In permeable ground, hanging anti-seepage curtain combined with recharge wells were used to control the underground water altitude surrounding the deep foundation pit during its excavation and lowering underground water in it.this technique is proved effective by practice.%在透水地层中的基坑降水工程，利用悬挂式防渗帷幕与回灌井对基坑周边地下水水位进行控制。工程实例表明，该技术效果显著。
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