过江隧道盾构施工技术研究

Study on Shield construction technology of River-crossing Tunnel

文章以广州轨道交通某盾构法施工的过江隧道为研究对象,对水下隧道盾构长距离穿越砂层、承受高水压,在复杂地质条件和地下水状况下的施工技术进行了探讨。为了确保盾构过江安全,本文从隧道上浮问题和管片变形,水土压力设定与控制,泥浆特性等问题进行初步的研究分析。

Based on a ri ver-crossing tunnel by shield method of Guangzhou metro tunnel project,this paper studied the issues of the construction technology of river-crossing tunnel which is long-distance through sand layer,under high water pressure、complicated geological condition and ground water.In order to insure the safety of river-crossing tunnel,an indepth study is made on the problems of tunnel floating and segmental transfiguration,the method of enactment and control on water-soil pressure,the characteristic of soft mud.