川气东输工程漂浮法穿越青弋江

Flotation Technique for East Gas Pipeline Passing through Qingyi River

在川气东输穿越青弋江工程中,由于地质复杂,多次定向穿越失败,采用漂浮法施工技术成功穿越青弋江。就大口径管道穿越河流水下成沟、漂管过河的方法进行了详细介绍,为大口径管道穿越河流提供了一种施工方法。

In East Gas Transmission Project through Qingyi River,because of the complex geological and the failures of directional passing,the successful use of floating technology for large diameter pipe passing through Qingyi River is introduced.The large diameter pipe was floated on the river and sunk into the underwater ditch prepared by dredger,and pipeline floating on the river was buried.This provides a new construction technology for large diameter pipe line crossing underwater.