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Journal of Mountain Science

, Volume 16, Issue 2, pp 402–413 | Cite as

Erosion and transport mechanisms of mine waste along gullies

  • Xing-hua Zhu
  • Yi-fei Cui
  • Jian-bing PengEmail author
  • Cheng Jiang
  • Wei-long Guo
Article

Abstract

Mine waste debris flows continue to occur in China, and the disaster prevention and mitigation of these flows faces severe challenges since the mechanisms determining erosion and transport of mine waste along gullies are not yet fully understood. The erosion and delivery process of mine waste heaps was reproduced through flume experiments with the method based on field survey data of the Daxicha mine waste debris flow gully in the Xiaoqinling gold mining area. The results showed that the erosion and movement of mine wastes could be divided into three modes: minimal sediment movement, sediment sorting and delivery, and a large amount of sediment transfer. Moreover, there was an obvious amplification effect on peak discharge along with the formation and failure of temporary landslide dams during the erosion process. The correlation between the coefficient of peak discharge amplification and three dimensionless influencing factors, flume gradient, dimensionless volume, and dimensionless particle size, were comprehensively analyzed. An empirical formula for the coefficient of peak discharge amplification was proposed and verified based on 16 sets of experimental data. These preliminary results can provide a scientific reference for future research on disaster prevention and mitigation of mine waste debris flows.

Keywords

Mine waste Debris flow Erosion and transport Landslide dam Peak discharge amplification 

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Notes

Acknowledgements

The authors acknowledge the financial support from the National Natural Science Foundation of China (Grant Nos. 41790441, 41877249 and 41402255) and Shaanxi Natural Science Foundation Project (Grant No. 2017JM4008). Finally, the authors thank Dr. MA Penghui for his kind assistance with the flume experiments.

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Geological Engineering and SurveyingChang’an UniversityXi’anChina
  2. 2.Key Laboratory of Western China ineral Resources and Geological EngineeringChang’an UniversityXi’anChina
  3. 3.Department of Civil and Environmental Engineering, Hong Kong University of Science and TechnologyClear Water BayHong KongChina
  4. 4.Shaanxi Institute of Engineering Prospecting Co. LtdXi’anChina

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