杭州地铁2号线钱塘江江北风井承压水治理技术

Confined Water Treatment Technology Adopted in the Riverside Ventilation Shaft Project of Hangzhou Metro Line 2

杭州地铁2号线钱塘江江北风井工程紧邻钱塘江北岸大堤,地质情况复杂,涉及到的承压含水层为圆砾层,基坑降水难度较大;周边还有交通银行、庆春路隧道等重大建构筑物,对环境保护要求高。针对这些特点,详细介绍和分析了该工程承压水治理方案,供类似工程参考。

The Jiangbei ventilation shaft project on Hangzhou metro Line 2, which lies on the north bank of Qiantang River, is facing complicated geological conditions, confined aquifer of the ancient riverkr_d gravel layer and difficult foundation pit dewatering, the station is also surrounded by some important buildings, such as the Bank of Communications and the Qing- chun Tunnel, so the environmental protection requirements are very strict. In view of these characters, the confined water treatment scheme is introducedin detail to provided a reference for similar engineering.