禹门口东扩工程预应力钢筒混凝土管道穿越汾河关键技术研究

Key Techniques of Placing PCCP of Yumenkou Eastern Extension Project to Pass Fen River

禹门口提水东扩工程的管线在襄汾县穿越汾河,输水管道采用直径为2 m的预应力钢筒混凝土管道。管道穿越汾河施工十分困难。文中在明确其水文地质条件的基础上,从设计和施工的角度论述了穿越汾河的关键技术包括束窄河道、分期导流、开挖引河、围堰施工及基坑钻井排水等。

The pipe line of Yunmenkou Eastern Extension Project pass Fen River in Xiangfen County. The water diversion pipe is PCCP of 2m in diameter. Constructing this works is very difficult. On the basis of understanding hy-drogeologic condition in situ, and starting from design and construction angles, the paper expounds the key technique problems of passing Fen River including： narrowing river channel, stage construction diversion, excavating approach channel, construction of cofferdam and drilling drainage wells in foundation pit etc.