1.问题提出. ××油田在海滩钻井取油,首先需修筑海堤,挡住海水形成陆地,然后方能开钻打井,围堰目的还在于形成取土区,用来修筑海堤之用。海滩区地势平坦坡度在1/1000左右,低潮位时,滩地可露出水面,此处施工从陆域或海域均不能进入施工机械,目前修筑围堰,海堤的施工力量主要依靠大量民工,土法上马,此 1. The question is raised. × × Oilfield Drilling wells to take oil, the first need to build seawall, block the sea water to form the land, and then can only drill drilling wells, cofferdam is still the purpose of the formation of borrow area, used to build the seawall . Beach area flat slope of about 1/1000, low tide, the beach can be exposed to the surface, where construction can not enter the land from the sea or construction machinery, construction of cofferdam, the construction of seawall depends mainly on a large number of migrant workers, soil Act launched, this