the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China
Abstract. To analyse the kinetic characteristics of a rapid landslide that occurred on 9 April 2000 in Tibet, China, a meshfree numerical method named Smoothed Particle Hydrodynamics (SPH) is introduced, and two-dimensional and three-dimensional models are established in this work. Based on the numerical simulation, the landslide motion process is reproduced and the kinetic characteristics are analysed combined with the field investigation data. In the kinetic analysis, the landslide velocity, run-out distance, landslide accumulation, and energy features are discussed. Simulation results show that the landslide mass undergoes an acceleration stage after failure, then the kinetic energy dissipates gradually due to the friction and collision during the landslide propagation. Finally, the landslide mass blocks the Yigong river and forms a huge landslide dam and an extensive barrier lake. The peak velocity is calculated to be about 100 m/s, and the run-out distance is approximately 8,500 m. The simulation results basically match the data measured in field, thus verifying the good performance of the presented SPH model. This approach can provide a new way to predict hazardous areas and estimate the hazard intensity of rapid landslides.
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Interactive discussion
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RC1: 'Review', Anonymous Referee #1, 16 Nov 2020
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RC2: 'Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China', Anonymous Referee #2, 24 Nov 2020
- AC2: 'Reply on RC2', Zili Dai, 31 Dec 2020
- AC1: 'Reply on RC1', Zili Dai, 31 Dec 2020
-
RC2: 'Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China', Anonymous Referee #2, 24 Nov 2020
Interactive discussion
-
RC1: 'Review', Anonymous Referee #1, 16 Nov 2020
-
RC2: 'Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China', Anonymous Referee #2, 24 Nov 2020
- AC2: 'Reply on RC2', Zili Dai, 31 Dec 2020
- AC1: 'Reply on RC1', Zili Dai, 31 Dec 2020
-
RC2: 'Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China', Anonymous Referee #2, 24 Nov 2020
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Cited
3 citations as recorded by crossref.
- Research review and prospects of the 2000 giant Yigong long-runout landslide: Volume, formation mechanism and recurrence period, Tibetan plateau, China C. Guo et al. 10.3389/feart.2022.1017611
- Numerical simulation of dynamic catastrophe of slope instability in three Gorges reservoir area based on FEM and SPH method Z. Su et al. 10.1007/s11069-021-05075-z
- Analyzing landslide-induced debris flow and flow-bridge interaction by using a hybrid model of depth-averaged model and discrete element method W. Shiu et al. 10.1007/s10346-022-01963-y