Purpose: to study the distribution of pore pressure under an underground dam located in a mountain valley for the atmospheric precipitation accumulation, while analyzing the effect of water levels in headwater and tailwater. At the same time, the factors of influence varied in the range: the water level in headwater from minus 8.2 to minus 1.2; water level in tailwater from minus 7.9 to minus 6.7.
Materials and methods. The study of a complex system was carried out in two stages. At the first stage, the pore pressure under the underground dam, responsible for the seepage under it, was calculated using the finite element method based on the Midas GTX NX software package, which has the ability to take into account the complex joint operation of the underground dam and the soil mass. At the second stage, the resulting array of numbers, which reflects the physical processes occuring when the response function, which is taken as the pore pressure under the underground dam, is affected by disturbances, for which the water levels in headwater and tailwater of the dam are taken, was subjected to digital analysis.
Results. The range of pore pressure values at the maximum headwater levels is 31.72 % over the entire range of tailwater levels. For the average levels of the headwater, the range of pore pressure values is 32.70 %, and for the minimum levels of the headwater, the range of pore pressure values is 39.41 %, also in the entire range of changes at the tailwater levels. Thus, the lower the headwater level, the greater the impact on the pore pressure of the tailwater level.
Conclusions: with a change in the studied range of water levels in headwater or tailwater of the dam, i.e. factors of influence, with a decrease in the values of the impact factors, the degree of their influence on the pore pressure under the underground dam decreases, and with growth – increases, and it occurs almost linear.
doi: 10.31774/2712-9357-2023-13-4-396-412
pore pressure, underground dam, race levels, numerical experiment, digital analysis
Degtyarev V. G., Degtyareva O. G., Degtyarev G. V. Study of pore pressure distribution under an underground dam in a mountain valley during the atmospheric precipitation accumulation. Land Reclamation and Hydraulic Engineering. 2023;13(4):396–412. (In Russ.). https://doi.org/10.31774/2712-9357-2023-13-4-396-412.
1. Vasilieva N.K., Reznichenko S.M., Vasiliev V.P., Agafonova N.P., 2016. [Factors and conditions for ensuring the economic sustainability of farm organizations in the region]. Nauchnyy zhurnal KubGAU: politematicheskiy setevoy elektronnyy zhurnal, no. 121(07), pp. 1633-1646, available: http:ej.kubagro.ru/2016/07/pdf/100.pdf [accessed 11.07.2023]. (In Russian).
2. Degtyareva O.G., Vasiliev S.M., 2021. [The use of deep-laid pits when using precipitation runoff for irrigation in the mountainous piedmont zone]. Melioratsiya i gidrotekhnika, vol. 11, no. 3, pp. 78-94, available: http:www.rosniipm-sm.ru/article?n=1215 [accessed 11.07.2023], DOI: 10.31774/2712-9357-2021-11-3-78-94. (In Russian).
3. Vasiliev S.M., 2020. Vodosberegayushchie tekhnologii orosheniya i ratsional'noe ispol'zovanie vodnykh resursov v APK Rossii [Water-saving irrigation technologies and rational use of water resources in the agro-industrial complex of Russia]. Sovremennye problemy razvitiya melioratsii i puti ikh resheniya (Kostyakovskie chteniya): materialy mezhdunarodnoy nauchno-prakticheskoy konferentsii [Current Problems of Land Reclamation Development and Ways to Solve Them (Kostyakov Readings): Proc. of the International Scientific Practical Conference]. Moscow, vol. 2, pp. 6-11, DOI: 10.37738/VNIIGiM.46.89.002. (In Russian).
4. Usenko V.S., Altshul A.Kh., 1984. Sokhranenie podzemnykh vod ot istoshcheniya metodom iskusstvennogo vospolneniya [The Use and Preservation of Groundwater from Depletion by Artificial Replenishment]. Minsk, TsNIIKIVR, 124 p. (In Russian).
5. Koronkevich N.I., Barabanova E.A., Zaitseva I.S., 2010. Ekstremal'nye gidrologicheskie situatsii [Extreme Hydrological Situations]. Moscow, Media Press, 464 p. (In Russian).
6. Degtyareva O.G., Vasiliev S.M., 2021. [Computer modeling and stress-strain analyses of the seasonal storage dam foundation]. Melioratsiya i gidrotekhnika, vol. 11, no. 2, pp. 92-110, available: http:www.rosniipm-sm.ru/article?n=1198 [accessed 11.07.2023], DOI: 10.31774/2222-1816-2021-11-2-92-110. (In Russian).
7. Degtyarev G.V., Abdrazakov F.K., Lavrov N.P., 2020. Assessment of the hydraulic structures’ technical condition by means of the amplitude-frequency characteristics’ analysis. IOP Conference Series: Materials Science and Engineering, vol. 913, no. 2, 022056, DOI: 10.1088/1757-899X/913/2/022056.
8. Bandurin M.A., Vanzha V.V., Shishkin A.S., Litovko F.S., Sidakov A.A., 2020. Modeling methods to assess technical condition of low-pressure earthen dams. IOP Conference Series: Earth and Environmental Science, vol. 488, no. 1, 012006, DOI: 10.1088/1755-1315/488/1/012006.
