Prediction of Stresses Around Tunnel in Rock during Advancing TBM

https://doi.org/10.24237/djes.2020.13310

Authors

  • Dhuha H. Ali Department of Civil Engineering, College of Engineering, Diyala University, 32001 Diyala, Iraq
  • Thair H. Abdullah Department of Civil Engineering, College of Engineering, Diyala University, 32001 Diyala, Iraq
  • Hassan O. Abbas Department of Civil Engineering, College of Engineering, Diyala University, 32001 Diyala, Iraq

Keywords:

Tunnel, Clay stone, Numerical, Stress Distribution

Abstract

Drilling machines (TBM) used for civil engineering work in large towns to significantly reduce the harmful effects of expenditure on the earth's surface. The tunneling process complicated due to the dependence of this relationship on construction technology that lead to undesirable consequences such as damage to adjacent structures, so the use of the finite element method has become common to simulate construction stages model using the Hoek-Brown ,the methodology includes using the finite element method by constructing the model to predict the behavior of stresses during the tunnel construction stages and to collect the required data so that it is appropriate to the requirements of the region and to analyze the parameters of the numerical model entry and comparing the natural condition of the rocks during the various tunnel construction stages. During tunneling development, vertical stresses at the top and bottom of the tunnel are reduced while horizontal stresses are increased. Three vertical sections are selected to test the TBM tunnel 's impact on nearby rocks. The first section (x = 0) passes through the center of the tunnel. The second section is near the side edge of the tunnel whereas the third section is more or less selected than the edge of the tunnel. Progression of TBM is reflected through one to five phases. By conducting an axial symmetric FE analysis, the results of math measurement showed major changes in stress that occur in rock regions near the tunnel boundary mostly affects closeness to rocks. This increasing pressure decreases as you step horizontally away from the tunnel and the seams achieve exceedingly small values for lengths greater than 12 m from the edge of the tunnel.

Downloads

Download data is not yet available.

References

Huang Guang, Chou Wenge, Zhang Huijian, Pan Jianping. "Study on failure mechanism and cconstruction ccountermeasures of horizontal rock tunnel." Pioneering With Science & Technology Monthly,10(2012): 188-190. doi:10.3969/j.issn.0254-5357.2008.05.010.

Guo Qiliang, Wu Faquan, Qian Weiping, Zhang Yanshan. "Study on relationship between deformation of surrounding rock and in-suit stress in Wushaoling deep-buried railway tunnel." Chinese Journal of RockMechanics and Engineering, 11 (2006): 2194-2199. doi:10.3321/j.issn:1000-6915.2006.11.005.

Guan Baoshu. Key Points Set of Tunnel Engineering Construction." Beijing People's Communications Press, 2003. ISBN:9787114092428.

Waad A. Zakaria, Qasim A. Mahdi, Halah Hashim Muhammed, Prediction of Stresses and Settlement for TBM Tunnel Surrounding Soil, Diyala Journal of Engineering Sciences, Vol. 12, No. 04, pp 50-59(2019)

Dr. Ir. P. BOERAEVE. Introduction To The Finite Element Method (FEM).InstitutGrammeLIEGE,January 2010.

Waad A. Zakaria, NUMERICAL STUDY ON EFFECT OF A SUSPENDED BOULDER IN SOIL MATRIX ON A DOMESTIC FOUNDATION, Diyala Journal of Engineering Sciences, Vol. 07, No. 01, pp. 1-15(2014)

A. Vakili, "An improved unified constitutive model for rock material and guidelines for its application in numerical modeling,"Computers and Geotechnics, vol.80(2016),pp.261–285. https://doi.org/10.1016/j.compgeo.2016.08.020

A. Bobet, "Numerical methods in geomechanics, "Arabian Journal for Science and Engineering, vol. 35, no. 1B, 2010

M. Rasouli, “Engineering geological studies of the diversion tunnel, focusing on stabilization analysis and support design, Iran, "Engineering Geology, vol. 108(2009),pp.208–224. https://doi.org/10.1016/j.enggeo.2009.07.007

Hoek. E .. Brown. E.T .. Underground Excavations in Rock Inst. of Mining and Metallurgy. London. 1980. http://worldcat.org/isbn/0900488557

Brinkgrever, R.B. J.Finite Element Code for Soil and Rock Analysis, User Manual Plaxis 3D The Nederland's, Delft University of Technology by Plaxis bv. Version 2013.

Jing, L. & Hudson, J. Numerical methods in rock mechanics. InternationalJournal of Rock Mechanics and Mining Sciences,2002.39,409-427. https://doi.org/10.1016/S1365-1609(02)00065-5

Published

2020-09-10

How to Cite

[1]
Dhuha H. Ali, T. H. Abdullah, and H. O. Abbas, “Prediction of Stresses Around Tunnel in Rock during Advancing TBM”, DJES, vol. 13, no. 3, pp. 101–113, Sep. 2020.