Assessment of the Influence of Mountain Flood Control Reservoir Operation on the Floodplain Stability During an Extreme Flood

• Autorzy: Velychko Svitlana , Dupliak Olena

Identyfikatory

DOI

10.12912/27197050/132096

• Języki publikacji: EN

Abstrakty

EN

Construction of Mountain Flood Control Reservoir is an effective method of flood protection on mountain rivers. The Flood Control Reservoir works under the extreme condition of rapid water level rising and falling. The regime of intensive water level change affects the floodplain stability. Simulation of water penetration into the depth of soil, formation of the seepage curve under transient conditions during water rising and falling was carried out by Midas GTS NX software. A slope stability analysis was conducted for the floodplain of the Irshava River, flood of 1% probability (return period of 100 years) was assumed. Numerous simulations showed that the influence of the mechanical and hydraulic properties of the soil depends on the slope angle. The stability of the floodplain slope depends on the cohesion and hydraulic conductivity for steep slopes greater than 26°; if the slope is less than 26°, the stability is considerably dependent on cohesion, and the hydraulic conductivity practically has no influence. Thus, floodplain with the angle greater than 26°, additional geological surveys are required to determine the soil composition, mechanical and hydraulic properties for each layer. For the slopes lesser than 26° it is sufficient to determine the mechanical and hydraulic properties for the engineering and geological elements of soil, according to the national building regulations. Numerical simulation allows reducing the total volume of geological survey by minimizing survey of the slopes with an angle of less than 26°, which is 30% of the floodplain perimeter. The slope stability analysis showed that the slopes with the angle greater than 26° require stabilization structures in the lower part of floodplain before the Mountain Flood Control Reservoir construction.

Słowa kluczowe

EN

mountain flood control reservoir; seepage curve; unsaturated seepage; transient seepage analysis; slope stability

• Wydawca: Lubelski Oddział Polskiego Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology ; WNGB Wydawnictwo Naukowe
• Czasopismo: Ecological Engineering & Environmental Technology
• Rocznik: 2021
• Tom: Vol. 22, iss. 1
• Strony: 31--38
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Velychko Svitlana

• Department of Water Supply and Sewage, Faculty of Engineering System and Ecology, Kyiv National University of Construction and Architecture, 31 Povitroflotsky Avenue, Kyiv, Ukraine

• https://orcid.org/0000-0001-8848-289X

autor

Dupliak Olena

• Department of Water Supply and Sewage, Faculty of Engineering System and Ecology, Kyiv National University of Construction and Architecture, 31 Povitroflotsky Avenue, Kyiv, Ukraine

• https://orcid.org/0000-0002-3500-5106

Bibliografia

• 1. Acharya K., Bhandary N., Dahal R., Yatabe R. 2016. Seepage and slope stability modelling of rainfallinduced slope failures in topographic hollows, Geomatics, Natural Hazards and Risk, 7 (2), 721-746.
• 2. Alfatlawi T., Al-temimi Y., Alomari Z. 2020. Evaluation of the upstream slope stability of earth dams based on drawdown conditions - Khassa Chai Dam: a case study. IOP Conference Series: Materials Science and Engineering. 671, 012072, 15p.
• 3. Carsel R., Parrish R. 1988. Developing Joint Probability Distributions of Soil Water Retention Characteristics. Water resources research, 24 (5), 755-769.
• 4. Duong T., Do D.M., Yasuhara K. 2019. Assessing the Effects of Rainfall Intensity and Hydraulic Conductivity on Riverbank Stability, Water, 11, 741.
• 5. Elkady T., Al-Mahbashi A., Dafalla M., Al-ShamraniM. 2017Effect of compaction state on the soil water characteristic curves of sand–natural expansive clay mixtures, European Journal of Environmental and Civil Engineering, 21(3), 289-302.
• 6. Fredlund D.G, Xing A. 1994. Equations for the soilwater characteristics curve. Canadian Geotechnical Journal, 31(4), 521-532.
• 7. Hu X., He C., Zhou C., Xu C., Zhang H., Wang Q., Wu S. 2019. Model Test and Numerical Analysis on the Deformation and Stability of a Landslide Subjected to Reservoir Filling. Geofluids Volume 2019, Article ID 5924580, 15 p.
• 8. Huang F., Luo X., Liu W. 2017 Stability Analysis of Hydrodynamic Pressure Landslides with Different Permeability Coefficients Affected by Reservoir Water Level Fluctuations and Rainstorms. Water, 9, 450, 16p.
• 9. Kim Y., Jeong S., Kim J. 2016 Coupled infiltration model of unsaturated porous media for steady rainfall. Soils and Foundations, 56 (6), 1071-1081.
• 10. Li X., Zhao C., Hölter R., Datcheva M., Lavasan A. 2019. Modelling of a Large Landslide Problem under Water Level Fluctuation—Model Calibration and Verification. Geosciences, 9, 89, 23p
• 11. Liu Q.Q., Li J.C. 2015 Effects of water seepage on the stability of soil-slopes. Procedia IUTAM 17, 29-39.
• 12. Mao J-Z., Guo J., Fu Y., Zhang W-P., Ding Y-N. 2019 Effects of Rapid Water-Level Fluctuations on the Stability of an Unsaturated Reservoir Bank Slope. Advances in Civil Engineering Volume 2020, Article ID 2360947, 10 p.
• 13. Nam S., Gutierrez M., Diplas P., Petrie J. 2014 Sensitivity of Transient Seepage Analysis to Variation of the Input Parameters Geo-Congress Technical Papers: Geo-Characterization and Modeling for Sustainability. Geo-Congress 2014 Technical Papers, GSP 234 © ASCE, 4097-4104.
• 14. Obodovskyi O., Onyschuk V., Grodzinskyi M. and Melnyk A. 2019. Changes in the “Channel-Flow” Hydrodynamic System of the Mountain Rivers in Tisza River Basin (within Ukraine) in Terms of High-Water Conditions. AIP Conference Proceedings 2186, 120015-1–120015-5.
• 15. Peranić J., Arbanas Ž., Cuomo S., Maček M. 2018. Soil-Water Characteristic Curve of Residual Soil from a Flysch Rock Mass. Geofluids Volume, Article ID 6297819, 15 p.
• 16. Seyed-Kolbadi S. M., Sadoghi-Yazdi J., Hariri-Ardebili M. A. 2019 An Improved Strength ReductionBased Slope Stability Analysis. Geosciences, 9, 55.
• 17. Tofani V., Dapporto S., Vannocci P., Casagli N. 2006. Infiltration, seepage and slope instability mechanisms during the 20–21 November 2000 rainstorm in Tuscany, central Italy. Natural Hazards Earth System Sciences, 6, 1025–1033.
• 18. Van Genuchten, M.T.V. 1980. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Science Society of America Journal, 44, 892–898.
• 19. Velychko S., Dupliak O. 2014. Study of the influents of Mountain Flood Control Reservoir on the transformation of 1% flood flow in the Tisza rivers basin. Problems of water supply, sewerage and hydraulic, 20, 45-52.
• 20. Xue, K., Ajmera, B., Tiwari, B., Hu Y. 2016. Effect of long duration rainstorm on stability of Red-clay slopes. Geoenviron Disasters, 3 (12), 1-13.
• 21. Yeh H-F, Tsai Y-J. 2018. Analysing the Effect of Soil Hydraulic Conductivity Anisotropy on Slope Stability Using a Coupled Hydromechanical Framework. Water, 10 (7), 905, 13 p.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).