武汉高承压水区域深基坑降水的设计与施工

Dewatering Design and Construction Technology of the Deep Pit in the High Confined Aquifer Region in Wuhan

武汉长江两岸属Ⅰ级阶地,地质条件差,环境复杂,承压水位高,且承压水与长江水有联系。随着基坑开挖深度的增加,降水越来越重要,总结了高承压水软土地区深基坑减压降水的设计与施工技术,并讨论了由于降水引起地表沉降的规律及计算方法。

The both banks of Yangtze River in Wuhan are the first terrac, where the geological condition is poor, and the water head of confined aquifer is high and related to Yangtze River. At the same time, the environmental condition of Wuhan nearby the Yangtze river is complex. As the excavation＇s depth increasing, the design of dewatering and the technology of construction in soft soil region with high water head of confined aquifer are summarized detailedly, then the regulation and calculation of the settlement of the ground surface are discussed.