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Mechanism of the high-speed and long-run-out landslide considering the evolution of the frictional heat in the sliding zone

Author

Listed:
  • Yanfeng Zhang

    (Chinese Academy of Geological Sciences
    Chongqing University)

  • Wengang Zhang

    (Chongqing University)

  • Luqi Wang

    (Chongqing University)

  • Ting Xiao

    (Central South University)

  • Xuanyu Meng

    (Chongqing University)

  • Zhihua Zhang

    (Chongqing 208 Geo-Environmental Research Institute Co. Ltd)

Abstract

A unified and systematic understanding of the dynamic mechanism of high-speed and long-run-out landslides has not been achieved due to the fast-movement speed and long sliding distance. It is difficult to explain the evolution process using conventional dynamic methods. In this study, the evolution of the frictional heat in the sliding zone and dynamic process of the Guang'an Village landslide were studied through field investigation and MatDEM numerical simulation software. A nucleated high-heat area was formed near the sliding zone, and it expanded in the forward motion direction during the sliding. The high-heat area corresponded to the trajectory projection of the thickest part of the sliding mass. It was difficult for the heat generated by the friction in the sliding zone to dissipate during the few seconds of the sliding process, and 80% of the heat was stored in the rock and soil near the sliding zone, causing the temperature of these materials to increase sharply. The connection state diagram and heat field diagram of the MatDEM unit intuitively showed the fracture development process in the sliding mass and sliding bed. The results of this study provide an important reference for the evolution mechanism of high-speed and long-run-out landslides.

Suggested Citation

  • Yanfeng Zhang & Wengang Zhang & Luqi Wang & Ting Xiao & Xuanyu Meng & Zhihua Zhang, 2024. "Mechanism of the high-speed and long-run-out landslide considering the evolution of the frictional heat in the sliding zone," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 120(4), pages 3299-3317, March.
    • Handle: RePEc:spr:nathaz:v:120:y:2024:i:4:d:10.1007_s11069-023-06334-x
    DOI: 10.1007/s11069-023-06334-x
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    References listed on IDEAS

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    1. Zhuo Chen & Fei Ye & Wenxi Fu & Yutian Ke & Haoyuan Hong, 2020. "The influence of DEM spatial resolution on landslide susceptibility mapping in the Baxie River basin, NW China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 101(3), pages 853-877, April.
    2. Zhuo Chen & Danqing Song, 2021. "Numerical investigation of the recent Chenhecun landslide (Gansu, China) using the discrete element method," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 105(1), pages 717-733, January.
    3. Peter Mora & David Place, 1993. "A Lattice Solid Model For The Nonlinear Dynamics Of Earthquakes," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 4(06), pages 1059-1074.
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