南水北调中线工程穿越小洪河顶管工程设计

Design of Pipe-jacking Project Crossing Xiaohong River in the Middle Route of South-to-North Water Transfer Project

南水北调中线工程输水线在某市共布置穿河建筑物20处,穿路(公路、铁路)建筑物341处,其中布置倒虹吸16处,顶管4处,其余均采用明挖。根据输水线路穿河(渠)工程总体布置,结合南水北调中线工程输水主管线第一次穿唐江河倒虹吸为典型工程的穿越经验,具体以穿越小洪河采用最大的单体顶管穿越的工程设计方案,作为典型穿河工程设计进行详细分析。

A total of 20 river crossing structures and 341 road crossing(highway and railway)structures are arranged along the water transmission line of the middle route of the South-to-North Water Transfer Project in a city.It includes 16 inverted siphons and 4 pipe jacking,and the rest are open cut.According to the general layout of the water transmission line crossing the river(canal)project,combined with the experience of crossing the Tangjiang river inverted siphon for the first time as a typical project of the water transmission main line of the middle route of the South-to-North Water Transfer Project,the project design scheme of crossing the Xiaohong river with the largest single pipe jacking is introduced in detail as a typical river crossing project design.