摘要
某连拱隧道在中导洞施工时出现坍方。针对该隧道的工程实际情况,建立了数值分析模型,采用FLAC软件模拟了隧道施工力学行为,从围岩塑性区分布、位移情况以及锚杆和混凝土衬砌内力分布情况分析了隧道变形和坍塌发生的原因,并且结合工程实际提出了有效地处治方法。
During construction of the middle drift of a multi-arch tunnel, collapse accident occurred,According to the field geological and construction conditions, the numerical model is set up; and the commercial software FLAC is adopted to simulate the behaviors of the tunnel and surrounding rock. Based on the results of plastic zones in surround rocks, deformations in rock and linubg, and the inner forces within rock bolts and reinforced concrete lining, the deformation of the tunnel and the causes of tunnel collapse are analyzed. The corresponding effective remedy measures are proposed; and good results are achieved.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第1期102-106,共5页
Rock and Soil Mechanics
基金
湖南省交通科技项目(No.200436)。
关键词
连拱隧道
浅埋隧道
偏压
坍方
数值分析
multi-arch runnel
shallow runnel
unsymmetrical pressure
collapse
numerical analysis
作者简介
李志勇,男,1965年生，博士,教授级高工,主要从事公路与岩土工程的研究工作。E-maU：hnjtizy@yahoo．com.cn
