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本文用三向渗流有限元法计算了河子沟灰场拦洪坝防渗处理后渗流场，并与无防渗时渗流场进行了比较．揭示了一些规律性．
In this paper, seepage field after seepage control of Hezigou ash field dam is calculated by finite element method of three directions seepage, and compared with seepage field when there is no seepage prevention. Revealed some regularity.