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一、前言一般低坝高水头或低水头引水防沙工程,从防止有害泥沙入渠要求出发,其基本的布置形式,根据当地水沙和地形条件可以有:1、费尔干式—即利用自然的或人工的弯道环流原理,达到“正面引水,侧面排沙”目的;2、印度式—即在单一河槽内,坝上引水口与河道主流成正交时,形成“侧面引水,正面排沙”的形势;3、底栏栅式—即在较小河道上利用拦河坝顶的铁栏栅,下层廊道引水,上层栏栅过沙,防止大部分卵石下渠道,所以亦叫“下
I. Introduction Generally, the low dam head with high head or low head water diversion and sediment prevention project should start from the requirement of preventing the entry of harmful sediment. The basic arrangement form of the project can be according to the local water and sediment and topographical conditions: 1, Natural or artificial curve circulation principle, to ”positive water diversion, lateral sediment “ purpose; 2, Indian - that in a single river channel, the dam on the water inlet and the mainstream of the river is orthogonal to form Water diversion, front sand ”situation; 3, the end of railing - that is, the use of the smaller riverway barrage at the top of the iron fence, the lower corridor water diversion, the upper fence over the sand, to prevent most of the pebbles under the channel, so Also called “next.”