Hydrodynamic behavior of Soremeh Carbonate Formation on groundwater inflow to Nowsud Tunnel in Zimkan valley region, Kermanshah
Subject Areas :H.R. Nasseri 1 , N. Bayat 2 * , J. Ezzati Feyz 3
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Keywords: Karst aquifer, Nowsud Tunnel, Conduit flow, Recession curve,
Abstract :
Groundwater control is an important issue during underground excavation in fractured rocks. More than any other factor, the lack of groundwater control can cause costs to rise. In this study, the characteristics of the Surmeh Formation in Zimkan aquifer were analyzed using the recession curve of discharge water from the tunnel. The results show that behavior of the recession curve of discharge water from the tunnel is similar to discharge of the conduit flow system of karst springs. In the first seven days, the slope of the recession curve was high and equal to 0.041, but over time in considering to progress of tunnel excavation and 41 meters groundwater table drawdown in karstic aquifer of Surmeh Formation; the slope of the recession curve decreased and it became similar to diffuse flow system of the karstic aquifer. In the recession curve of discharge water from the Nowsud Tunnel, all three porous systems, including conduit, semi conduit and diffuse are properly identifiable in time intervals of seven, 48, and 87 days respectively. with respect to similarities in the behavior of discharge water from the tunnel with karst springs, the hydrograph of recharge water into the tunnel can be used as a discharge below the base level of the karst hydrologic system in order to assess the dynamic reserve of the upper karst aquifer (above the tunnel level).
آقانباتی، ع.، 1383. زمین‌شناسی ایران. انتشارات سازمان زمین‌شناسی و اکتشافات معدنی کشور.640 .
بیات، ن.، 1394. ارزیابی توانایی روش‌های تجربی، تحلیلی و بیلان در برآورد آب ورودی به قطعه دوم تونل زاگرس– کرمانشاه. پایان‌نامه کارشناسی ارشد آب‌شناسی، دانشکده علوم زمین، دانشگاه شهید بهشتی. 155.
سازمان زمین‌شناسی کشور، 1386. نقشه زمین‌شناسی غرب پاوه با مقیاس 1:100000.
شرکت ملی نفت ایران، 1388. نقشه زمین‌شناسی باینگان با مقیاس 1:100000.
مهندسين مشاور ایمن‌سازان، 1394- الف. گزارش هيدروژئولوژي تونل قطعه دوم تونل نوسود.
مهندسین مشاور ایمن‌سازان، 1394- ب. گزارش زمین‌شناسی تکمیلی، هیدروکلیماتولوژی، هیدروژئولوژی، آماربرداری ادواری گمانه‌ها و منابع آب‌زیرزمینی مسیر تونل انتقال آب نوسود.
مهندسين مشاور پارس کانه کیش، 1385. مطالعات هيدروژئولوژيکي بخش دوم تونل زاگرس.
مهندسين مشاور ساحل، 1385. گزارش مطالعات زمین‌شناسی مهندسي مسير قطعه دوم تونل نوسود.
مهندسین مشاور لار،1383. مطالعات مرحله يک تونل انتقال آب نوسود.
ناصری، ح.ر.، بیات، ن.، ایزدی کیان، ل.، و علیجانی، ف.، 1397. نقش ساختارهای تکتونیکی در هدایت آب‌های زیرزمینی به قطعه دوم تونل انتقال آب زاگرس – استان کرمانشاه. فصل‌نامه زمین‌شناسی ایران، سال11، شماره 45.
Atkinson, T.C., 1977. Diffuse flow and conduit flow in limestone terrain in Mendip Hills, Somerset (Great Britain). Journal of Hydrology, 35, 93-10
Bonacci, O., 1993. Karst springs hydrographs as indicators of karst aquifers. Journal of Hydrological Sciences, 38, pp 51-62. https://doi.org/10.1080/02626669309492639
Fernandez, G. and Moon, J., 2010. Excavation-induced hydraulic conductivity reduction around a tunnel – part 1: Guideline for estimate of groundwater inflow rate. Journal of Tunneling and Underground Space Technology, 25, 560-566. DOI: 10.1016/j.tust.2010.04.001.
Foladgar, A., 2003. Introduction of Kuhrang tunnel project and excavation methods. In: 6th Iranian Tunneling Conference, Tehran, Iranb.
Komac, B., 2006. The Karst Springes of Kanin Massif Kra Ki Izvir Pod Kanin Skim Pograje. .http://www.zrc-sazu.si/giam/zbornik/komac41
Korkmaz, N., 1990. The Estimation of groundwater recharge from spring hydrographs. Journal of Hydrological Sciences, 35, 209-217.
Li, D., Li, X., Li, Ch., Huang, B., Gong, F. and Zhang, W., 2009. Case studies of groundwater flow into tunnels and an innovative water-gathering system for water drainage. Journal of Tunnelling and Underground Space Technology. 24, 260-268.
Li, X. and Li, Y., 2014. Research on risk assessment system for water inrush in the karst tunnel construction based on GIS: Case study on the diversion tunnel groups of the Jinping II Hydropower Station. Journal of Tunnelling and Underground Space Technology, 40, 182–191.
Maillet A., 1905. Essais d’Hydraulique Souterraine et Fluviale. Herman, Paris, France.
Mudry, J., 1997. Role of karstification and rainfall in the behavior of a heterogeneous karst system", Journal of Environmental Geology, 114-123.
Ramsay J. and Huber, M., 1987. The Techniques of Modern Structural Geology, 2; Folds and Fractures, Ramsay, Academic Press; 1 edition.
Shahriar, K., Sharifzadeh, M. and Khademi, H.J., 2008. Geotechnical risk assessment based approach for rock TBM selection in difficult ground conditions. Journal of Tunneling and Underground Space Technology, 23, 318–325.
Zarei, H.R., Uromeihy, A. and Sharifzadeh, M., 2012. Identifying geological hazards related to tunneling in carbonate karstic rocks - Zagros, Iran. Arabian Journal of Geosciences, 5. pp 457–464. DOI 10.1007/s12517-010-0218-y.
Zarei, H.R., Uromeihy, A. and Sharifzadeh M., 2011. Evaluation of high local groundwater inflow to a rock tunnel by characterization of geological features. Journal of Tunneling and Underground Space Technology, 26, 364–373.
Zhang, J. and Chen, G., 1988. Some new ideas on the prediction of tunnel inflow in Karst area by water balance method. In: IAH 21th Congress on Karst Hydrogeology and Karst Environment Protection, 10–15 October, China.