城市大型排水泵站沉井基坑降水技术探讨

Disscussion on deep well pit dewatering techique of urban large drainage pump station

本文就富水地区（渗透系数Ｋ＝３４７ｍ／ｄ）基坑降水，经互阻抽水试验，确定降水方案，并预测降水效果，与实际降水情况进行对比，分析认为在渗透系数大于１５０ｍ／ｄ的地区，采用此方案是可行的，对于类似工程设计与施工具有一定的参考价值．

This paper deals with pit deweatering in rich aquifer area (permeability coefficient K =347 m/d). Dewatering plan is determined by pumping tests. Meanwhile, deweatering result is detected and compared with that of actual dewatering After analyses, it is considered that theres the possibility in areas with permeability coefficient more than 150 m/d. This article has certain value of reference for design and construction of similar projects.