首页|Numerical Simulation of the Mass Movement Process of the 2018 Sedongpu Glacial Debris Flow by Using the Fluid-Solid Coupling Method

Numerical Simulation of the Mass Movement Process of the 2018 Sedongpu Glacial Debris Flow by Using the Fluid-Solid Coupling Method

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In the context of global warming and intensified human activities,glacier instability in plateau regions has increased,and glacier debris flows have become active,which poses a significant threat to the lives and property of people and socioeconomic development.The mass movement process of glacier debris flows is extremely complex,so this paper uses the 2018 Sedongpu glacier debris flow event on the Qinghai-Tibet Plateau as an example and applies a numerical simulation method to invert the whole process of mass movement.In view of the interaction between phases in the process of mo-tion,we use the fluid-solid coupling method to describe the mass movement.The granular-flow model and drift-flux model are employed in FLOW3D software to study the mass movement process of gla-cier debris flows and explore their dynamic characteristics.The results indicate that the glacier debris flow lasted for 700 s,and the movement process was roughly divided into four stages,including initia-tion,scraping,surging and deposition;the depositional characteristics calculated by the fluid-solid cou-pling model are consistent with the actual survey results and have good reliability;strong erosion oc-curs during the mass movement,the clear volume amplification effect,and the first wave climbs 17.8 m across the slope.The fluid-solid coupling method can better simulate glacier debris flows in plateau re-gions,which is helpful for the study of the mechanism and dynamic characteristics of such disasters.

glacial debris flowQinghai-Tibet Plateaufluid-solid couplingFLOW3Dmass move-mentdepositional characteristicsdisastersengineering geology

Xing-Yu Long、Yu-Xiang Hu、Bin-Rui Gan、Jia-Wen Zhou

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State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China

College of Water Resource and Hydropower,Sichuan University,Chengdu 610065,China

国家自然科学基金国家自然科学基金Sichuan Youth Science and Technology Innovation Research Team Project

U20A20111419772292020JDTD0006

2024

10.1007/s12583-022-1625-1

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(2)
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