黄河水源DN2000给水管线穿越汾河设计简介

Brief design introduction of which DN2000 water supply pipelines pass through Fenhe River from the headwaters of the Huanghe River

通过大管径给水管线穿越河流的工程实例 ,阐述了给水管线在遇到河道冲刷、地基土液化、高覆土等不良的工程条件下的设计方案 ;根据高覆土的特殊情况 ,提出了采用复合管道结构———包封 ,详细介绍了其做法 ,并进一步介绍了钢管壁厚的计算。

By the engineering examples of which large caliber w ater supply pipelines pass through the river, the paper elaborates design scheme of water supply pipelines when it encounters bad project conditions of river ch annel erosion, foundation soil liquidation, high earthing and so on. According t o special situation of high earthing, the paper puts forward using compound pipe structure--pack, introduces in detail its method, and then introduces calcu lation of steel pipe wall thickness, treatment methods of foundation soil liquid ation, treatment methods of resistant to erosion.