为了落淤还滩,黄河上曾采用过编篱透水坝。此种编篱工程的主要优点是有弹性,糙率大,易减速缓流,落淤还滩的效果较好。但也有很大的缺点,即易于腐烂,不耐用,而且基础防护比较困难。基于这种情况,曾设想把鲜柳枝(未发芽)按一定的排列次序密植,成活后将柳梢编织在一起,既可起到编篱透水坝的作用,又避免了容易腐烂的缺点。 In order to drop silt Beach, the Yellow River had used a stratified percolation dam. The main advantages of such a hedgerow project is flexible, rough rate, easy to slow down slowed, off silt Beach better. But there are also great drawbacks, that is, easy to decay, not durable, and the basic protection is more difficult. Based on this situation, it has been assumed that the fresh willow branches (not sprouting) densely arranged in a certain order, will survive after the willow braided together, can play the role of hedge pervious dam, but also to avoid the shortcomings of perishable.