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Article

Study on Hydraulic Incipient Motion Model of Reinforced Tailings

1
School of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
2
Sichuan Provincial Bureau of Geological and Mineral Exploration Geological Team 202, Chengdu 610000, China
3
School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China
4
School of Foreign Languages and Literature, Fudan University, Shanghai 200433, China
5
State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
*
Authors to whom correspondence should be addressed.
Academic Editor: António Pinheiro
Water 2021, 13(15), 2033; https://doi.org/10.3390/w13152033
Received: 27 April 2021 / Revised: 21 July 2021 / Accepted: 22 July 2021 / Published: 26 July 2021
Once the flood overtopping accident of a reinforced tailings dam occurs, it will cause great property losses and serious environmental pollution to the downstream residents. In order to further study the microscopic characteristics of the hydraulic erosion of reinforced tailings dams, considering that the beginning of reinforced tailings particles is the basis of flooding and erosion of reinforced tailings dams, in this paper, a reinforced tailings hydraulic erosion facility was used to carry out the tailings particle start-up test with reinforcement spacing of 5.0, 2.5, 1.7, 1.3, and 1.0 cm, and the influence the law of critical incipient velocity of tailings particles with different reinforcement spacing was revealed. The test results show that, the smaller the reinforcement spacing, the larger the incipient velocity of the reinforced tailings sample. Based on the sediment incipient motion theory, it is assumed that the resistance direction of particle incipient motion is opposite to the particle motion direction. A reinforcement coefficient is introduced to establish the incipient velocity formula of reinforced tailings particles. This model can provide theoretical support for the study of the hydraulic erosion rate of a reinforced tailings dam. View Full-Text
Keywords: reinforced tailings; reinforcement spacing; incipient velocity; reinforcement coefficient reinforced tailings; reinforcement spacing; incipient velocity; reinforcement coefficient
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MDPI and ACS Style

Liu, K.; Cai, H.; Jing, X.; Chen, Y.; Li, L.; Wu, S.; Wang, W. Study on Hydraulic Incipient Motion Model of Reinforced Tailings. Water 2021, 13, 2033. https://doi.org/10.3390/w13152033

AMA Style

Liu K, Cai H, Jing X, Chen Y, Li L, Wu S, Wang W. Study on Hydraulic Incipient Motion Model of Reinforced Tailings. Water. 2021; 13(15):2033. https://doi.org/10.3390/w13152033

Chicago/Turabian Style

Liu, Kehui, Hai Cai, Xiaofei Jing, Yulong Chen, Lu Li, Shangwei Wu, and Wensong Wang. 2021. "Study on Hydraulic Incipient Motion Model of Reinforced Tailings" Water 13, no. 15: 2033. https://doi.org/10.3390/w13152033

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