longitudinal cofferdam

基本解释

A longitudinal concrete cofferdam was demolished by way of underwater controlled blasting.
利用水下控制爆破方法拆除了大源渡河中的混凝土纵向围堰。
The structure of the longitudinal cofferdam and its foundation of theFeilaixia project in Beijiang River is complicated.
北江飞来峡工程纵向围堰堰体及堰基的组成复杂。
The second stage construction area on the main river bed is formed by the second stage up & downstream transverse cofferdams and the longitudinal con crete cofferdam.
三峡工程二期上、下游横向围堰与混凝上纵向围堰共同形成二期基坑，测绘工作要求很高。