基于CDEM颗粒流的三维高速远程滑坡成灾范围分析

doi:10.13722/j.cnki.jrme.2022.0763

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Abstract The high-speed long-distance landslide is a landslide disaster with extremely strong destructive force. Its typical movement feature is that the landslide mass is transformed into debris particle flow after the instability. It is a typical progressive failure process from continuous to discontinuous. This study is based on the continuous discontinuous element method，and then the particle element method is introduced. The sliding body with large displacement and deformation is calculated by discrete element method，and the sliding bed with small deformation and displacement is calculated by finite element method. A high-precision three-dimensional geological disaster model is established based on the topographic and geomorphologic data of the landslide area. In the calculation process，the strength reduction caused by friction and collision in the sliding process of rock mass is considered，and the disaster range is analyzed numerically. By comparing the simulation results with the field investigation data，it is determined that the calculated accumulation shape and range of the sliding body are in line with the actual situation. Based on the energy and velocity monitoring data，two high-speed remote landslides were quantitatively analyzed.

Key words： slope engineering continuum-discontinuum element method grain flow high-speed remote landslides hazard range numerical simulation

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	Articles by authors
	NIU Ben1
	FENG Chun2
	CONG Junyu3
	SUN Zizheng4
	ZHANG Yiming1

Cite this article:

NIU Ben1,FENG Chun2,CONG Junyu3, et al. Three-dimensional high-speed remote landslide disaster area analysis based on CDEM particle flow[J]. , 2023, 42(S2): 4018-4027.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0763 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/IS2/4018

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