疏浚河道 meaning in English

dredging
river training

It proposes that under the drying climate background , the lakes disappeared mainly because that : firstly clay and sand silted up by the yellow river flooding ; secondly human activities generated great effects
认为在气候变干的大背景下，湖泊消失的原因主要有两个：一是黄河泛滥所造成的小清河流域的泥沙淤积；二是疏浚河道、围湖造田、过渡利用水资源等人类活动的影响。
Abstract : a design and construction method to a new - typed cofferdam is introduced . after its project application , such advantages are proved as less investment , high construction pace , less labour power and dredging river
文摘:介绍一种新型围堰的设计施工方法.通过工程应用证明，新型围堰比采用传统的围堰不仅投资省，而且具有施工进度快、节省人力、不挖毁土地、疏浚河道等特点