MatDEM-BASED NUMERICAL SIMULATION ANALYSIS OF YANJIAGOU LANDSLIDE EVOLUTION PROCESS

LI Xiao-song; FAN Wen; CAO Yan-bo; QUAN Zhuo-liang

doi:10.13686/j.cnki.dzyzy.2021.02.012

2021 Vol. 30, No. 2

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Article navigation > Geology and Resources > 2021 > 30(2): 199-206

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LI Xiao-song, FAN Wen, CAO Yan-bo, QUAN Zhuo-liang. MatDEM-BASED NUMERICAL SIMULATION ANALYSIS OF YANJIAGOU LANDSLIDE EVOLUTION PROCESS[J]. Geology and Resources, 2021, 30(2): 199-206. doi: 10.13686/j.cnki.dzyzy.2021.02.012

Citation:

LI Xiao-song, FAN Wen, CAO Yan-bo, QUAN Zhuo-liang. MatDEM-BASED NUMERICAL SIMULATION ANALYSIS OF YANJIAGOU LANDSLIDE EVOLUTION PROCESS[J]. Geology and Resources, 2021, 30(2): 199-206. doi: 10.13686/j.cnki.dzyzy.2021.02.012

MatDEM-BASED NUMERICAL SIMULATION ANALYSIS OF YANJIAGOU LANDSLIDE EVOLUTION PROCESS

1.
School of Geology Engineering and Geomatic, Chang'an University, Xi'an 710054, China
2.
Electronic Research Institute of Engineering Investigation and Design, MIIT, Xi'an 710054, China

Received Date: 09 October 2020

Revised Date: 26 November 2020

Publish Date: 28 April 2021

Abstract

Abstract

Through the investigation on the basic geological characteristics of Yanjiagou landslide in Shanyang County of Shaanxi Province, the paper obtains landslide elevation data by means of drone, and establishes a MatDEM-based 3D discrete element model of the landslide movement and accumulation features, which restores the whole process of landslide occurrence and gains the characteristics of movement velocity, sliding distance, and accumulation thickness. It is considered that the Yanjiagou landslide is of high-speed type. The landslide accumulation process is divided into three stages: accelerated collision→overall sliding→deceleration accumulation. The distribution of accumulation thickness shows a general trend of increasing first and then decreasing along the movement direction, reaching the maximum at the back of accumulation body. It is proved that MatDEM is feasible to simulate the landslide evolution process.
- landslide /
- discrete element /
- MatDEM /
- numerical simulation /
- geohazard /
- Shaanxi Province

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References

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