Preprints
https://doi.org/10.5194/nhess-2020-289
https://doi.org/10.5194/nhess-2020-289
27 Oct 2020
 | 27 Oct 2020
Status: this preprint has been withdrawn by the authors.

Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China

Zili Dai, Fawu Wang, Hufeng Yang, and Shiwei Qin

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.

This preprint has been withdrawn.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Zili Dai, Fawu Wang, Hufeng Yang, and Shiwei Qin

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Zili Dai, Fawu Wang, Hufeng Yang, and Shiwei Qin
Zili Dai, Fawu Wang, Hufeng Yang, and Shiwei Qin

Viewed

Total article views: 933 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
630 258 45 933 47 51
  • HTML: 630
  • PDF: 258
  • XML: 45
  • Total: 933
  • BibTeX: 47
  • EndNote: 51
Views and downloads (calculated since 27 Oct 2020)
Cumulative views and downloads (calculated since 27 Oct 2020)

Viewed (geographical distribution)

Total article views: 858 (including HTML, PDF, and XML) Thereof 853 with geography defined and 5 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 13 Oct 2024
Download

This preprint has been withdrawn.

Altmetrics