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In this paper, the effect of water scouring to the filter about clay and gravelly soil is analyzed by using the crack scour tests. 本文结合湖南隆回渗滤取水工程，采用调查、试验、分析、研究等方法，对滤层淤塞的影响因素、反冲洗改善天然滤层渗透性的试验进行研究。