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Review

Review on Numerical Simulation of the Internal Soil Erosion Mechanisms Using the Discrete Element Method

by 1,2, 1,2,*, 1,2, 1,2 and 1,2
1
MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China
2
Center for Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China
*
Author to whom correspondence should be addressed.
Water 2021, 13(2), 169; https://doi.org/10.3390/w13020169
Received: 18 December 2020 / Revised: 7 January 2021 / Accepted: 8 January 2021 / Published: 13 January 2021
Internal erosion can trigger severe engineering disasters, such as the failure of embankment dams and uneven settlement of buildings and sinkholes. This paper comprehensively reviewed the mechanisms of soil internal erosion studied by numerical simulation, which can facilitate uncovering the internal erosion mechanism by tracing the movement of particles. The initiation and development of internal erosion are jointly influenced by the geometric, mechanical, and hydraulic conditions, which determine the pore channels and force chains in soil. The geometric conditions are fundamental to erosion resistance, whereas the mechanical conditions can significantly change the soil erosion resistance, and the hydraulic conditions determine whether erosion occurs. The erosion process can be divided into particle detachment, transport, and clogging. The first is primarily affected by force chains, whereas the latter two are mostly affected by the pore channels. The stability of the soil is mainly determined by force chains and pore channels, whereas the hydraulic conditions act as external disturbances. The erosion process is accompanied by contact failure, force chain bending, kinetic energy burst of particles, and other processes due to multi-factor coupling. View Full-Text
Keywords: internal erosion; numerical simulation; DEM; erosion mechanism internal erosion; numerical simulation; DEM; erosion mechanism
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MDPI and ACS Style

Wang, X.; Tang, Y.; Huang, B.; Hu, T.; Ling, D. Review on Numerical Simulation of the Internal Soil Erosion Mechanisms Using the Discrete Element Method. Water 2021, 13, 169. https://doi.org/10.3390/w13020169

AMA Style

Wang X, Tang Y, Huang B, Hu T, Ling D. Review on Numerical Simulation of the Internal Soil Erosion Mechanisms Using the Discrete Element Method. Water. 2021; 13(2):169. https://doi.org/10.3390/w13020169

Chicago/Turabian Style

Wang, Xiukai, Yao Tang, Bo Huang, Tiantian Hu, and Daosheng Ling. 2021. "Review on Numerical Simulation of the Internal Soil Erosion Mechanisms Using the Discrete Element Method" Water 13, no. 2: 169. https://doi.org/10.3390/w13020169

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