西南交通大学学报2013，Vol.48Issue(3)：423-427,434,6.DOI:10.3969/j.issn.0258-2724.2013.03.005
黏土隧道小导管注浆离心机模型试验
Centrifuge Model Test of Clay Tunnel with Embedded Small Duct Grouting
摘要
Abstract
Plane strain centrifuge model tests were carried out to investigate the influence of small duct grouting range on tunnel stability and ground subsidence.The consolidation principle and performance optimization of advanced duct grouting were discussed.The tests were carried out in a circular cavity with stiff resin inclusions embedded around the periphery of the tunnel in over-consolidated clay in plane strain.The experimental results show that with the extension of ducts' circumferential setting range,tunnel stability is improved,tunnel plastic zone and slip plane transfer from tunnel crown to its invert,and deep soil becomes involved in bearing load.The shoulder reinforcement scheme is one of economic ways to improve the consolidation effect in accordance with the findings.When the coverspan ratio equals to 2,this scheme can be reduce the maximum ground subsidence in clay tunnel construction by 10％.关键词
隧道/小导管注浆/地面沉降/离心机模型试验Key words
tunnel/small duct grouting/ground subsidence/centrifuge model test分类
交通工程引用本文复制引用
许明..黏土隧道小导管注浆离心机模型试验[J].西南交通大学学报,2013,48(3):423-427,434,6.基金项目
中央高校基本科研业务费专项资金资助项目(CDJZR10200022) （CDJZR10200022）
国家自然科学基金资助项目(51109231) （51109231）
