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ZHANG Yanling, CHENG Liang, YAN Jinkai, GAO Yang. 2021. Study on the Catastrophic Process of Rapid and Long Run-out Landslides Based on DAN-W. Northwestern Geology, 54(1): 204-211. doi: 10.19751/j.cnki.61-1149/p.2021.01.018
Citation: ZHANG Yanling, CHENG Liang, YAN Jinkai, GAO Yang. 2021. Study on the Catastrophic Process of Rapid and Long Run-out Landslides Based on DAN-W. Northwestern Geology, 54(1): 204-211. doi: 10.19751/j.cnki.61-1149/p.2021.01.018
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Study on the Catastrophic Process of Rapid and Long Run-out Landslides Based on DAN-W

  • 1. China Institute of Geo-Environment Monitoring, Beijing 100081, China;

  • 2. Chinese Academy of Geological Sciences, Beijing 100037, China;

  • 3. Institute of Geo-mechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

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Received Date:  15 April 2020
Revised Date:  27 September 2020
    Abstract
  • Rapid and long run-out landslides, one of the most serious geological hazards in China, caused great damage due to its sudden, violent, high speed and long run-out characteristics. Therefore, it is of great significance to study the catastrophic process for prevention and mitigation of the hazard. DAN-W is a dissipative particle dynamics based on Lagrangian finite-difference and inverse simulation of the detrital flow process. This paper studies the characteristics of the Banana-Tree Landslide in Ailao mountain area. DAN-W was used to establish the calculation model and analyze the catastrophe process. The slide path was divided into three segments:sliding source segment, scraper segment and accumulation segment, according to landslide zoning and scraping effect. The results showed that the maximum speed of frontal part was 26m/s, the frontal rear part was 30m/s at the shear exit; the maximum slip distance was 420m, sliding off shear outlet after 14s, and stopped after 30s. The results are consistent with the actual situation.
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