杭州地铁深基坑高承压水回灌应用实践

针对基坑工程周边无排水条件、区域位置敏感等不利条件下的高承压水处理的技术难题，以杭州地铁1号线三期机场风井项目为例，优化基坑设计参数，采用抽灌一体化承压水处理方案，设计承压水回灌系统。研究结果表明，基坑各项监测数据均在可控范围内，验证了抽灌一体化承压水处理方案的可行性，对于类似工程条件下的深基坑施工具有一定的借鉴价值与指导意义。

Application and Practice on Recharge of High Pressure Confined Aquifer in Deep Excavation of Hangzhou Metro

Effective treatment of confined aquifers is an important factor that determines excavation safety. By taking the example of the project of the airport ventilation shaft of Hangzhou Metro Line 1 Phase III, this study optimizes the design parameters of excavation and adopts the treatment measure of pumping and recharging the confined aquifer, effectively solving the technical difficulties; for example, no drainage conditions near the excavation engineering and the adverse conditions of the sensitive surrounding location. The monitoring results indicate that each excavation-monitoring dataset is under control. The treatment measures for pumping and recharging confined aquifers can not only reduce engineering costs but also effectively protect the surrounding environment, providing a certain reference value and guiding significance to the construction of deep excavations under similar engineering conditions.