Stability Analysis and Support Design of Imam Reza Tunnel in Ardabil Sarcham Road by Numerical Methods
Abstract
Geological structures and performance of the geodynamic processes can affect engineering projects on their own. Hence, the stability analysis and designing methods for foreseeing the retaining and support system for tunnels are diverse and came from different points of view. So this study seeks to present stability analysis of Imam Reza tunnel in Ardabil Sarcham Road with a special focus on the impact of future earthquakes on its stability using numerical methods. In this study, first designing and operating the initial structure with the height of 5.5 m and a semi-circular cross section. Secondly, drilling with the height of 3m and the width of 7.34 m and with a rectangle cross section. For stabilization, Rock Mass Rating (RMR) geomechanical classification systems and methods used. At the stabilization level, the materials were examined in laboratory, regarding the properties of sides and roof of the tunnel and pressure on them. The results of physical and mechanical experiments shown that the compressive strength ranged from 400 kg/cm2 to 500 kg/cm2 on average. The elastic modulus is between 12 and 13 GPa for the rocks. The Cohesion (C) ranged from 4-5MPa to 5 MPa and the Angle of Internal Friction (φ) is between 60ᵒ and 50ᵒ.
Keywords
References
Carlos A. Jaramillo. Impact of seismic design on tunnels in rock – Case histories. Underground Space. Volume 2, Issue 2, PP 106-114, 2017. doi:10.1016/j.undsp.2017.03.004.
Hua-bing Zhao, Yuan Long, Xing-hua Li, Liang Lu. Experimental and numerical investigation of the effect of blast-induced vibration from adjacent tunnel on existing tunnel. KSCE Journal of Civil Engineering, Vol.20, No.1, pp 431–439,2016 doi: 10.1007/s12205-015-0130-9.
Jibson, R. W. Methods for assessing the stability of slopes during earthquakes -a retrospective. Engineering Geology, Vol.122, Issue 1-2, pp 43-50, 2011. DOI:10.1016/j.enggeo.2010.09.017.
Terzaghi, K. Theoretical Soil Mechanics. (1943). Published Online: 19 DEC 2007 doi: 10.1002/9780470172766.
S. J. Peng et al., "Application of Fuzzy Information Optimization Technology on Analysis of Loess Landslide Stability", Applied Mechanics and Materials, Vols. 321-324, pp. 2389-2395, 2013 doi:10.4028/www.scientific.net/AMM.321-324.2389.
I.-M.Lee, J.-K.Park Stability analysis of tunnel keyblock: a case study. Tunnelling and Underground Space Technology. Volume 15, Issue 4, pp 453-462, 2000. doi:10.1016/S0886-7798(01)00014-1.
P. Perazzelli and G. Anagnostou.Comparing the limit equilibrium method and the numerical stress analysis method of tunnel face stability assessment. Geotechnical Aspects of Underground Construction in Soft Ground – Viggiani (ed). pp. 463-475.2012 doi: 10.3929/ethz-a-010817186.
Jiading Wang, Youjiang Zeng, Yuanjun Xu and Kaiqiang Feng. Analysis of the influence of tunnel portal section construction on slope stability. GeoloGy, ecoloGy, and landscapes. Vol. 1, No. 1, PP 56–65. (2017) doi: 10.1080/24749508.2017.1301062.
Jin, Y. B., Cui, X. S., & Lu, X. F. Tibet Manla water high spillway tunnel intake slope stability analysis and treatment. Hydrogeology and Engineering Geology, 6, pp 39–41. (2000).
Fasihnikoutalab, Mohammad & Huat, Bujang & Asadi, Afshin & Daneshmand, Saman. Numerical stability analysis of tunnel by PLAXIS. EJGE. Vol. 17, Bund. D, PP 451-461, [2012].
Ming Xiao and Chen Zhao, “Stability Analysis of Steel Lining at Pressure Diversion Tunnel Collapse Zone during Operating Period,” Mathematical Problems in Engineering, Volume 2017, Article ID 3280414, 14 pages, 2017. doi:10.2017.1155/3280414
Xuansheng Cheng; Xiaoyan Zhang; Wenjun Chen; Weiwei Xu. Stability Analysis of a Cross-Sea Tunnel Structure under Seepage and a Bidirectional Earthquake. International Journal of Geomechanics/ Volume 17, Issue 9, 2017. doi:10.1061/(ASCE)GM.1943-5622.0000937.
Feng Yang, Xinlei Sun, Xiangcou Zheng, Junsheng Yang. Stability analysis of a deep buried elliptical tunnel in cohesive–frictional (c–) soils with a nonassociated flow rule. Canadian Geotechnical Journal, Vol. 54, No. 5: pp. 736-741, 2017. doi: 10.1139/cgj-2016-0523.
Jiading Wang, Youjiang Zeng, Yuanjun Xu & Kaiqiang Feng. Analysis of the influence of tunnel portal section construction on slope stability. Journal Geology, Ecology, and Landscapes. Volume 1, Issue 1, pp 56-65.2017 doi:10.1080/24749508.2017.1301062.
Samir Maghous, José E. B. Winiawer and Vanessa F. Pasa Dutra. Stability analysis of tunnels driven in jointed rocks by means of a homogenized limit analysis approach. International Journal for Numerical and Analytical Methods in Geomechanics. Volume 38, Issue 18. Pages 2009–2032. (2017). doi: 10.1002/nag.2302.
Xiaozhao Li and Yangsong Zhang. Finite Element Analysis of the Stability of Tunnel Surrounding Rock with Weak Rock Layer. Modern Applied Science. Vol.3 No. 12, pp22-27, (2009), doi: 10.5539/mas.v3n12p22.
Xiao-Li Yang and Rui . Limit Analysis of Stability of Twin Shallow Tunnels Considering Surface Settlement. KSCE Journal of Civil Engineering. (2017). doi: 10.1007/s12205-017-1398-8.
Kun Liu, Xinrong Liu, Zuliang Zhong and Li Yi.Analysis on Stress and Stability of Lining in Partially-blocked Tunnel Drainage System. Journal of Engineering Science and Technology Review, Vol 10, No 3 ,pp139-149 ,2017 doi: 10.25103/jestr.103.19.
K.G.Goshtasbi & S.F.Dehghan.Stability Analysis and Support Design of Glandroud Coal Mine Tunnel. 1 7™ International Mining Congress and Exhibition of Turkey- IMCET2001, pp265-268, 2001.
DOI: 10.28991/cej-030976
Refbacks
- There are currently no refbacks.
Copyright (c) 2018 Alireza Afradi, Siamak Rezazadeh
This work is licensed under a Creative Commons Attribution 4.0 International License.
