•  
  •  
 

Bulletin of Chinese Academy of Sciences (Chinese Version)

Keywords

mountain hazards, experimental platform, physical modelling, large scale, dynamic process

Document Type

Key Research Infrastructures in CAS Field Stations

Abstract

Mountain hazards involve complex multiphase media composed of granular materials and fluids. The challenges related to scale effects and similarity issues in physical modelling of these hazards are key problems in both fundamental research on dynamics of granular materials and applied research in disaster prevention and mitigation. Supported by the Chinese Academy of Sciences’ key scientific infrastructure construction project at the field station network, the National Dongchuan Debris Flow Observation and Research Station in Jiangjia Gully, Dongchuan District, Kunming City completed the construction of the large-scale experimental platform on dynamic simulation of mountain hazards (LEADS) in 2024. This platform is the world’s largest, most automated, and best synchronized system for data collection among international advanced experimental platforms for physical modelling of mountain hazards. The LEADS platform fully adheres to the similarity criteria for simulating multiphase media in mountain hazards, accurately reveals the dynamic evolution mechanisms of these media as well as the regulation mechanisms of mitigation structures, and effectively aids in the engineering design. LEADS serves as a national treasure in China’s disaster reduction field and is set to become a demonstration base for basic and fundamental research on mountain hazards dynamics and for the development, testing, and promotion of new disaster prevention and control structures. It will significantly promote the research level of mountain hazards in China and will lead the development of the relevant scientific fields.

First page

1458

Last Page

1467

Language

Chinese

Publisher

Bulletin of Chinese Academy of Sciences

References

1 康志成, 李焯芬, 马蔼乃, 等. 中国泥石流研究. 北京: 科学出版社, 2004. Kang Z C, Li Z F, Ma A N, et al. Debris Flows in China. Beijing: Science Press, 2004. (in Chinese)

2 崔鹏. 中国山地灾害研究进展与未来应关注的科学问题. 地理科学进展, 2014, 33(2): 145-152. Cui P. Progress and prospects in research on mountain hazards in China. Progress in Geography, 2014, 33(2): 145-152. (in Chinese)

3 Savage S B, Hutter K. The dynamics of avalanches of granular materials from initiation to runout. Part I: Analysis. Acta Mechanica, 1991, 86(1): 201-223.

4 Coussot P. Mudflow Rheology and Dynamics. London: Routledge, 2017.

5 Armanini A, Capart H, Fraccarollo L, et al. Rheological stratification in experimental free-surface flows of granular– liquid mixtures. Journal of Fluid Mechanics, 2005, 532: 269-319.

6 Okura Y, Kitahara H, Sammori T, et al. The effects of rockfall volume on runout distance. Engineering Geology, 2000, 58(2): 109-124.

7 Moriwaki H, Inokuchi T, Hattanji T, et al. Failure processes in a full-scale landslide experiment using a rainfall simulator. Landslides, 2004, 1: 277-288.

8 Ochiai H, Sammori T, Okada Y. Landslide experiments on artificial and natural slopes. Progress in Landslide Science, 2007: 209-226.

9 Takahashi T. Debris Flow: Mechanics, Prediction and Countermeasures. London: Taylor & Francis, 2007.

10 Bowman E T, Take W A, Rait K L, et al. Physical models of rock avalanche spreading behaviour with dynamic fragmentation. Canadian Geotechnical Journal, 2012, 49(4): 460-476.

11 Iverson R M. Scaling and design of landslide and debris-flow experiments. Geomorphology, 2015, 244: 9-20.

12 Iverson R M, Costa J E, LaHusen R G. Debris-flow flume at HJ Andrews experimental forest, Oregon. US Geological Survey, Dept. of the Interior, 1992.

13 Iverson R M. The physics of debris flows. Reviews of geophysics, 1997, 35(3): 245-296.

14 Paik J, Son S, Kim T, et al. A real-scale field experiment of debris flow for investigating its deposition and entrainment// AGU Fall Meeting Abstracts. 2012: EP53A-1010.

Download
Request a Copy

Share

COinS