Thermal and filtration behaviour of the earth dam crest area in severeclimatic conditions ТЕМПЕРАТУРНО-ФИЛЬТРАЦИОННЫЙ РЕЖИМ ПРИГРЕБНЕВОЙ ЗОНЫ ГРУНТОВОЙ ПЛОТИНЫ В СУРОВЫХ КЛИМАТИЧЕСКИХ УСЛОВИЯХ

• Main Author: Aniskin Nikolay Alekseevich
• Format: Article in Journal/Newspaper
• Language: English; Russian
• Published: Moscow State University of Civil Engineering (MGSU) 2013
• Subjects: earth-fill dam; thermal and filtration behaviour; air temperature; finite element method; static mode; каменно-набросная плотина; температурно-фильтрационный режим; температура воздуха; метод конечных элементов; установившийся режим; уровень верхнего бьефа; Architecture; NA1-9428; Construction industry; HD9715-9717.5; Kolymskaya; permafrost
• Online Access: https://doaj.org/article/12904ca143e446e6ae952aa37c7216a0

The author analyzes the thermal and filtration behaviour of the earth dam’s crest area in the case of the water level rise in the permafrost conditions. Kolymskaya hydroelectric power station operates in severe climatic conditions with the average air temperature of –11.5 °C. The period of negative average temperatures lasts for 7 months (October through April). The coldest months are December and January (when the average temperature reaches –35.4 … –35.8 °C). The warmest month of the year is July (the average temperature reaches 15.8 °C).Analysis of the thermal and filtration behaviour was performed through the employment of the finite element method in its variational formulation. The Fourier-Kirchhoff differential equation was solved as part of the problem resolution.The results of the analysis comply with the earlier findings. However, the unique nature and importance of the hydro-electric facility confirm the need to perform further research into its thermal and filtration behaviour by developing a three-dimension forecastmodel to take account of several following factors, including the bypass filtration and the presence of reinforced concrete pipes in the dam. Рассмотрены и проанализированы результаты расчета температурно-фильтрационного режима пригребневой зоны каменно-земляной плотины в условиях вечной мерзлоты для случая возможного повышения уровня верхнего бьефа выше отметки НПУ. Обоснована возможность такого повышения, позволяющая увеличить выработку электроэнергии ГЭС.