地下水回灌在地铁边基坑降水中的应用

基坑降水过程中，在降低坑内水位同时，为保护周边环境安全采用地下水回灌保证坑外一定区域内水位下降较小。上海盛大国际金融中心位于三条地铁交接处，环境保护要求较高。降水同时结合回灌技术能局部控制降水影响范围，通过数值方法计算和分析回灌效果较好，并在实际工程中成功应用。

Groundwater Recharge of Pit Dewatering Close to the Metro

During the foundation pit dewatering process, groundwater recharge is taken as the pit water level reduced in pit in order to protect the safety of the environment to ensure that the water level drop smaller within a certain area outside the pit. The grand international financial center is located at the junction of three subway, environmental protection is higher. Groundwater recharge technology combined with dewatering can control dewatering sphere of influence, by the numerical method to calculate and analysis of the recharge, and successfully applied in practical engineering.