A mountain disaster chain always brings about potential danger to the safety of people and the environment based on its characteristics of long time-scale, great destructive power, and broad scope. Mechanisms responsible for this hazard are represented by studying a landslide-caused disaster chain that occurred in the bank of Jinshajiang River, China on 10 October 2018. The evolution process of this disaster chain is simulated and analyzed using a coupled model that consists of several depth-averaged equations, and the results agree well with the measured data. Furthermore, several factors, including frictional coefficient, inflow flux, and critical dam slope coefficient, are tested by applying different values. Results indicate that the evolution of a mountain disaster chain can change at each stage with different initial conditions.
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Waveform data for this study are provided by the Data Management Centre of the China National Seismic Network at the Institute of Geophysics, China Earthquake Administration. DEM data for this study is provided by the Sichuan Geomatics Center.
We thank two anonymous reviewers for their constructive comments on this manuscript. This work was supported by the National Natural Science Foundation of China (Grant nos. 41907241, 41790433), Original Innovation Program, CAS (Grant no. ZDBS-LY-DQC039), the Foundation for Young Scientist of Institute of Mountain Hazards and Environment, CAS (Grant No. SDS-QN-1901), and CAS “Light of West China” Program.
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Liu, W., Ju, N., Zhang, Z. et al. Simulating the process of the Jinshajiang landslide-caused disaster chain in October 2018. Bull Eng Geol Environ 79, 2189–2199 (2020). https://doi.org/10.1007/s10064-019-01717-6
- Landslide-caused disaster chain
- Model simulation
- Process analysis