岩土工程学报2013，Vol.35Issue(z1)：108-112,5.
渗流条件下三维盾构隧道开挖面极限支护压力
3D limit support pressure solution for shield tunnel face subjected to seepage
摘要
Abstract
By adopting FE numerical simulation,the influence of water table line on the distribution of pore water pressure around the shield tunnel face is studied,and the influences of water table line,tunnel diameter,tunnel depth on the seepage force are obtained.The results show that the seepage force varies almost linearly with the water table line.By considering the average seepage force on the slide block,the face stability of shield tunnels is studied via trapezoidal wedge model,and a formula to calculate the limit support pressure under seepage condition is deduced.The seepage force shows great influence on the limit support pressure,and the total support pressure increases almost linearly with the water table line.The proposed model is used for the Qianjiang river shield tunnel project to calculate the limit support pressure of 5 selected typical sections,and the variation of support pressure is obtained.关键词
盾构隧道/开挖面稳定/支护压力/楔形体模型/渗流Key words
shield tunnel/ face stability/ support pressure/ wedge model/ seepage分类
建筑与水利引用本文复制引用
吕玺琳,李冯缔,黄茂松,焦齐柱,胡雯婷..渗流条件下三维盾构隧道开挖面极限支护压力[J].岩土工程学报,2013,35(z1):108-112,5.基金项目
国家杰出青年科学基金项目(50825803) （50825803）
国家自然科学基金青年科学基金项目(50908171) （50908171）
交通部科技项目(2009-353-333-340) （2009-353-333-340）
