Kaya Kütlesi Poisson Oranı ve Elastisite Modulü Değerlerinin Tünel Etrafındaki Plastik Zon Sınırları üzerinde Etkileri

Year 2019, Issue: 16, 15 - 23, 22.06.2019

Eren Kömürlü , Serhat Demir

Abstract

Bu çalışmada kaya kütlesi Poisson oranı ve Elastisite Modulü değerlerinin izotrop, homojen

ve elastik ortamlarda kazılan tünellerin etrafında oluşan plastik zon üzerindeki etkileri sonlu

elemanlar analizleri ile numerik olarak incelenmiştir. Farklı arazi gerilmesi (birincil gerilme)

dağılımı koşullarında Poisson oranı artışı ile plastik zon sınırlarında daralma olduğu belirlenmiştir.

Benzer şekilde, kaya kütlesinin elastisite modulü değerleri artışı ile az olsa da plastik zon

sınırlarında daralma görülmüştür. Plastik zon kestirimlerinde kaya kütlelerinin Poisson oranı

değerlerinin ihmal edilmeyecek düzeyde sonuçları etkilediği değerlendirilmiştir.

Keywords

Tünellerde duraylılık, Tünel etrafında yenilme bölgesi, Plastik zon, Poisson oranı, Elastisite modulü

References

• Aksoy, C.O., Komurlu, E., 2017. Temel Kaya Mekaniği, Temel Madencilik Bilgileri e-kitabı, Mayeb, Ankara, pp. 1-69, ISBN: 978-605-64724-1-1
• Amadei, B., Stephansson O., 1997. Rock Stress and Its Measurements, Chapman&Hall, London.
• Aydan, Ö., Kawamoto, T., 2000. Assessing mechanical properties of rock masses by RMR rock classification method, Proceedings of the GeoEng 2000 Symposium, Melbourne, Australia, 19–24.
• Barla, G., Debernardi, D., Perinoi A., 2015. Lessons learned from deep-seated landslides activated by tunnel excavation. Geomechanics and Tunnelling, vol. 8, 394-401.
• Bieniawski, Z.T., 1989. Engineering Rock Mass Classifications, Mc Graw Hill; John Willey and Sons, Newyork, 237 pp.
• Brady, B.H.G., Brown, E.T., 2005. Rock Mechanics for Underground Mining, Kluwer Academic Publishers, Dordrecht.
• Gercek, H., 2007. Poisson’s ratio values for rocks, International Journal of Rock Mechanics & Mining Sciences, vol. 44(1), 1–13.
• Hoek E., 1998. Reliability of Hoek-Brown estimates of rock mass properties and their impact on design, International Journal of Rock Mechanics & Mining Sciences, vol. 35(I), 63-68.
• Hoek, E., 2001. Big Tunnels in Bad Rock. Journal of Geotechnical and Geoenvironmental Engineering, vol. 127(9): 726-740.
• Hoek, E., 2006. Kaya Mühendisliği (Turkish translation by Karakus&Basarir), Publication of Chambers of Mining Engineers of Turkey, Ankara, Turkey
• Huang, X., Zhang, J., Yang, L., Yang, S., Wang, X., 2016. Elastoplastic analysis of the surrounding rock mass in circular tunnel based on the generalized nonlinear unified strength theory, International Journal of Mining Science and Technology, vol. 26 (5), 819–823.
• Jianjun, W., Binsong, J., Qiang, Z., 2011. Elastic-Plastic-Brittle Unified Solution of Surrounding Rocks in Deep Openings, Procedia Engineering, vol. 26, 1225 – 1233.
• Karaman, K., Cihangir, F., Kesimal, A., 2015. A comparative assessment of rock mass deformation modulus, International Journal of Mining Science and Technology, vol. 25, 735–740.
• Kolymbas, D., 2005. Tunnelling and Tunnel Mechanics, Springer, Germany
• Komurlu, E., 2012. Effects of Rock and Granular Material Horizontal Stresses on Support Design. MSc Thesis, Karadeniz Technical University, Trabzon, Turkey, 2012 (In Turkish)
• Komurlu, E., Kesimal A., 2013. New Support Materials for Forepoling and Umbrella Applications (in Turkish). 3rd International Symposium and Exhibition on Underground Excavations for Transportation. 29-30 November, İstanbul/Turkey, pp. 423-435.
• Komurlu, E., Kesimal, A., 2017. Usability of Thin Spray-on Liners (TSL) for Akarsen Underground Mine in Murgul (in Turkish). MT Bilimsel, Journal of Underground Resources, vol. 12, 3-25.
• Komurlu E, Kesimal A., Hasanpour, R., 2015. In situ horizontal stress effect on plastic zone around circular underground openings excavated in elastic zones. Geomechanics and Engineering, vol. 8, 783-799.
• Konietzky, H., 2018. Simple analytical solutions for underground circular and elliptical openings, Introduction into Geomechanics (E-book), Editor: H. Konietzky, TU Bergakademie Freiberg
• Li, P., Fang, Q., Zhang, D., 2014. Analytical solutions of stresses and displacements for deep circular tunnels with liners in saturated ground, Journal of Zhejiang University-Science A (Applied Physics and Engineering), vol. 15(6), 395-404.
• Stacey, T.R., 2016. Addressing the consequences of dynamic rock failure in underground excavations, Rock Mechanics and Rock Engineering, vol. 49, 4091–4101.
• Shi, H., Bai, M., 2017. Plastic Zone Analysis of Deep-Buried, Noncircular Tunnel and Application on the High-Speed Railway in the Karst Area, Mathematical Problems in Engineering, vol. 2017, Article ID 9523267
• Shi, P., Zhang, D., Pan, J., Liu, W., 2016. Geological Investigation and Tunnel Excavation Aspects of the Weakness Zones of Xiang’an Subsea Tunnels in China, Rock Mechanics and Rock Engineering, vol. 49, 4853–4867.
• Stephansson, O., Zang, A., 2012. ISRM Suggested Methods for Rock Stress Estimation-Part 5: Establishing a Model for the In Situ Stress at a Given Site, Rock Mechanics and Rock Engineering, 45, 955-969.
• Rehman, H., Ali, W., Naji, A.M., Kim, J.J., Abdullah, R.A., Yoo, H.K., 2018. Review of Rock- Mass Rating and Tunneling Quality Index Systems for Tunnel Design: Development, Refinement, Application and Limitation, Apllied Sciences, 8, paper no: 1250
• Yan, L., Shihao, T.U., 2010. Rules of distribution in a plastic zone of rocks surrounding a roadway affected by tectonic stress, International Journal of Mining Science and Technology, vol. 20, 47–52.
• Yaralı, O., Muftuoglu, V.Y., 1992. Support design for rock bolts with numerical methods, Proceedings of 8th coal congress of Turkey, Zonguldak, pp. 279-290.
• Zareifard, M.R., Fahimifar, A., 2012. A new solution for shallow and deep tunnels by considering the gravitational loads, Acta Geotechnica Slovenica, vol. 9(2) 37-49.
• Zhu, C.Q., Yin, Z.Q., Li, C.M., Feng, R.M., 2016. Elastoplastic Analysis of Tunnel Surrounding Rocks based on the Statistical Damage Constitutive Model, Journal of Engineering Science and Technology Review, vol. 9 (3), 27-34.
• Zhu, M.Z., Yang, Y., Gao, F., Liu, J., 2018. Analytical Solution of Tunnel Surrounding Rock for Stress and Displacement Based on Lade–Duncan Criterion, Advances in Civil Engineering, vol. 2018, Article ID 5363658.