Half a Century of Vertical Riverbed Deformations due to In-Stream Mining

Berkovich, K.M.; Zlotina, L.V.; Turykin, L.A.

Авторы: Berkovich K.M., Zlotina L.V., Turykin L.A.
Журнал: Doklady Earth Sciences
Том: 513
Номер: 1
Год издания: 2023
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: S47
Последняя страница: S52
DOI: 10.1134/S1028334X23602419
Аннотация: The rate of deformation of the longitudinal profile for a period of half a century in the sedimentflow and riverbed morphology has been assessed by comparison of the leveling survey data on the longitudinalprofile of a number of lowland rivers in Russia. This problem remains relevant in both the theoretical andpractical aspects, especially for rivers in which a range of in-stream mines occupies kilometers and tens ofkilometers and they have operated for decades. The removal of a large amount of alluvial material from thesediment transport and changes in the riverbed morphometric characteristics have given impetus to the leveling process of the sediment transport capacity along the river due to scouring. The result is lowering of thebottom and water surface. The scouring reaches 3–8 cm in rate and spreads 400–700 m/yr along the river.Retrogressive erosion (headcutting) is well-defined, whereas progressive erosion is less pronounced, becauseit is partially replaced by the mechanical removal of alluvial material. Under these deformations, the longitudinal profile has changed from convex or straight to concave, and there are no signs of recovery over the pastdecades.
Добавил в систему: Беркович Константин Михайлович

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Half a Century of Vertical Riverbed Deformations due to In-Stream Miningстатья

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