Authors: Shafiei, A; Dusseault, MB


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Shafiei, A & Dusseault, MB 2008, 'Predicting Squeezing Potential Along the First 16 Kilometres of the Qomroud Long Tunnel Project in Iran Using Empirical Criteria', in Y Potvin, J Carter, A Dyskin & R Jeffrey (eds), SHIRMS 2008: Proceedings of the First Southern Hemisphere International Rock Mechanics Symposium, Australian Centre for Geomechanics, Perth, pp. 85-101,

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Central Iran can be described as an arid region which suffers from water shortage and very limited water supply. The Dez-Qomroud tunnel projects will convey water from the adjacent Dez Highlands to a central Iran watershed known as Qomroud in order to satisfy the water needs. In this article, we first highlight the engineering geology, rock mass properties and intact rock properties of the first 16 km of the Qomroud Long Tunnel (QLT), a portion of the Dez-Qomroud tunnel projects, and then we assess this section for squeezing ground condition potential using available empirical relations and criteria published in the literature. Some mitigation measures are recommended in order to treat the squeezing ground condition in the identified problem bearing sections along the studied tunnel.

Aydan, O., Akagi, T. and Kawamoto, T. (1993) The squeezing potential of rock around tunnels: theory and prediction. Rock Mechanics and Rock Engineering, 2, pp. 137–163.
Aydan, O., Akagi, T. and Kawamoto, T. (1996) The squeezing potential of rock around tunnels: Theory and prediction with examples taken from Japan. Rock Mechanics and Rock Engineering, 29(3), pp. 125–143.
Barla, G. (1995) Squeezing rocks in tunnels. ISRM News Journal, 3/4, pp. 44–49.
Barla, G. (2001) Tunnelling under squeezing rock conditions. Tunnelling mechanics, In: Kolymbas (editor), Euro-summer-School in Tunnel Mechanics, Innsbruck, 2001, Logos Verlag, Berlin, pp. 169–268.
Barla, G. and Pelizza, S. (2000) TBM tunnelling in difficult ground conditions. In GeoEng2000 – An International Conference on Geotechnical and Geological Engineering, Melbourne, Australia, 20 p.
Barton, N.R., Lien, R. and Lunde, J. (1974) Engineering classification of rock masses for the design of tunnel support. Rock Mechanics, 6(4), pp. 189–239.
Bieniawski, Z.T. (1989) Engineering rock mass classifications. New York: Wiley.
Bieniawski, Z.T. (1976) Rock mass classification in rock engineering. In Exploration for rock engineering, proceedings of the symposium, Cape Town, Z.T. Bieniawski (editor), 1, pp. 97–106.
Dalgıc, S. (2002) Tunnelling in squeezing rock, the Bolu tunnel. Anatolian Motorway, Turkey, Engineering Geology, 67, pp. 73–96.
Deere, D.U., Hendron, A.J., Patton, F.D. and Cording, E.J. (1967) Design of surface and near surface construction in rock. Proceedings 8th US Symposium On: Failure and breakage of rock.
Farrokh, E., Mortazavi, A. and Shamsi, G. (2006) Evaluation of ground convergence and squeezing potential in the TBM driven Ghomroud tunnel project. Tunnelling and Underground Space Technology, pp. 504–510.
Goel, R.K., Jethwa, J.L. and Paithakan, A.G. (1995) Tunnelling through the young Himalayas – a case history of the Maneri-Uttarkashi power tunnel. Engineering Geology, 39, pp. 31–44.
Hoek, E. (2001) Big tunnels in bad rock. ASCE Journal of Geotechnical and Geo-environmental Engineering, Vol. 127(9), pp. 726–740.
Hoek, E. and Marinos, P. (2000) Predicting tunnel squeezing problems in weak heterogeneous rock masses. Tunnelling and Underground Space Technology, Part 1, pp. 45–51 and Part 2, pp. 33–36.
Hoek, E., Kaiser, P.K. and Bawden, W.F. (1995) Support of underground excavations in hard rock. Rotterdam: Balkema.
ISRM (1981) Suggested methods for rock characterization, testing and monitoring, ISRM commission on testing methods. E.T. Brown (editor) Oxford, Pergamon.
Kolymbas, D., Fellin, W. and Kirsch, A. (2006) Squeezing due to stress relaxation in foliated rock. International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 30, pp. 1357–1367.
Kovari, K. and Staus, J. (1996) Basic considerations on tunnelling in squeezing ground. Rock Mechanics and Rock Engineering, 29(4), pp. 203–210.
Muir Wood, A.M. (1972) Tunnels for Road and Motorways. Quarterly Journal of Engineering Geology, 5, pp. 111–126.
ÖNORM B 2203 (1994) Untertagebauarbeiten, Werkvertragnorm, Entwurf.
Palmstrøm, A. (1996a) Characterizing rock masses by the RMi for use in practical rock engineering, Part 1: The development of the Rock Mass index (RMi). Tunnelling and Underground Space Technology, 11(2), pp. 175–188.
Palmstrøm, A. (1996b) Characterizing rock masses by the RMi for use in practical rock engineering, Part 2: Some practical applications of the rock mass index (RMi). Tunnelling and Underground Space Technology, 11(3), pp. 287–303.
Schubert, W. (1996) Dealing with squeezing conditions in Alpine tunnels. Rock Mechanics and Rock Engineering, 29(3), pp. 145–153.
Shafiei, A., Dusseault, M.B., Sani, F.F. and Sotoudeh, M. (2008) Qomroud long tunnel project in Iran: Rock mass characterization along the first 10.40 km. Paper ARMA 2008-052, In 42nd US Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, held in San Francisco, June 29-July 2.
Singh, B. and Goel, R.K. (1999) Rock mass classification - A practical approach in civil engineering. Elsevier Science Ltd., UK, 267 p.
Singh, B., Jethwa, J.L., Dube, A.K. and Singh, B. (1992) Correlation between observed support pressure and rock mass quality. Tunnelling and Underground Space Technology, 7, pp. 59–74.
Steiner, W. (1996) Tunnelling in squeezing rocks: case histories. Rock Mechanics and Rock Engineering, 29(4), pp. 211–246.
Stocklin, J. (1968) Structural history and tectonics of Iran: A review. AAPG Bulletin, 52, pp. 1229–1258.
Terzaghi, K. (1946) Rock defects and loads in tunnel supports. In rock tunnelling with steel supports, R.V. Proctor and T.L. White (editors), The Commercial Shearing and Stamping Company, Youngstown, Ohio, pp. 17–99.
Terzaghi, K. (1950) Geologic aspects of soft ground tunnelling. In Applied Sedimentation, Chapter 11, (editor) P.D. Trask, John Wiley and Sons.
Yassaghi, A. and Salari-Rad, H. (2005) Squeezing rock conditions at an igneous contact zone in the Taloun tunnels, Tehran-Shomal freeway, Iran: a case study, International Journal of Rock Mechanics and Mining Sciences, 42, pp. 95–108.

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