• 中国科学引文数据库(CSCD)来源期刊
  • 中文核心期刊中文科技核心期刊
  • Scopus RCCSE中国核心学术期刊
  • 美国EBSCO数据库 俄罗斯《文摘杂志》
  • 《日本科学技术振兴机构数据库(中国)》
二维码

隧道建设(中英文) ›› 2015, Vol. 35 ›› Issue (1): 41-45.DOI: 10.3973/j.issn.1672-741X.2015.01.007

• 研究与探索 • 上一篇    下一篇

基于块体理论的隧道围岩稳定性分析

张昱辉1, 郭吉平2, 孔凡林3   

  1. (1. 同济大学土木工程学院地下建筑与工程系, 上海 200092; 〖JZ〗2. 贵州独平高速公路有限公司, 贵州贵阳 550001; 3. 重庆市建筑科学研究院, 重庆 400020)
  • 收稿日期:2014-10-15 修回日期:2014-12-11 出版日期:2015-01-19 发布日期:2015-02-09
  • 作者简介:张昱辉(1991—),男,浙江衢州人,同济大学土木工程专业在读硕士,研究方向为隧道结构加固设计。
  • 基金资助:

    重庆市自然科学基金计划(CSTC,2009BB6245); 第54批博士后基金面上资助(2013M541542)

Analysis on Stability of Surrounding Rock of Tunnel Based on Block Theory

ZHANG Yuhui1, GUO Jiping2, KONG Fanlin3   

  1. (1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Guizhou Duping Highway Co., Ltd., Guiyang 550001, Guizhou, China;  3. Chongqing Construction Science Research Institute, Chongqing 400020, China)
  • Received:2014-10-15 Revised:2014-12-11 Online:2015-01-19 Published:2015-02-09

摘要:

为了解决隧道工程施工中围岩稳定性分析这一工程难题,依托某在建公路隧道,基于地质素描与数理统计分析工作,精细化描述节理产状、间距、填充物、黏聚力等特征,并利用三维重构技术建立基于节理特征的隧址区地层模型,最后利用块体理论检索了无支护、有支护工况下隧道临空面潜在的关键块体,分析了滑移形式和安全系数,并对支护参数进行了优化,得知原设计支护强度富余,适当优化后仍可确保结构安全。

关键词: 隧道工程, 块体理论, 围岩稳定性分析

Abstract:

The occurrence, spacing, filler, cohesive force and other characteristics of the joints of the surrounding rock of a highway tunnel under construction are described in detail on basis of geological sketches and mathematical statistics work, so as to solve the problems in the analysis on the stability of the surrounding rocks in tunnel construction. Then the model of the strata in the tunnel site, which is based on the joint properties, is established by means of threedimensional reconstruction technology. Finally, the potential critical blocks in the free face under nonsupport condition and under support condition are examined by means of block theory, the slip mode and the safety factor are analyzed, and the supporting parameters are optimized. It is concluded that the strength of the designed support is higher than needed and that the safety of the structure can also be guaranteed when the supporting parameters are appropriately optimized. 

Key words: tunnel engineering, block theory, stability of surrounding rock

中图分类号: