Numerical analysis of the initiation and sliding process of the Yigong landslide using a continuous–discontinuous method

Cai, Ziyin; Liu, Enlong; Chen, Ningsheng; Feng, Jili; Hu, G. T.; Su, Yu

doi:10.1007/s12665-022-10279-y

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…In this paper, the strength parameters of the upper strongly weathered tuff and the lower fresh grey ridge-bearing marl of the slide were determined separately by indoor uniaxial compression tests combined with the Engineering Geology Handbook (China Construction Industry Press, 2018). 4 Geofluids…”

Section: Determination Of Fine Physical and Mechanicalmentioning

confidence: 99%

“…In recent years, with the rapid development of computer technology, numerical simulation has been widely used in landslide hazard research with its outstanding advantages such as low cost, good repeatability, and easy and flexible parameter setting [1]. Huang et al [2][3][4][5] reproduced the complete motion process of high-speed remote landslides through various simulation methods such as DDA and finite difference method and conducted an in-depth study on the remote sliding mechanism of high-speed remote landslides. Zhao et al [6] combined simulation and experiment to conduct a comprehensive and systematic study of fluidization, which reveals the disintegration and fragmentation effects during landslide collisions, aerodynamic effects during the high-altitude flight phase, and the high-speed sliding mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of Dynamic Evolution Characteristics of a Large Rock Landslide in Tangjiashan

et al. 2022

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The study of landslide dynamic characteristics and accumulation patterns is of great significance for the quantitative evaluation of landslide hazards. This paper takes the Tangjiashan landslide as a research case, a real 3D model was established based on high precision DEM data to determinate the terrain characteristics and pre- and postlandslide image data to determinate the shape and size of the sliding body. Particle flow 3D program (PFC3D) is carried out to reappear the complete movement of the Tangjiashan landslide. And the dynamic characteristic factors are monitored and analyzed such as the velocity and displacement of the landslide body. The result shows that the Tangjiashan landslide is a traction-type landslide, which lasts about 37 s in total and can be divided into four stages: destabilization and destruction, collapse and accelerated sliding, high-speed sliding, and deceleration and accumulation. The maximum sliding distance is about 642.05 m and the maximum sliding speed is about 38.67 m/s. This is a typical high-speed short-range landslide, and the speed of sliding body surface is much greater than that of other parts, which show an obvious characteristic of clastic flow. In the Tangjiashan landslide, the slip distance is the controlling factor in determining the speed of the landslide at different locations.

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Section: Determination Of Fine Physical and Mechanicalmentioning

confidence: 99%