Evaluation of Water seepage Along Proposed Baghdad Metro Tunnel Across Tigris River


  • Aadil Abdulsalam Hamid Civil Engineering Department, Al-Nahrain University, Baghdad - Iraq
  • Haitham Alaa Husain Civil Engineering Department, Al-Nahrain University, Baghdad - Iraq




Baghdad Metro, Seepage Rate, Plaxis 3D, Water Seepage


Water seepage can cause serious problems in geotechnical engineering especially for construction under the water level. Baghdad metro tunnel is one of the leading vital projects to solve the major problem of crowding roadways in a highly population increase city like Baghdad. In this study, the seepage rate that will flow toward different selected points along the tunnel section across Tigris River was calculated during the excavation process, with the consideration of three different water levels of River at maximum, moderate, and minimum water depths. A three-dimensional model of the study has been modeled using the finite element software (PLAXIS 3D V20). The water seepage was observed for six different locations on each route of the tunnel. The study showed that the change of water depth in the river has no significant effect on the seepage – time curve shape. However, increasing the water level in River from minimum to maximum leads to increase the seepage rate about 15%.  


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Zhang Z., Zhang X., Sun Sh. & Liang Z. , 2019, A cross-river tunnel excavation considering the water pressure effect based on DEM, European Journal of Environmental and Civil Engineering,

Zhang, W., Dai, B., Liu, Z., Zhou, C., 2017. On the non-Darcian seepage flow field around a deeply buried tunnel after excavation. Bull. Eng. Geol. Environ. of the International Association of Engineering Geologists 2, no. 1: 39–56.

Pujades E., Jesus C., Enric V.S., Anna J., Victor V., Eduardo M.S., 2012, Hydraulic characterization of diaphragm walls for cut and cover tunnelling, Engineering Geology, Volume 125, Pages 1-10

P. Perazzelli , T. Leone, G. Anagnostou, 2014, Tunnel face stability under seepage flow conditions, Tunnelling and Underground Space Technology, Volume 43, pp 459-469.

Font-Capó, J., 2012. "Interaction between Ground Water and TBM (Tunnel Boring Machine) Excavated Tunnels", Ph. D. Thesis, Department of Geotechnical Engineering and Geosciences, Technical University of Catalonia, Catalonia, Spain.

Goodman, R.E., D.G. Moye, A. Van Schalkwyk, and I. Javandel. 1965. Ground water inflows during tunnel driving. Bulletin.

Katibeh H. and Aalianvari A. 2014. “Common Approximations to the Water Inflow into Tunnels”,

PhD thesis, Amirkabir University of Technology and Hamedan University of Technology.

L.Zhang J.A.Franklin, 1993, Prediction of Water seepage into rock tunnels: an analytical solution assuming an hydraulic conductivity gradient, Volume 30, Issue 1, Pages 37-46

Heuer, R.E., 1995. Estimating rock tunnel water inflow. In: Rapid Excavation and Tunneling Conference, pp. 41–60 (Chapter 3).

El Tani, M. 1999. Water inflow into tunnels. In Proceedings of the World Tunnel Congress ITA-AITES, Oslo, Norway, Balkema, 61–70.

Karlsrud, K., 2001. Water control when tunnelling under urban areas in the Olso region. NFF publication No. 12, 4, 27–33, NFF.

Moon, J., and G. Fernandez. 2010. Effect of excavation-induced groundwater level drawdown on tunnel inflow in a jointed rock mass. Engineering Geology 110, no. 3: 33–42.

Young-JinShin, Byoung-MinKim, Jong-HoShin, In-MoLee, 2010, The ground reaction curve of underwater tunnels considering seepage force, Tunnelling and Underground Space Technology Volume 25, Issue 4, July 2010, Pages 315-324

L. Zhang, D. Zhao, J. Wu, W. Yang, W. Wang, D. Xi, 2020, Prediction of water inflow in Tsingtao subsea tunnel based on the superposition principle, Tunnelling and Underground Space Technology, volume 97

NCCLR: National Center for Construction Labs and Researches, Baghdad, Iraq.

Mayoralty of Baghdad, Baghdad, Iraq.

PLAXIS 3D Manual (2020), Delt University of Technology & PLAXIS bv, Netherland.

Kai Su, Yafeng Zhou, Hegao Wu, Changzheng Shi, Li Zhou, 2017, An Analytical Method for Groundwater Inflow into a Drained Circular Tunnel , Groundwater Summit, Volume55, Issue5 , Pages 712-721.

Zhou, Y.F., K. Su, and H.G. Wu. 2014. Study of external water pressure estimation method for reinforced concrete lining of hydraulic tunnels. Yantu Lixue/Rock and Soil Mechanics 35, no. S2: 198–202, 210.

Isacc S. Alakaam, 2010, A study of some morphological characteristics of the Tigris River in the city of Baghdad, University of Baghdad – College of Science (Arabic language).

Yoo, C. and Kim, S. B., 2008. "Three-Dimensional Numerical Investigation of Multifaced Tunnelling in Water-Bearing Soft Ground", Canadian Geotechnical Journal, 45: 1467-1486, NRC Research Press.




How to Cite

Hamid, A. A., & Husain, H. A. (2021). Evaluation of Water seepage Along Proposed Baghdad Metro Tunnel Across Tigris River. Al-Nahrain Journal for Engineering Sciences, 24(2), 149–158. https://doi.org/10.29194/NJES.24020149