Risk Assessment of Glacier Debris Flow on Zhamo Highway Based on Numerical Simulation
Chao Zhiyuan
Tian Rongyan
Abstract：As global temperatures continue to rise,glacier debris flows are becoming more frequent,posing a serious threat to highways.In order to study the potential hazards of glacier debris flow to highways,this paper uses FLO-2D software and takes the Zhamo debris flow as a case to evaluate the risk of debris flow in Sangugou Basin by simulat-ing the mud depth and flow velocity of debris flow under four different return periods.The results showed that the ac-cumulation areas under the four return periods were 28.96×104 m2,43.87×104 m2,52.99×104 m2,and 58.91×104 m2,respectively.The high-risk areas of the four debris flow with different return periods accounted for more than 50％,the medium-risk areas acounted for about 20％,and the low-risk areas accounted for about 15％.Sanggugou is a high-risk debris flow area.The evaluation results provide a scientific reference for the disaster prevention and mitigation work of Zhamo highway,and the evaluation system can provide a reference for the risk assessment of glacier debris flow in the future.
Keywords：Glacier debris flowHazard assessmentNumerical simulationFLO-2D
Publication Date：2025-01-27
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 68-73 )