نشریه علمی هیدرولیک

نشریه علمی هیدرولیک

تأثیر موقعیت هسته رسی در سد خاکی بر تحلیل احتمالاتی پایداری در شرایط افت سریع مخزن

نوع مقاله : مقاله کامل (پژوهشی)

نویسندگان
1 استادیار گروه عمران دانشکده مهندسی دانشگاه صنعتی خاتم الانبیاء بهبهان
2 دانشیار گروه عمران دانشگاه صنعتی خاتم الانبیا بهبهان
چکیده
در مهندسی عمران کاربردی، آنالیز پایداری شیب و تحلیل تراوش اغلب با استفاده از یک رویکرد قطعی انجام می شود، که در آن خواص خاک ثابت فرض می شود. با این حال، این فرض ساده‌گرایانه نمی‌تواند عدم قطعیت‌های ذاتی مرتبط با مصالح و مدل‌های مورد استفاده برای تحلیل آن را توضیح دهد. گنجاندن ماهیت تصادفی ویژگی‌های خاک، به جای تکیه صرف بر مقادیر قطعی، می‌تواند نمایش دقیق‌تری از رفتار سیستم ارائه دهد و منجر به تصمیم‌گیری آگاهانه‌تر شود. همچنین، پایداری سدهای خاکی یک نگرانی حیاتی است، زیرا شکست چنین سازه هایی می تواند عواقب فاجعه باری داشته باشد. هدف این مطالعه ارائه یک درک جامع از عواملی است که بر پایداری و عملکرد کلی سدهای خاکی با تمرکز بر نقش مکان هسته رسی تأثیر می‌گذارند. برای این تحقیق سد صیدون در ایران توسط نرم افزار Slide2 در شرایط تخلیه سریع مخزن مورد تجزیه و تحلیل قرار گرفته است. نتایج نشان می دهد که جابجایی هسته رسی از سمت بالادست به سمت پایین دست سد باعث افزایش ضریب ایمنی و قابلیت اطمینان بالادست می شود. همچنین تحلیل حساسیت نشان می دهد که زاویه اصطکاک پوسته سد دارای بیشترین همبستگی خطی با ضریب ایمنی شیب است.
کلیدواژه‌ها

