Cofferdam temporary 临时圜堰
Temporary projects include temporary cofferdam project and protection project of ancient relics.
临时附属工程主要是临时围堰工程和文物防护工程。
Steel cofferdam is adopted as a temporary structure to protect structure against ship collision so as to effectively ensure bridge pier's safety.
将临时结构钢套箱用作防船撞结构，有效解决桥墩防撞安全问题；
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