长江科学院院报2012，Vol.29Issue(11)：68-72,5.DOI:10.3969/j.issn.1001-5485.2012.11.015
盾构隧道壁后注浆压力对地表沉降的影响分析
Effect of Shield Tunnel Backfill Grouting Pressure on the Ground Surface Subsidence
孙闯 1张建俊 1刘家顺 1王敏1
作者信息
- 1. 辽宁工程技术大学土木与交通学院,辽宁阜新123000
- 折叠
摘要
Abstract
To intuitively understand the effect of shield tunnel backfill grouting pressure on the soil deformation and thus to control the ground surface deformation, numerical simulation was carried out by FLAC on the construction process of a river-crossing tunnel in Shanghai, and the effect of grouting pressure on tunnel segment floating was analyzed. It' s concluded that the soil disturbance varies largely under different grouting pressures and pressure distributions. The tunnel segments exhibits a trend of floating after the grouting slurry were hardened. Ground surface deformation could be effectively controlled when the grouting pressure is between 0. 2-0. 3MPa. The floating of tunnel segments is affected by the weight of itself, the depth of overburden soil, and the grouting pressure and pressure distribution. The research provides reference for the numerical simulation and construction of shield tunnels.关键词
隧道/注浆/土体/数值模拟/FLAC3DKey words
tunnel/ grouting/ soil/ numerical simulation/ FLAC3D分类
交通工程引用本文复制引用
孙闯,张建俊,刘家顺,王敏..盾构隧道壁后注浆压力对地表沉降的影响分析[J].长江科学院院报,2012,29(11):68-72,5.
