通过反滤保土试验及冲刷自愈试验，给出了适合水布垭宽级配防渗料的反滤设计标准。

Through the filter protective soil tests and fissure self healing tests, the filter design standard of the wide grading anti seepage materials of Shuibuya Project is given.

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按渗井原理级配的复合多层滤料过滤，水按重力自上而下流动。

According to the principle of composite graded into seepage Wells pits multilayer filter material, water filtration by gravity flow top-down.

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