中文核心期刊
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中国科技核心期刊
RCCSE中国核心学术期刊
Journal of Chongqing Jiaotong University(Natural Science)

Journal of Chongqing Jiaotong University(Natural Science) ›› 2003, Vol. 22 ›› Issue (2): 20-23.

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Study on deformation character of the surrounding rock masses Concerning the influence of karst caves in the bottom of tunnel

ZHAO Ming-jie1，LIU Xu-hua2，AO Jian-hua2，WANG Biao2   

  1. 1.Chongqing Jiaotong University，Chongqing 400074，China; 2.Hubei Enshi Institute of Design for Communications，Hubei Enshi 445000，China
  • Received:2002-07-30 Revised:2002-10-09 Online:2003-06-15 Published:2015-05-18

隧道底部溶洞对围岩变形特性的影响分析

赵明阶1，敖建华2，刘绪华2，王彪2   

  1. 1.重庆交通学院河海建筑工程系，重庆400074; 2.湖北省恩施州交通规划设计院，湖北恩施445000
  • 作者简介:赵明阶(1967—),男,四川广元人,博士,副教授,从事岩土、隧道工程方面的教学科研工作.
  • 基金资助:
    重庆市重点科技攻关项目(2001-25-03); 湖北省恩施州318 国道朝东岩隧道项目部资助项目

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Abstract: Based on the excavation of Chaodongyan tunnel, a numerical analysis concerning the influence of karst caves in the bottom of tunnel on stability of the surrounding rock masses is carried out through using the ANSYS software system, and the yield initiation is assumed to occur following Druck-Prager failure criterion.The deformation character of the surrounding rockmass of tunnel was discussed.

Key words: karst caves, the surrounding rockmass of tunnel, the deformation characters

摘要： 运用二维弹塑性分析研究了隧道底部不同大小、不同距离的溶洞分布对隧道围岩周边变形的影响.研究结果表明:隧道底部溶洞对隧道顶、底边界的竖向位移有明显的影响,而对其水平位移无影响;对隧道侧壁的围岩的沿水平和竖向变形均有明显的影响;对应力集中的影响主要表现在隧道侧墙墙脚.

关键词: 岩溶, 隧道围岩, 变形特性

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