排沙洞无粘结预应力混凝土衬砌的研究与实践

在黄河小浪底水利枢纽工程中，有压排沙洞衬砌工程成功采用了无粘结后张预应力混凝土衬砌的施工方法，是世界上规模最大的无粘结预应力隧洞衬砌工程，开创了无粘结预应力系统在我国水电工程中运用的先河。实践证明，小浪底水利本世纪排沙洞预应力系统设计上是成功的，结构上是安全可靠的，经济上是合理的。

Study on the non-cohesive pre-stressed concrete for the lining of desilting tunnel and its practice

In the lining construction of the pressured desilting tunnel of the Xiaolangdi Multipurpose Project, the non cohesive post tensioned pre stressed concrete was used This lining project is the largest scale one in the non cohesive pre stressed concrete lining tunnels in the world It also initiates the application of non cohesive pre stress system in our hydropower projects The practice proved that the non cohesive pre stress system of the desilting tunnel of the Xiaolangdi Multipurpose Project is successful in design, safe and reliable in structure, and reasonable in economy