武汉长江隧道盾构过江施工技术措施  

Technical Measures for Construction of Wuhan Yangtze River Crossing Project Where Shield TBMs are Adopted

作　　者：侯建军 赵运臣[2] 

机构地区：[1]中铁隧道股份有限公司,河南新乡453000 [2]中铁隧道集团科研所,河南洛阳471009

出　　处：《土工基础》2008年第2期17-20,共4页Soil Engineering and Foundation

摘　　要：武汉长江隧道工程盾构长距离穿越砂层,盾构承受水压高,地质条件和地下水状况非常复杂,江底段隧道最小覆土厚度小于隧道直径,而且水底部分与覆土压力相比水压力更大,特别是武昌深槽段水压力主导的施工。为了确保盾构过江安全,对水土压力设定与控制、泥浆特性、隧道上浮问题和管片变形及软硬不均地层盾构姿态控制等问题进行初步的研究分析。Wuhan Yangtze River Crossing Project is one of highly complicated geological and underground water condition, where TBM must run through sand stratum of long distance along the tunnel line with high water pressure, less than 1D of minimum overburden thickness at the section of riverbed, and much more water pressure than earth pressure under the riverbed, Wuchang deep riverbed groove section in particular. in this essay from the point of setting and control of water In order to ensure safely crossing the river, we do a primary research and earth pressure, slurry features, tunnel up-floating, segment deformation, and TBM＇s position control in uneven ground.

关 键 词：盾构隧道 水土压力 泥浆特性 隧道上浮 盾构姿态控制 

分 类 号：TU455[建筑科学—岩土工程]