. Taking the water dropping scheme - the large-diameter vacuum deep well water dropping used in the pit construction of a grade separation and subway project as an example, the artic...