土工基础

›› 2013, Vol. 27 ›› Issue (3): 66-69.

• 工程实录 • 上一篇    下一篇

节理岩体隧道破坏机理分析

陈高奎，刘成禹，张哲凌，巫克霖   

  1. (福州大学环境与资源学院 ,福州 350108)
  • 收稿日期:2012-10-03 出版日期:2013-06-20 发布日期:2013-06-26
  • 作者简介:陈高奎（1987-），男，陕西省渭南市蒲城人，福州大学环境与资源学院在读硕士，研究方向为地质工程。

Analysis of Failure Mechanisms of Tunnels in Jointed Rock Mass

CHEN Gaokui, LIU Chengyu, ZHANG Zheling, WU Kelin   

  1. (School of Environment and Resources, Fuzhou University，Fuzhou, 350108)
  • Received:2012-10-03 Online:2013-06-20 Published:2013-06-26

摘要： 节理岩体隧道的破坏与节理属性密切相关，以拟建石背坪隧道工程为例，采用离散元模拟技术研究了节理岩体隧道在不同节理倾角、不同岩块强度、不同节理强度、不同埋深及不同节理间距下的破坏机理。研究表明：节理倾角影响隧道的破坏方向，岩块强度、节理强度及埋深影响隧道的破坏程度，节理间距在一定范围内影响其破坏程度。

关键词: 节理岩体, 构造应力, 隧道, 破坏机理, 离散元法

Abstract: The failure mode of tunnels in the jointed rock mass has a close relationship with the rock joint characteristics. Based on a jointed rock mass model of a tunnel project in Fujian Province, the discrete element method was utilized to establish the failure mode of tunnels in jointed rock mass with various dip angels, rock fragment strengths, joints strengths, buried depths and joint spacing. The following results can be concluded: 1) the failure direction of tunnel in jointed rock mass is governed by the dip angle of the joints; 2) the rock fragment strengths, joints strengths and buried depths have an effect on the degree of damage of tunnels in jointed rock mass; 3) the joint spacing also might have an effect on the degree of damage of the tunnel.

Key words: Jointed Rock Mass, Tectonic Stresses, Tunnel Engineering, Failure Modes, Discrete Element Method