موضوعات


Ahadiyan, J., Bahmanpouri, F., Adeli, A., Gualtieri, C. & Khoshkonesh, A. (2022). Riprap Effect on Hydraulic Fracturing Process of Cohesive and Noncohesive Protective Levees. Water Resources Management, 36(2), 625-639. https://doi.org/10. 1007/s11269-021-03044-6.
Ahmed, A.T. & Elsanabary, M.H. (2015). Hydrological and environmental impacts of Grand Ethiopian Renaissance Dam on the Nile River. In Proceedings of the Eighteenth International Water Technology Conference, IWTC18, Sharm El Sheikh, Egypt, 12-14.
Akbas, S.O. & Kulhawy, F.H. (2010). Characterization and estimation of geotechnical variability in Ankara clay: a case history. Geotechnical and Geological Engineering28, 619-631.
Alonso, E. & Pinyol N. (2009). Slope stability under rapid drawdown conditions. First Italian Workshop on Landslides, Napols, 11–27.
Asadi, M. & Khazaei, J. (2014). Seepage analysis in body and foundation of Dam using the Seep/3D and Seep/W. Journal home page: http://www. journalsci. com ISSN, 2322, 326X.
Berilgen, M.M. (2007). Investigation of stability of slopes under drawdown conditions. Comput Geotech, 34, 81–91.
Calamak, M., Yilmaz, A.N. & Yanmaz, A.M. (2018). Performance evaluation of internal drains of earthen dams. Journal of Performance of Constructed Facilities, 32(6), 04018085, https:// doi.org/10.1061/(ASCE)CF.1943-5509.0001232.
Combelles, J., Goube, A., Llopis, N. & Paccard, M. (1985). Measures to improve the safety of hydraulic structures in dams (in French). Trans 15th Int Congr Large Dams, Lausanne, Q59 R46.
Cornell, C.A. & Vanmarcke, E.H. (1969). The major influences on seismic risk. In: Proceedings of the Fourth World Conference on earthquake engineering, Santiago, Chile.
Einstein, H.H. & Baecher, G.B. (1983). Probabilistic and statistical methods in engineering geology: Specific methods and examples part I: Exploration. Rock mechanics and rock engineering16, 39-72.
Environment Agency (2017a). Guide to drawdown capacity for reservoir safety and emergency planning. Vol. 1, Environment Agency, Horizon House, Deanery Road, Bristol, BS1 9AH.
Environment Agency (2017b). Guide to drawdown capacity for reservoir safety and emergency planning. Vol. 2, Environment Agency, Horizon House, Deanery Road, Bristol, BS1 9AH.
Eslamian, M.B.S. & Hajiannia, G.S.A. (2021). 2D and 3D Modeling of Transient Seepage from Earth Dams Thorough Finite Element Model (Case Study: Kordaliya Dam). Water Resources14(48), 86-97.
Faridmehr, I., YazdaniPour, M.R., Jokar, M.J. & Ozbakkaloglu, T. (2019). Construction and monitoring of cement/bentonite cutoff walls: case study of Karkheh Dam, Iran. Studia Geotechnica et Mechanica41(4), 184-199.
Fredlund, D.G. & Rahardjo, H. (1993). An overview of unsaturated soil behavior. Reprinted from UNSATURATED SOILS, Sponsored by the Geotechnical Engineering Division/ASCE, Held October 24-28, 1993, Dallas, Texas.
Fredlund, M.D. (2000). The role of unsaturated soil property functions in the practice of unsaturated soil mechanics, Doctoral dissertation, University of Saskatchewan.
Gao, X., Liu, H., Zhang, W., Wang, W. & Wang, Z. (2019). Influences of reservoir water level drawdown on slope stability and reliability analysis. Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards, 13(2), 145-153.
Gosden, J., Hart, D. & Dutton, T. (2014). Guide to drawdown capacity for reservoir safety and emergency planning. Dams Reserv, 24, 134–135.
Haghdoost, M., Sajjadi, S.M., Ahadiyan, J., Norouzi, R. & Abraham, J. (2024). The effect of sheet piles’ inclination angle, number, and distance on seepage through an earthfill dam. Ain Shams Engineering Journal, 15(12), 103056, https://doi.org/10.1016/ j.asej.2024.103056.
Haghdoost, M., Lakzian, E., Norouzi, R. Abraham, J., Sajjadi, S.M. & Ahadiyan. J. (2023). Numerical simulation using the finite element method to investigate the effect of internal cutoff walls on seepage and hydraulic gradients in homogeneous earth dams, Model Earth System Environment, 9, 3851–3864.
Khanna, R., Datta, M. & Ramana, G.V. (2014a). Influence of thickness of a vertical core on the slope stability of earth and rockfill dams. Dams and Reservoirs, 24(4), 152-167.
Khanna, R., Datta, M. & Ramana, G.V. (2014b). Influence of inclination of thin core on the stability of upstream slope of earth and rockfill dams. Electronic J Geotech Eng, Boundle (U), 6293-6306.
