顺坝是指一种纵向河道整治建筑物。坝身一般较长,与水流方向大致平行或有很小交角,沿治导线布置,它具有束窄河槽、引导水流、调整岸线的作用,因此又称作导流坝。顺坝常常布设在水流分散的过渡段,分汊河段的分、汇流区,急弯和凹岸尾部,以及河口治理段。对于堤前滩地较窄的堤防,可设置与堤岸线基本平行的顺坝。
misc. longitudinal dike
对过渡段浅滩形成的机理,丁、顺坝的作用和布置等方面进行论述,并以整治实例予以说明。
The formation mechanism of transition part shoal, function and arrangement of spur dike and training dike are expounded and living examples are given for explanation.
结果表明:(1)三峡坝区河谷深槽是在三峡地区构造抬升过程中,水流顺构造裂隙强烈侵蚀下切而形成的;
The deep troughs on the Three Gorges valley bottom are formed by river downcutting along the structurally zones on the background of regional tectonic uplift.
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