Back Analysis on Stability of Surrounding Rock in Big-Span Road Tunnel
详细信息
- 责任者：Chen Dianqiang (Liaoning Institute of Nonferrous Geological Exploration ; Shenyang 110013 ; China) ; Hao Zhe
- 刊名：Journal of Liaoning Technical University (Natural Sciences)
- 出版年：2011
- 卷期：30(6)
- 关键词：隧道 ; tunnels ; 围岩稳定 ; adjoining rock stability
- 页码：p.866-869
- 图表：3 illus., 3 tables, 10 refs.
- 分类号：1702
- issnNo：ISSN1008-0562
- isbnNo：CN21-1379/N
摘要
In order to reveal the long-term stability characteristics of surrounding rock in a big span road tunnel, this study has derived theoretical equations and practical formulas for surrounding rock stability using theoretical analysis and measured data. On the basis of measured data, simplified geometry and mechanical models, the back analysis on the physical and mechanical parameters of surrounding rock was conducted. Therefore, the distribution of stress and displacement of surrounding rock was obtained for rock stability analysis. The study results show that this analytical calculation method is simple, practical and can derive the stability state of surrounding rock. It provides a useful reference for road tunnel analysis.