基于数值模拟的扎墨公路冰川泥石流危险性评价  

Risk Assessment of Glacier Debris Flow on Zhamo Highway Based on Numerical Simulation

作　　者：晁志远 田荣燕[1] Chao Zhiyuan;Tian Rongyan(Xizang University College of Engineering,Lhasa 850000,China)

机构地区：[1]西藏大学工学院,拉萨850000

出　　处：《西藏科技》2025年第1期68-73,共6页Xizang Science And Technology

基　　金：西藏大学研究生高水平人才培养计划项目(2022-GSP-S017)。

摘　　要：随着全球温度不断上升,冰川泥石流发生频率不断增加,对公路构成严重威胁。为了研究冰川泥石流对公路的潜在危险性,文章采用FLO-2D软件,以西藏自治区扎墨公路泥石流—桑谷沟泥石流为例,通过对4种不同重现期下泥石流泥深和流速的模拟,进行桑谷沟流域泥石流危险性评价。结果可知,4种重现期下的堆积面积分别为28.96×104 m^(2)、43.87×104 m^(2)、52.99×104 m^(2)、58.91×104 m^(2);研究区域内4种不同重现期的泥石流高危险性区占比均超50%,中危险区占比面积在20%左右,低危险区占比面积在15%左右,该沟属于高危险泥石流。评价结果对扎墨公路的防灾减灾工作提供了科学的参考依据,评价体系可为以后的冰川泥石流的危险性评价提供参考。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 simulating the mud depth and flow velocity of debris flow under four different return periods.The results showed that the accumulation areas under the four return periods were 28.96×104 m^(2),43.87×104 m^(2),52.99×104 m^(2),and 58.91×104 m^(2),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 highrisk 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.

关 键 词：冰川泥石流 危险性评价 数值模拟 FLO-2D 

分 类 号：P64[天文地球—地质矿产勘探]