Document Type : Original Research Paper

Authors

1 M.Sc., Department of Underground Structures, Sahel Omid Iranian Consultant Engineers Co., Tehran, Iran

2 Ph.D., Water Research Institute, Tehran, Iran

3 Assistant Professor, Department of Mining engineering, Kashan University, Kashan, Iran

4 Professor, Department of Engineering Geology, Isfahan University, Isfahan, Iran

5 Assistant Professor, Department of Engineering Geology, Tehran University, Tehran, Iran

Abstract

Part 4 of Ghomroud tunnel is located in the Sanandaj-Sirjan geological zone. In this area, due to the existence of numerous faults, crushed zones and significant development of major and minor catchments, the tunnel has been encountered with the risk of groundwater influx. On the other hand, due to some limitations such as thick(up to 600 meters in some localities)overburden over the tunnel and the lack of exploratory drilling down to the tunnel level, it has been difficult to forecast and estimate the groundwater flow in the tunnel route. Due to the existence of numerous faults in part 4 of the Ghomroud tunnel ,encountering of the drilling machine (Double Shield TBM) with high-pressure water could cause influx of large amounts of water into the tunnel and collapse of rock masses in the crushed zones. It hence could cause deviation of the machine and drilling stop. In this article, the lack of data from boreholes led us to try investigating the development of groundwater flow in the tunnel based on geomorphological evidence. Analytical modeling and geomorphological field survey in the area show a relative consistency between geomorphology and volume of water flowing in the tunnel excavation. Therefore, according to measurements conducted on the water entering the tunnel, about 80 liters per second of water flowed into the tunnel, which is in agreement with geomorphological studies. Results show that the study of morphology and surface features could provide useful information in order to identify more precisely the hydrogeologic conditions of the area.

