Volume 4, Issue 2, March 2019, Page: 67-74
Numerical Analysis on the Stability of Layered Surrounding Rock Tunnel Under the Conditions of Different Inclination Angle and Thickness
Wang Jingyuan, School of Civil Engineering, Xi’an Technological University, Xi’an, China
Deng Xianghui, School of Civil Engineering, Xi’an Technological University, Xi’an, China
Cao Weiping, School of Civil Engineering, Xi’an Technological University, Xi’an, China
Received: Mar. 26, 2019;       Accepted: Apr. 27, 2019;       Published: May 31, 2019
DOI: 10.11648/j.ajtte.20190402.14      View  103      Downloads  17
Abstract
To study the relationship between the stability of layered surrounding rock tunnel and the thickness and inclination angle of the layered rock, using the discrete element analysis software UDEC, the deformation and stress characteristics of layered surrounding rock tunnel are analyzed under different inclination angle and thickness conditions after the tunnel excavation. Meanwhile, the influence of different inclination angle and thickness on the stability of layered surrounding rock tunnel is studied. The results show that when the layer thickness and the excavation span are the same, the vertical displacement, horizontal displacement and maximum principal stress of the surrounding rock of the tunnel show a low of increasing first and then decreasing with the increase of the inclination angle of the structural plane. When the inclination angle and excavation span are same, the vertical displacement, horizontal displacement and maximum principal stress of layered surrounding rock of the tunnel gradually decrease with the increase of the layer thickness. When the inclination angle of the structural plane is 30°, the vertical displacement of the surrounding rock of the layered surrounding rock tunnel is the largest; When the inclination angle of the structural plane is 45°, the horizontal displacement of the surrounding rock of the layered surrounding rock tunnel is the largest; When the inclination angle of the structural plane is 45°, the layered surrounding rock tunnel principal stress is the largest.
Keywords
Layered Surrounding Rock Tunnel, Inclination Angle, Thickness, Stability
To cite this article
Wang Jingyuan, Deng Xianghui, Cao Weiping, Numerical Analysis on the Stability of Layered Surrounding Rock Tunnel Under the Conditions of Different Inclination Angle and Thickness, American Journal of Traffic and Transportation Engineering. Vol. 4, No. 2, 2019, pp. 67-74. doi: 10.11648/j.ajtte.20190402.14
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
Tan xin, Fu helin, Chen chen, Zhao minghua, Liu yunsi (2016). Numerical simulation analysis of tunnel in layered rock mass. Journal of Railway Science and Engineering 13 (06), 1108-1113.
[2]
Liu Hongbing (2013). Analysis of impact on tunnels stability with layered rocks. Highway Engineering 38 (04), 167-169+182.
[3]
Xia binwei, Chen guo, Kang yong, Zhou dongping (2010). Deformation characteristic and stability analyses of layered rockmass. Hydrogeology and Engineering Geology 37 (04), 48-52.
[4]
Geng (2003). Daxin, Yang Linde. Mechanical characteristics of layered rock mass and numerical modeling. Underground Space 23 (04), 380-387. (in Chinese)
[5]
Yang Chaofeng (2018). Stability Analysis of Tunnel Surrounding Rock Mass in Layered Rock Based on Discrete Element Method. Journal of Luoyang Institute of Science and Technology (Natural Science Edition) 28 (02), 28-32.
[6]
Zhou Kefeng, Li Yuzhi, Liu Junyi (2012). Numerical analysis of structure plane characteristic for strength of stratified rock mass. Journal of Central South University (Science and Technology) 43 (04), 1424-1428.
[7]
Jia Peng, Tang Chunan, Yang Tianhong, Wang Shuhong (2006). Numerical stability analysis of surrounding rock mass layered by structural planes with different obliquities. Journal of Northeastern University (Natural Science) (11), 1275-1278.
[8]
Zhao Jingeng (2011). Study on stability of large-section tunnel of layered rock mass by joint inclination angle. Railway Engineering (09), 58-61.
[9]
Song Chengke, Wang Chenghu, Huang Luyuan, et al (2012) Numerical Simulation of Influence of Structural Plane Distribution Characteristic on Deformation of Tunnel’s Surrounding Rock. Journal of Disaster Prevention and Mitigation Engineering 32 (5), 611.(in Chinese)
[10]
Ou Erfeng, Ma Xuening, Yan Songhong (2018). Research on the Seismic Response Characteristics of Railway Tunnel in Horizontal Layered Surrounding Rock. Journal of Railway Engineering Society 35 (05), 88-93.
[11]
Wang Yonggang, Ding Wenqi, Jia Shanpo, Zou Chensong (2017). Anisotropic model of layered rock mass considering characteristics of structual interface. Journal of Highway and Transportation Research and Development 31 (10), 85-92.
[12]
Wang Linfeng, Tang Hongmei, Tang Fen, Ye Siqiao (2017). Failure mechanism of gently inclined bedding rock mass slopes with complex fissures. Chinese Journal of Geotechnical Engineering 39 (12), 2253-2260.
[13]
Wang Hui, Yang Shuangsuo, Niu Shaoqing (2016). Deformation Mechanism of Roadway with Layered Compound Strata and Its Control. Technology. Journal of Taiyuan University of Technology 47 (05), 605-612.
[14]
JTGD70/2-2014. The Code for Design of Road Tunnel, Chinese standard, China, 2014.
[15]
Z. X. Zhang, Y. Xu, P. H. S. W. Kulatilake et al (2012). Physical Model Test and Numerical Analysis on the Behavior of Stratified Rock Masses during Underground Excavation. International Journal of Rock Mechanics and Mining Sciences 49 (49).
Browse journals by subject