水下埋设柔性取排水管设计要点

在电厂大型海水直流冷却等取排水项目中,水下开槽埋设柔性管的设计与施工难度都较大,但国内外尚没有专门的技术规范。针对水上和水下不同的工程特点、参数敏感性和水下自然密实填料变形模量的取值等问题进行了对比分析,并采用实物现场试验和填料室内试验的方法进行验证;得出了水下埋设柔性管设计的要点,并提出了重点设计参数的推荐取值。

Main design points of underwater buried flexible intake and outfall pipes

For intake and outfall pipe lines project such as that of once-through sea water circulation of large-scale power plant,it is relatively difficult to design and implement the works under water,however there is no specific technical code for this aspect by now.Aiming at questions such as different characters of above or under water works,parameter sensitivity,and reaction modulus of the natural compacted backfill material,comparative studies are carried out and verifications are made by actual pipe tests on site and material tests in laboratory.Key design points and parameters are recommended.