Risk Assessment of Debris Flow Based on Multi-Objective Fuzzy Pattern Recognition Method in Mountain Highway Construction

摘要

It is inevitable that road routes cross the valley landforms in the construction of mountain road, and the debris flow risk assessment is one of the important basis works of engineering geological investigation. This paper presents the evaluation indexes and the classification standards of the danger evaluation based on the surveying data of road and analysis of the developing characteristic, formation conditions and influent factors of the debris flow in mountain highway construction area, Zhangjiakou city. With the multi-objective fuzzy pattern recognition method, the evaluation model is also established. With this model, the 15 debris flow valleys in the construction area are evaluated. The result is consistent with the field surveying result, which proves that the model represented by this paper is feasible and effective, and the results can reflect the actual situation. Thus, the multi-objective fuzzy pattern recognition method can be one of the methods to evaluate the danger grade of the debris flow.