南湖路湘江隧道盾构施工影响因素及工程措施  

The influence and the treatment for the construction of Xiangjiang River shield tunnel at Nanhu Road

作　　者：彭柏兴[1,2] 何天铭[3] 王会云 肖宏宇[2] 

机构地区：[1]长沙市勘测设计研究院,湖南长沙410007 [2]长沙理工大学岩土与隧道工程系,湖南长沙410004 [3]中铁隧道集团有限公司,河南洛阳471009

出　　处：《交通科学与工程》2012年第2期67-71,共5页Journal of Transport Science and Engineering

基　　金：湖南省自然科学基金项目(07JJ3104)

摘　　要：盾构是穿越江河水下隧道的主要工程方法之一.针对南湖路湘江隧道盾构段围岩中岩溶具有成岩差、易软化、崩解以及石英质和砾石含量高特性的红层软岩、上软下硬的浅覆土等特征,分析了复杂地质条件下盾构施工的风险,提出了应对措施,其结果可为南湖路湘江隧道的设计和施工提供指导性建议.Shield surroundings of been analysised, tunneling is a major construction method to cross rivers. The special Xiangjiang River tunnel whose shield is a crossed in Nanhu Road have which includes karst caves, ＂red strata＂ with the features of weak dia- genetic process, suspcetible to be softened and can be easily disingtegrated,high content of Quartz and gravel and ＂upper-soft and lower-hard＂ stratum with small thickess of covering. After risks are analyzed for shield tunnel construction under these complex geological conditions, some measurments are put forward. The study can provide an in- structional reference to both design and construcation of the Changsha Xiangjiang tunnel at Nanhu Road.

关 键 词：隧道工程 大直径泥水盾构 软岩 措施 

分 类 号：O319.56[理学—一般力学与力学基础]