土工基础

›› 2019, Vol. 33 ›› Issue (1): 66-69.

• 工程实录 • 上一篇    下一篇

地铁联络通道施工引起围岩变形数值模拟及监测分析

田 野，印长俊，陈科亦   

  1. （湘潭大学，湖南湘潭 411105）
  • 收稿日期:2018-04-18 修回日期:2018-04-23 出版日期:2019-03-02 发布日期:2019-03-08
  • 作者简介:田 野（1992-），男，研究生在读，研究方向为岩土工程。

Numerical Simulation and Monitoring of Surrounding Rock Mass Deformation Induced by the Subway Communication Gallery Construction

TIAN Ye, YIN Changjun， CHEN Keyi   

  1. (University of Xiangtan, Xiangtan 411105)
  • Received:2018-04-18 Revised:2018-04-23 Online:2019-03-02 Published:2019-03-08

摘要： 联络通道的开挖是地铁隧道建设中的关键工序。以某地铁联络通道的施工为研究对象，根据施工计划、监测方案等资料，采用Midas/GTX NX针对地铁联络通道施工引起的围岩变形进行了数值模拟，结合监测数据进行对比得出：联络通道开挖过程中，受应力集中影响，盾构隧道与联络通道相接部位沉降最为显著，是施工中的重点监控对象；泵房纵向侧壁及通道与盾构管片相接处是主要侧移区域；联络通道中心线约15 m范围内，地表沉降量较大。

关键词: 联络通道, Midas/GTX NX, 地表沉降, 监测分析

Abstract: The excavation of the communication gallery is a key process in the construction of subway tunnels. This paper presents a case history of a communication gallery construction for a subway tunnel. The deformation of the rock mass surrounding the tunnel in the excavation process was numerically simulated by using Midas GTX NX software based on the actual construction sequence and calibrated with construction monitoring data. Based on the analytical and monitoring results, the following conclusions could be made: In the process of communication gallery excavation, because of stress concentration, maximum settlement could be observed at the joint of main tunnel and communication gallery. This area should be monitored. The joint between the longitudinal side of the pump house and the shielded tunnel supporting area is the main lateral deflection zone. Large surface subsidence will be occurred in area within 15 meters along the center alignment of the communication gallery.

Key words: communication gallery, midas/GTX NX, surface subsidence, monitoring analysis