沉井施工技术在引黄工程汾河水库取水工程建设中的应用

Application of Sunk Well Technique In Construction of Water Intake Works of Fenhe Reservoir of the YRDP

山西省万家寨引黄工程联接段汾河水库取水口工程采用内径 2 5m、高 1 8m的大型钢筋混凝土沉井作为进水塔施工临时挡水建筑物 ,在国内是少有的。沉井的制作、下沉和拆除都有很大的难度。本文对沉井的设计与施工进行论述 ,对沉井的制作、下沉等施工技术进行分析总结。

The large typed sunk well,of which inner diameter and height are 25 m and 18 m respectively,is used as a temporary water retaining structure for building the water intake works in the Fenhe Reservoir of the YRDP.In this paper,the design,manufacture,construction and settlement of the sunk well are introduced.Two key problems,whether the sunk well can be settled smoothly or not and how to correct the deviation in the course of settlement of the sunk well,are discussed.