| Issue |
E3S Web Conf.
Volume 131, 2019
2nd International Conference on Biofilms (ChinaBiofilms 2019)
|
|
|---|---|---|
| Article Number | 01027 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/e3sconf/201913101027 | |
| Published online | 19 November 2019 | |
Stability Analysis of Shallow and Bias Loess Tunnel Based on Finite Difference Method
1
College of Safety Engineering, Henan University of Engineering, Zhengzhou 451191, China
2
College of Zijin Mining, Fuzhou University, Fuzhou 350116, China
* Corresponding Author: LiBinglei; email: libinglei@fzu.edu.cn; phone:18805008222; liyongbing007@163.com hua709973654@163.com 2237716031@qq.com jxr_1999@163.com
Based on the Mohr-Coulomb elastic-plastic model and the practical engineering background of Mopanshan tunnel, this paper applies the finite-difference software FLAC3D to simulate and analyse the whole process of loess tunnel construction. Then, it analyses the stability of the surrounding rock and sup-port structure after partial excavation of the loess tunnel under the shallow burying and unsymmetrical load-ing condition. The study showed that in the absence of support, the shear failure occurred to the top/upper pilot tunnel of the tunnel face, the failure zone under tensile stress happened to the shallow soil of the earth surface, and the soil of tunnel face appeared to be damaged. Finally, according to the analysis results, a rea-sonable construction method suitable for the shallow and bias loess tunnel is determined.
© The Authors, published by EDP Sciences, 2019
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