Calculation of erosion scour of cohesive soil
https://doi.org/10.21266/2079-4304.2021.235.187-195
Abstract
The analysis of existing methods for assessing soil erosion in hydraulic engineering and culverts, showing that the determination of the depth and rate of erosion is carried out without taking into account the physical properties of cohesive soils. Thus, these parameters are estimated using empirical relationships and with significant errors. Experimental data on erosion of cohesive soils prove that the large specific surface area and hydrophilicity of clay particles lead to decompaction and the removal of soil microaggregates into the flow. A mathematical model is proposed for calculating the depth of erosion of cohesive soils depending on the shear stress in the soil. Taking into account the adhesion indicators and the angle of internal friction in this model will avoid errors in the calculations.
About the Authors
A. Yu. Vinogradov
NPO «Gidrotekhproekt»
Russian Federation
Russian Federation
VINOGRADOV Alexey Yu. – DSc (Technical), Director
199155. PO Box 136. 14th line V.O. 97. St. Petersburg
WoS ResearcherID: D3751-2016
O. V. Zubova
St.Petersburg State Forest Technical University
Russian Federation
Russian Federation
ZUBOVA Oksana V. – PhD (Technical), Associate Professor
194021. Institute per. 5. St. Petersburg
WoS ResearcherID: AAE-4427-2020
ScopusAuthorID: 57217966252
E. A. Parfenov
NPO Gidrotekhproekt
Russian Federation
Russian Federation
PARFENOV Evgeny A. – Engineer
199155. PO Box 136. 14th line V.O. 97. St. Petersburg
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Review
For citations:
Vinogradov A.Yu., Zubova O.V., Parfenov E.A. Calculation of erosion scour of cohesive soil. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2021;(235):187-195. (In Russ.) https://doi.org/10.21266/2079-4304.2021.235.187-195
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