摘要
小净距重叠隧道施工顺序的选择是影响工程进度和施工安全的关键因素之一.以重庆市轨道10号线区间隧道、人民路支线公路隧道、轨道2号线出入通道所形成的三重叠小净距隧道群施工顺序为研究对象,采用MIDAS有限元数值模拟并结合现场监测,得出了不同施工顺序与围岩和支护结构的变形、应力之间的关系规律,较好地指导了施工作业.本研究成果可为今后类似工程提供参考.
The selection of the construction sequence of overlapping tunnels with small net distance is one of the key factors affecting the construction progress and safety.This paper takes three overlapping tunnels group with small spacing construction sequence formed by chongqing rail line 10 regional tunnel,Renmin Road secondary road tunnel,rail line 2 access channel as the research object.By using MIDAS finite element numerical simulation,combined with field monitoring,the different construction sequence is obtained and the deformation of surrounding rock and supporting structure,the relationship between the stress rule,to guide the construction work well.The research results can also provide reference for similar projects in the future.
作者
王先义
张金华
WANG Xianyi;ZHANG Jinhua(School of Traffic&Transportation,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《河南科学》
2020年第6期929-937,共9页
Henan Science
基金
重庆市技术创新与应用发展专项面上项目(cstc2019jscx-mscmX0116)
重庆曾家岩大桥隧道项目(横向项目)(20161037)。
关键词
三重叠小净距隧道
施工顺序
沉降
应力
three overlapping tunnels with small spacing
construction sequence
settlement
stress
