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隧道建设(中英文) ›› 2014, Vol. 34 ›› Issue (增刊): 129-134.DOI: 10.3973/j.issn.1672-741X.2014.S.021

• 研究与探索 • 上一篇    下一篇

隧道不同级别围岩监测与数值模拟分析

张礼仁1,2, 张友良1,2, 谭飞1,2, 刘登学1,2   

  1. (1.中国科学院武汉岩土力学研究所, 湖北 武汉 430071; 2.岩土力学与工程国家重点实验室, 湖北 武汉 430071)
  • 收稿日期:2014-04-24 修回日期:2014-05-10 出版日期:2014-08-15 发布日期:2014-08-11
  • 作者简介:张礼仁(1988—),男,湖北黄冈人,2011年毕业于山东科技大学,工程力学专业,硕士,从事隧道监测与数值模拟方面的研究。
  • 基金资助:

    国家自然科学基金(NO.11272330);留学回国人员科研启动基金(第41批)

Analysis on Monitoring and Numerical Simulation of Tunnel Surrounding Rocks of Different Grades

ZHANG Liren1,2, ZHANG Youliang1,2, TAN Fei1,2, LIU Dengxue1,2   

  1. (1. Institute of Rock and Soil Mechanics, Chinese Academy of Science, Wuhan 430071, Hubei, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Wuhan 430071, Hubei, China)
  • Received:2014-04-24 Revised:2014-05-10 Online:2014-08-15 Published:2014-08-11

摘要:

依托谷城至竹溪高速公路小漩隧道,针对不同围岩段的特点,对隧道地表沉降、洞内收敛变形及拱顶下沉等项目进行了现场监测与分析,研究不同级别围岩变形时程曲线和纵向分布曲线的基本规律。并利用有限元分析软件ABAQUS模拟不同围岩级别隧道开挖过程,将数值模拟结果与现场监测数据结合,分析围岩级别对隧道围岩稳定性的影响。结果表明: 围岩级别越高,隧道开挖过程中地表下沉和洞内变形越大,变形稳定的时间也越长。

关键词: 隧道, 围岩级别, 监测, 数值模拟

Abstract:

The ground surface settlement, convergence and crown settlement of Xiaoxun tunnel Guzhu expressway is monitored and analyzed in accordance with the characteristics of the surrounding rocks of different grades. The basic law of the timedependent curves and longitudinal distribution curves of the deformation of surrounding rocks of different grades are discussed. The excavation process of the tunnel in surrounding rocks of different grades is simulated by means of finite element software ABAQUS, and the influence of the surrounding rock grades on the stability of the surrounding rocks of the tunnel is analyzed by considering the numerical simulation results and the field monitoring data. The study results show that the higher the grade of the surrounding rocks is, the larger the ground surface settlement and the tunnel deformation during tunnel excavation will be, and the longer time it will take for the deformation to become stable.

Key words: tunnel, surrounding rock grade, monitoring, numerical simulation

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