It is indicated from the reasearch result of clearing silt that, the penetrability can be better restored after clearing the silt on the surface of filter bed.

• 清淤试验研究结果表明，通过清除滤床表层淤泥可以使滤床的渗透性得到很好的恢复，清淤的办法需在取水工程停止运行的前提下进行；