Keywords

Main Subjects

Aalianvari, A., Katibeh, H. and Sharifzadeh, M., 2012- Application of fuzzy Delphi AHP method for the estimation and classification of Ghomrud tunnel from groundwater flow hazard, Arabian Journal of Geosciences, Volume 5, Issue 2, pp. 275-284.
Alavi, N. M., 1994- Tectonics of the Zagros Orogenic belt of Iran : New data and interpretation. Tectonophysics, Vol. 229 (3): 211 – 238.
Barton,  N., 2000- TBM Tunnelling in jointed and faulted rock, Balkema, the Netherlands,  pp. 3–104, 147–149.
Celik, M. and Onsal, N., 1999- Grounwater Circulation In the allochthonous Limestone Unite Between Lake Gridev and Kaxanplnarl Spring, Antallya, South­western Turkey, Springer Hydrogeology journal. V.7. n.5. p. 483-489.
Cooper, A. H., Farrant, A. R. and Price, S. J., 2011- The use of karst geomorphology for planning, hazard avoidance and development in Great Britain,Geomorphology, Vol. 134 (1–2): 118–131.
Cvijić, J., 1893- Das Karstphänomen. Geographische Abhandlungen herausgegeben von A. Penck 5, 218–329.
De Waele, J. Plan, L and Audra, P., 2009- Recent developments in surface and subsurface karst geomorphology: An introduction, Geomorphology, Volume 106 (1-2), Pages 1–8.
Edgell, H., 1993- Karst and Water Resources in the Hyper arid Area of Northeastern Saudi Arabia, International Symposium on Water Resources in Karsts with Special Emphasis on Arid and Semi Arid zone. Iran. p. 320.
El Tani, M., 2003- Circular tunnel in a semi-infinite aquifer. Tunn Undergr Space Technol 18:49–55.
Ford, D. C. and Williams, P. W., 2007- Karst Hydrogeology and Geomorphology, John Wiley and Sons Ltd., Chichester, United Kingdom. 562 pp.
Freeze, R. A. and Cherry, J. A., 1979- Groundwater. Prentice-Hall, Englewood Cliffs, TIC: 217571.
Goodman, R., Moye D, Schalkwyk, A. and Javendel. I., 1965- Groundwater inflow during tunnel driving. Eng Geol 1:150–162.
Heuer, R. E., 1995- Estimating rock-tunnel water inflow. Proceedings of the Rapid Excavation and Tunneling Conference, June, pp 18–21.
Hezarkhani, A., 2006- Hydrothermal evolution of the Sar-Cheshmeh porphyry Cu–Mo deposit, Iran: evidence from fluid inclusions. Journal of Asian Earth Sciences, 28 (4), 409-422.
Janjic, M., 1962- Prilog poznavanju podzemnih fenomena u karstu (Contribution to knowledge of underground phenomena in karst). Vesnik Geozavoda Beograd Yugoslavia.
Katibeh, H. and Aalianvari,  A., 2009- Development of a New Method for Tunnel Site Rating from Groundwater Hazard Point of View, Journal of Applied Sciences, Vol 9 pp. 1496-1502.
Khorsandi, A. and  Miyata, T., 2007- Fault determination due to sinkhole array on Lar valley, northeast of tehran (Iran), ACTA CARSOLOGICA Journal,  , Volume 36, Issus 2, pp.,203-208.
Kusumayudha, B., Ten, M., Notosiswoyo, S. and Sayoga, R., 2000- Fractal Analysis of River, Cave Systems, and Topography of the Gunungsewu Karsts Area, Cen­tral Java, Indonesian, Springer Hydrogeology jour­nal. v.8. n.3, p. 271-278.
Lei, S., 1999- An analytical solution for steady flow into a tunnel. Ground Water 37:23–26.
Maurice, L., Atkinson, T. C., Williams, A. T., Barker, J. A. and Farrant, A. R., 2010- Catchment scale tracer testing from karstic features in a porous limestone, Journal of Hydrology, Vol. 389 (1-2): 31-41.
Mikulec, S. and Trumic, A., 1976- Engineering works in karst regions of Yugoslavia. Proceeding book Karst Hydrology and Water Resources, W.R.P., Colorado, USA.
Movahednejad, A. E., 2008- Deep tunnelling in fault zone case study in Kuhrang 3 water conveyance tunnel, World Tunnel Congress, Underground Facilities for Better Environment and Safety, India.
Raymer, J. H., 2003- Predicting groundwater inflow into hard-rock tunnels: estimating the high-end of the permeability distribution. RETC, pp 201–217.
SCE (Sahel Consultant Engineers), 2005- Engineering report: Engineering Geological Review and Summary Report on Adverse Geology Situations in Tunnel Driven Path, (Parts III and IV of Ghomroud Water Conveyance Tunnel), SHL 2019 UNGR MTUN RM RP 003 DO.
Sharifzadeh, M. and Hemmati Shaabani, A., 2006- TBM tunneling in adverse rock mass with emphasis on TBM jamming accident in Ghomroud water transfer tunnel, Van Cotthem, Charlier, Thimus and Tshibangu (eds), May 9-12, Liege, Belgium,  pp. 643-647.
Stocklin, J., 1968- Structural history and tectonics of Iran : a review. American Association Petroleum Geologists, Bulletin., Vol. 52 (7), 1229 – 1258.
Stocklin, J., 1977- Structural correlation of the Alpine range between Iran central Asia. Memoire Hors-Serve No.8 dela Societe Geologique de France, 8: 333-353.
Tseng, D., Tsai, B. and Chang, L., 2001- A case study on ground treatment for a rock tunnel with high groundwater ingression in Taiwan, International Journal of Tunnelling and Underground Space Technology, vol. 16,  175-183.
Veni, G., 1999- A Geomorphological Strategy for Conducting Environmental Impact Assessments in Karst Areas, Geomorphology, Vol. 31 (1): 151-180.
Wenner, D. and Wannenmacher, H., 2009- Alborz service tunnel in Iran: TBM tunneling in difficult ground conditions and its solution, proceeding of 8th Iranian Tunneling Conference, pp. 342-353.
White, W. B., 1988- Geomorphology and Hydrology of Karst Terrains, Oxford University Press, New York. 464 pp.
 Zarei, H. R., Uromiyehi A. and Sharifzadeh, M., 2010- Identifying geological hazards related to tunneling in carbonate karstic rock- Zagros, Iran, Arabian Journal of Geosciences, In press, Online available:Pp.1-8, DOI 10.1007/s12517-010-0218-y.