9. Abdrazakov F.K., Degtyarev V.G., Degtyarev G.V., 2022. Tsifrovoe modelirovanie i analiz peremeshcheniya osnovaniya gidromeliorativnoy plotiny v perspektivnoy tekhnologii formirovaniya resursov vody [Digital modeling and analysis of the displacement of the foundation of a hydro-reclamation dam in a promising technology for the formation of water resources]. Agrarnyy nauchnyy zhurnal [Agrarian Scientific Journal], no. 6, pp. 82-87, https:doi.org/10.28983/asj.y2022i6pp82-87. (In Russian).
10. Lamerdonov Z., Khashirova T., Zhaboev S., Nastueva L., Shogenov A., Lamerdonov K., 2021. Resource-saving technologies and some proposals for the creation of automated reclamation systems. Ecology and Industry of Russia, vol. 25, no. 7, pp. 8-12, https:doi.org/10.18412/1816-0395-2021-7-8-12.
11. Degtyarev G.V., Svistunov Yu.A., 2005. Nizkonapornye gidrotsiklony-osvetliteli vod poverkhnostnogo stoka [Low-Pressure Hydrocyclones-Clarifiers of Surface Runoff Waters]. Krasnodar, KSAU Publ., 176 p. (In Russian).
12. Solodunov A.A., Bandurin M.A., 2021. Finite element modelling of the technical condition of a low-pressure earthen dam of rice systems under increasing operational loads. IOP Conference Series: Earth and Environmental Science, vol. 720, no. 1, 012081, DOI: 10.1088/1755-1315/720/1/012081.
13. Volosukhin Ya.V., Bandurin M.A., 2012. Primenenie chislennykh metodov modelirovaniya dlya opredeleniya ostatochnogo resursa dlitel'no ekspluatiruemykh vodoprovodyashchikh sooruzheniy [The use of computer modeling methods to determine the residual resource of long-term operated water supply structures]. Obrazovanieto i naukata na ХХI vek – 2012: materiali za VIII Mezhdunarodnoy nauchno prakticheskoy konf. [Education and Science for the 21 Century – Proc. of the International Scientific Practical Conference]. Sofia, Byal GRAD-BG, vol. 41, pp. 24-32. (In Russian).
14. Abdrazakov F.K., Pankova T.A., Shcherbakov V.A., 2016. Faktory, vliyayushchie na ekspluatatsionnoe sostoyanie gidrotekhnicheskikh sooruzheniy [Factors affecting the operational condition of hydraulic structures]. Agrarnyy nauchnyy zhurnal [Agrarian Scientific Journal], no. 10, pp. 56-61. (In Russian).
15. Abdrazakov F.K., Degtyarev V.G., Kozhenko N.V., 2021. Analiz osnovaniya meliorativnoy plotiny pri rabote v naporno-peremennom rezhime [Analysis of the base of a reclamation dam when operating in a pressure-variable mode]. Agrarnyy nauchnyy zhurnal [Agrarian Scientific Journal], no. 8, pp. 82-86, https:doi.org/10.28983/asj.y2021i8pp82-86. (In Russian).
16. Kamensky G.N., 1963. Gidrodinamicheskie printsipy izucheniya rezhima gruntovykh vod [Hydrodynamic principles for studying the groundwater regime]. Voprosy gidrogeologii i inzhenernoy geologii [Problems of Hydrogeology and Engineering Geology], no. 10, p. 28. (In Russian).
17. Altshul A.Kh., Usenko V.S., Chaban M.O., 1977. Regulirovanie zapasov podzemnykh vod [Regulation of Underground Water Reserves]. Moscow, Kolos Publ., 239 p. (In Russian).
18. Bandurin M.A., Volosukhin V.A., Prikhodko I.A., Verbitsky A.Yu., 2023. Eksperimental'noe issledovanie mekhanicheskikh svoystv nizovogo klina nizkonapornoy damby v usloviyakh povysheniya urovnya pavodkovykh vod [Experimental study of the mechanical properties of the downstream wedge of a low-pressure dam under conditions of rising flood waters]. Construction and Geotechnics, vol. 14, no. 1, pp. 111-122. (In Russian).
19. Vishnevskaya I.A., Desinov L.V., Dolgov S.V., Koronkevich N.I., Shaporenko S.I., Kireeva M.B., Frolova N.L., Rets E.P., Golubchikov S.N., 2016. Geografo-gidrologicheskaya otsenka navodneniy v Rossiyskom Prichernomor'e [Geographic and hydrological assessment of floods in the Russian Black Sea region]. Izvestiya Rossiyskoy akademii nauk. Seriya geograficheskaya [Proceedings of the Russian Academy of Sciences. Geographic Series], no. 1, pp. 131-146, DOI: 10.15356/0373-2444-2016-1-131-146. (In Russian).
20. Bazelyuk A.A., 2012. Opasnye gidrometeorologicheskie yavleniya na yuge evropeyskoy territorii Rossii [Dangerous hydrometeorological phenomena in the south of the European territory of Russia]. Prirodnye i sotsial'nye riski v beregovoy zone Chernogo i Azovskogo morey [Natural and Social Risks in the Coastal Zone of the Black and the Azov Seas]. Moscow, Triumf Publ., pp. 33-41. (In Russian).
