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本文根据基坑防渗帷幕周围的地下水渗流特征，分析了渗流力对基坑流砂的影响，提出了按涌砂安全系数进行防渗帷幕埋入深度计算的方法。
Based on the characteristics of groundwater seepage around the anti-seepage curtain of foundation pit, the paper analyzes the influence of seepage force on runoff of foundation pit and puts forward a method to calculate the depth of anti-seepage curtain according to the safety factor of sand casting.