Dewatering is one of the most important measures for the construction of deep foundation. Artificial reduction the groundwater will cause the around ground within a certain range sink, surrounding environment deformation 、 the adjacent buildings and public works damaged. 基坑降水是深基坑工程施工中的重要措施之一,人工降低地下水位,将引起周围一定范围内的地面下沉、周边环境变形,以及相邻建筑物和市政工程的损坏等。