Novel highway debris flow vulnerability degree calculation method

Abstract

The invention relates to the field of vulnerability degree calculation, in particular to a novel highway debris flow vulnerability degree calculation method. The method comprises the following steps that 1, an evaluation index of the highway debris flow vulnerability degree is selected, wherein objects of the evaluation index comprise a highway structure and a mobile hazard-bearing body; 2, indexdetermination is conducted on the highway structure; 3, the index determined in the step 2 is subjected to scalarization and classification, and the weight of the index is determined; 4, a highway vulnerability evaluation model is built by adopting a multilayer factor analytical method. Accordingly, by starting from the highway disaster prevention requirement, aiming at the highway structure and mobile hazard-bearing body vulnerability characteristic and combining the debris flow disaster-caused characteristic and natural environmental condition, the disaster-caused characteristics of debris flow to a highway under different spacial overlapping conditions are analyzed, the structural function vulnerability characteristic of the highway structure and the random exposure process of the mobile hazard-bearing body are comprehensively considered, an index system and an evaluation module which can interpret the vulnerability of the highway along rivers in the alpine valley region are built,and the highway hazard-bearing body vulnerability degree is subjected to quantitative calculation.

Description

technical field [0001] The invention relates to the field of vulnerability calculation, in particular to a new calculation method for highway debris flow vulnerability. Background technique [0002] As a linear structure, traffic arteries inevitably pass through different natural geographical units. Therefore, the extensive development of debris flow disasters seriously affects the distribution of mountain roads, roadbeds, and the stability of upper and lower slopes. This not only brought great difficulties to the route selection design and engineering construction in the area, but also caused great harm to the main road traffic as a series system. One road was cut off and the whole line was paralyzed, which made road operation difficult and caused huge losses (Cui Peng, 2004 ; Du Ronghuan, 1980). For example, on June 18, 1985, a mudslide in Peilonggou on the Bomi section of the Sichuan-Tibet Highway resulted in the silting of 80 vehicles, interruption of traffic for seven ...

AI Technical Summary

Problems solved by technology

[0004] Through the above analysis, it can be concluded that: (1) The current highway vulnerability research focuses on highway structures (fixed hazard-bearing bodies), and has not yet carried out research on the random exposure process of mobile hazard-bearing bodies (such as vehicles, pedestrians, etc.); (2) Aiming at the vulnerability of highway structures, most studies are based on quantitative statistical analysis, and there are few studies considering the structural strength and functional impact of disaster-bearing bodies

Images