Abstract
To reveal the dynamic evolution process of slope destabilization of soft substrate waste dump slope under vibration, the block stacking loose slope simulation test system was used to carry out the relevant research, and the stage characteristics of the soft substrate waste dump destabilization under vibration were quantitatively analyzed; the Rosin–Rammler distribution function, which describes the distribution characteristics of the loose medium in the waste dump, was modified based on the concept of the relative height. The results show that the particle size distribution of the loose media in the waste dump has obvious correlation with the relative height, and the modified Rosin–Rammler distribution can better describe the relationship between the two; when the vibration frequency is ≤ 20 Hz, the small particles on the slope surface of the waste dump experience slight slip, while medium and large particle sizes are basically in the stable state, accompanied by the phenomenon of vibration compaction. When the vibration frequency > 20 Hz, there is a small range of slippage on the slope surface of the waste dump slope, with the increase of vibration frequency, the slippage range of the slope surface of the waste dump slope is gradually enlarged, accompanied by particles sliding and flowing, ultimately forming a large range of slippage and bench surface damage, and causing the dynamic instability of the waste dump. The research results can provide fundamental support for the study of dynamic instability of waste dump slopes.
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Acknowledgements
The authors gratefully acknowledge the financial support of the National Science Fund (NO. 51474220); the Basic Research Funds of China University of Mining and Technology (Bei**g) – Doctoral Outstanding Innovation Talent Cultivation Fund (NO. BBJ2023004); the Open Project of Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education (NO.NECP202405).
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Liu Shaoqiang, as the first author of the manuscript, was responsible for the theoretical research and writing of the manuscript; Zhao Hongbao, as the corresponding author of the manuscript, is responsible for guiding the writing and research ideas of the manuscript.
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Shaoqiang, L., Hongbao, Z. Research on the distribution law and dynamic response characteristics of loose media in soft foundation waste dump slope. Environ Earth Sci 83, 401 (2024). https://doi.org/10.1007/s12665-024-11688-x
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DOI: https://doi.org/10.1007/s12665-024-11688-x