Khanna, R., Datta, M. & Ramana, G.V. (2019). Influence of core thickness on stability of downstream slope of earth and rockfill dams under end-of-construction and steady-state-seepage: a comparison. International Journal of Geotechnical Engineering13(1), 25-31.
Kiyani, A.M., Zeinivand, M., Ahadiyan, J. & Falorca, I. (2024). Experimental Investigation of Embankment Wedge Failure’s Stability under the Effect of the Number and Spacing of Geotextile Layers in the Reinforced Retaining Wall. JWSS, 28(2), 177-194.
Kulhawy, F.H. & Phoon, K.K. (2006). Some critical issues in Geo-RBD calibrations for foundations. In: GeoCongress 2006: Geotechnical engineering in the information technology age, 1-6, https://doi.org/ 10.1061/40803(187)197.
Lane, P.A. & Griffiths, D.V. (2000). Assessment of stability of slopes under drawdown conditions. J Geotech Geoenviron Eng, 126(5), 443, https:// doi.org/10.1061/(ASCE)1090-0241(2000)126:5 (443).
Ma, H. & Chi, F. (2016). Major technologies for safe construction of high earth-rockfill dams. Engineering2(4), 498-509.
Mansuri, B., Salmasi, F. & Oghati, B. (2014). Effect of location and angle of cutoff wall on uplift pressure in diversion dam. Geotechnical and Geological Engineering32, 1165-1173.
Memarian, S., Ahadiyan, J. & Karimi, H.R. (2023). Assessment of vertical pile reinforcement effect on behavior of foundations placed on Slopes: An experimental and numerical study, Ain Shams Engineering Journal, 14(12), 102233, https://doi.org/10.1016/j.asej.2023.102233.
Nayebzadeh, R. & Mohammadi, M. (2011). The effect of impervious clay core shape on the stability of embankment dams. Geotechnical and Geological Engineering29, 627-635.
Nouri, S. & Nohani, E. (2014). Numerical study of flow patterns in lateral intakes upstream and downstream (case study: Gotvand diversion Dam). Advances in Environmental Biology, 8(21), 1202-1208.
Pham, H.Q. (2001). An engineering model of hysteresis for soil-water characteristic curves, Doctoral dissertation, University of Saskatchewan.
Phoon, K.K. & Kulhawy, F.H. (2008). Serviceability limits state reliability-based design. In: Reliability-based Design in Geotechnical Engineering, 356-396, CRC Press.
Pinyol, N.M., Alonso, E.E. & Olivella, S. (2008). Rapid drawdown in slopes and embankments. Water Resour Res, 44(5), https://doi.org/10.1029/ 2007WR006525.
Prentice, J. (2005). Minimum discharge capacity of impounding reservoirs – Northumbria Water’s experience and results capital spend. Dams Reserv, 15(1), 17–8.
Salmasi, F. & Mansuri, B. (2014). Effect of homogeneous earth dam hydraulic conductivity ratio (Kx/Ky) with horizontal drain on seepage. Indian Geotechnical Journal44, 322-328.
Shole, D.G. & Belayneh, M.Z. (2019). The effect of side slope and clay core shape on the stability of embankment dam: Southern Ethiopia. International Journal of Environmental Science and Technology16, 5871-5880.
Sica, S., Pagano, L. & Rotili, F. (2019). Rapid drawdown on earth dam stability after a strong earthquake. Comput Geotech, 116, 103187, https://doi.org/10.1016/j.compgeo.2019.103187.
Song, K., Yan, E., Zhang, G., Lu, S. & Yi, Q. (2015). Effect of hydraulic properties of soil and fluctuation velocity of reservoir water on landslide stability. Environ Earth Sci, 74, 5319–5329.
Teimouri, A.B.B. & Khalkhali, A.B. (2018). Stability control of Narmab Dam and sensitivity analysis of reliability coefficients. Civil Engineering Journal4(9), 2197-2209.
USACE. (2016). Design criteria for dam and lake projects, Part 220. In: U.S. Corps of Engineers – Department of the Army, editor. Title 33 - Navig. Navig. waters. 33 CFR 220, Washington, DC: United States Corps of Engineers.
USBR (1990). Criteria and guidelines for evacuating storage reservoirs and sizing of low-level outlet works. ACER TECHN MEMORANDUM No. 3, Denver, Colorado.
Varde, P.V. & Pecht, M.G. (2018). Risk-Based Engineering: An Integrated Approach to Complex Systems--Special Reference to Nuclear Plants. Springer Singapore.
Water and Electricity Organization of Khuzestan Province. (2010). Water resource planning studies (Final Report), The first stage of the Seydon Reservoir Dam project.

  • تاریخ دریافت 04 مرداد 1403
  • تاریخ بازنگری 19 آبان 1403
  • تاریخ پذیرش 03 بهمن 1403