The paper deals with the law of ground water movement in the slope and analyzes the effect of high phreatic line in the bulk on the slope stability.

本文从研究边坡中地下水运动规律入手，分析坡体中的浸润线位置过高对边坡稳定的影响。

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The tailings dam in the Third Baiyin Smeltery is a damaged dam. To secure the dam, radial collector well is applied to cause a drawdown of The phreatic line.

白银公司三冶炼厂尾矿坝是一座险病坝，利用辐射井排水降低坝体浸润线的措施，保证了坝体的安全。

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The phreatic line is higher at upstream-type tailings dam and most of dams are in saturated state, thus easily leading to flow slide destruction under earthquake.

上游法尾矿坝浸润线较高，大部分坝体处于饱和状态，地震作用下易发生液化流滑破坏。

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