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Volume 13
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10.3390/app13095250
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Article

Analysis of the Dynamic Stability of Tailing Dams: An Experimental Study on the Dynamic Characteristics of Tailing Silt

by
Fuqi Kang
1,2,
Guangjin Wang
1,2,*,
Yaoji Li
3,
Binting Cai
3,
Shujian Li
3,
Lei Zhao
3 and
Xiaoshuang Li
4
1
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
2
Yunnan International Technology Transfer Center for Mineral Resources Development and Solid Waste Resource Utilization, Kunming 650093, China
3
Yunnan Phosphate Chemical Group Co., Ltd., Kunming 650600, China
4
School of Urban Construction, Changzhou University, Changzhou 213164, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2023, 13(9), 5250; https://doi.org/10.3390/app13095250
Submission received: 14 March 2023 / Revised: 11 April 2023 / Accepted: 20 April 2023 / Published: 22 April 2023
(This article belongs to the Special Issue Research on Rock Mechanics and Backfilling Materials for Underground Mining)
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Abstract

With the improvement in tailing mining-grade requirements and in mineral processing technology, tailing materials tend to be fine-grained. Under the action of earthquakes, a tailing dam is prone to liquefaction, which endangers the safety and stability of the dam. To further explore the dynamic properties of tailing silt under cyclic stress, through a series of dynamic triaxial experiments, we investigated the growth of the hysteresis curve, the development of pore pressure, and the energy dissipation law of tailing silt. The experimental findings indicated that increasing the density of the sample significantly improves its liquefaction resistance and the pore pressure development curve can be fitted using the BiDoseResp function. At the same cyclic stress ratio, the sample’s anti-liquefaction strength did not rise monotonically with increasing confining pressure but changed variably at values near a specified low confining pressure; when the sample density rose under the same settings, the specific confining pressure reduced. We also further discussed the evolution law of the stress–strain curves of tailing silt. The results further explored the dynamic characteristics of tailing silt, which can provide some reference for the seismic design and reinforcement measures of many fine-grained tailing dams.
Keywords: tailing silt; dynamic stability; dynamic triaxial test; dynamic pore water pressure; energy dissipation tailing silt; dynamic stability; dynamic triaxial test; dynamic pore water pressure; energy dissipation

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MDPI and ACS Style

Kang, F.; Wang, G.; Li, Y.; Cai, B.; Li, S.; Zhao, L.; Li, X. Analysis of the Dynamic Stability of Tailing Dams: An Experimental Study on the Dynamic Characteristics of Tailing Silt. Appl. Sci. 2023, 13, 5250. https://doi.org/10.3390/app13095250

AMA Style

Kang F, Wang G, Li Y, Cai B, Li S, Zhao L, Li X. Analysis of the Dynamic Stability of Tailing Dams: An Experimental Study on the Dynamic Characteristics of Tailing Silt. Applied Sciences. 2023; 13(9):5250. https://doi.org/10.3390/app13095250

Chicago/Turabian Style

Kang, Fuqi, Guangjin Wang, Yaoji Li, Binting Cai, Shujian Li, Lei Zhao, and Xiaoshuang Li. 2023. "Analysis of the Dynamic Stability of Tailing Dams: An Experimental Study on the Dynamic Characteristics of Tailing Silt" Applied Sciences 13, no. 9: 5250. https://doi.org/10.3390/app13095250

APA Style

Kang, F., Wang, G., Li, Y., Cai, B., Li, S., Zhao, L., & Li, X. (2023). Analysis of the Dynamic Stability of Tailing Dams: An Experimental Study on the Dynamic Characteristics of Tailing Silt. Applied Sciences, 13(9), 5250. https://doi.org/10.3390/app13095250

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