Cofferdams are made by driving metal sheet piling into the Bed to form a watertight fence.
在近代工程中，筑围堰时一般先打下钢板桩以形成阻水层。
When the cofferdams are completed and made safe, the water trapped between them is pumped out.
围堰完工稳固后，就将围堰间的水抽干。
The workmanship and process flow of the manufacturing of the cofferdams are presented herewith.
介绍钢围堰加工工艺与加工流程。
The workers have to race against time and weather to shore up the cofferdams and make them secure.
工人得和时间和天气赛跑，强化围堰使之牢固。
Until the cement core is built, the cofferdams are made of rubble which is simply dumped into the river.
在混凝土芯完成前，围堰只是一堆直接倒入江中的土石。
The second stage foundation pit of the TGP will be bounded by the upstream and downstream transverse cofferdams and the longitudinal concrete cofferdam.
三峡工程二期上下游横向围堰与混凝土纵向围堰共同形成基坑，保证二期工程施工。
Several key technical problems on the structural design and construction of the impervious core wall in the transverse cofferdams are expounded in this paper.
重点论述了围堰防渗墙结构设计及施工几个主要技术问题。
It is introduced in this paper employing electromagnetic technique to detect and to locate leakage in cofferdams of a hydropower station construction recently.
为了查清该地下灌排系统的存在及其构造，采用地球物理电磁法进行了探测。
It is introduced in this paper employing electromagnetic technique to detect and to locate leakage in cofferdams of a hydropower station construction recently.
本文介绍采用电磁法检测水电站围堰渗漏情况。
The MEP has ordered the country's two largest power producers to stop building the dams immediately and ensure the safety of cofferdams in the coming flood season.
环保部已再责令国内两家最大电力生产企业立即停建大坝并确保即将到来的汛季沿岸地区的安全。
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。
It has such advantages as light structure, aesthetic shape, less land requisition and simplified cofferdams and pit drainage, thus shortening the construction period and reducing the cost.
这种结构的优越性是；结构轻巧，造型美观，占地较少，简免施工围堰和基坑排水，从而能缩短工期，降低工程造价。
The seafood culturing reef can be placed in shallow sea and offshore area or sea area with cofferdams to realize culture of seafood by artificially releasing and naturally collecting fish fries.
将海珍礁投放入浅海近岸或围堰海域中，通过人工投放苗种或者自然采苗，实现海珍品的增养殖。
The seafood culturing reef can be placed in shallow sea and offshore area or sea area with cofferdams to realize culture of seafood by artificially releasing and naturally collecting fish fries.
将海珍礁投放入浅海近岸或围堰海域中，通过人工投放苗种或者自然采苗，实现海珍品的增养殖。
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