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Transporting capacity of small depth flows as the prerequisite of eroded soil formationтезисы доклада
- Автор: Demidov V.
- Сборник: Abstract book 9th International Soil Science Congress on “The Soul of Soil and Civilization” (14-16 October 2014)
- Тезисы
- Год издания: 2014
- Место издания: Side, Antalea/Turkey Turkey
- Первая страница: 241
- Последняя страница: 241
- Аннотация: The objective of this work – by the example of soddy-podzolic soil of different degree of wash off quantitatively assess the ability of small depth flows at the system level “flow-soil” to transfer certain mass of soil material. The results of model experiments used for verification of theoretical equation of sediment transport. Determination of quantities transfer and deposition of soddy-podzolic soil of different degree of wash off spend on a large erosive tray. The tray had artificial channel (length 5 m, width 0.1 m, bump height of roughness of the bottom – 0.35 mm), which was set different velocity of the water flow and streams of water artificially loaded soil in dry or pre-humid condition. The range of velocities varied from 0.20 to 0.62 m/s. The flow depth – 8-13 mm. In the experiments yielded the following indicators: the average velocity (m/s) and water turbidity, the radius (m) of the transported and deposited in the stream bed of aggregates and other. These indicators are used for verification of the theoretical equation transporting capacity (kg/m3). The obtained experimental data will allow to making the conclusion on the applicability of the model's transporting capacity flow in relation to the soil material. Comparison of the experimentally obtained values of portable soil material and calculated the dependence showed that the average error modulo amounted to 18.4%, and the correlation coefficient – 0.86.
- Добавил в систему: Демидов Валерий Витальевич