Application Research of Matrix Component Method in Hazard Assessment of Debris Flows in Banshanmengou,Sichuan Province
Debris flow disasters pose significant threats to people's lives and properties,making accurate hazard assessment of utmost importance.This paper employs matrix component analysis to evaluate the hazard of debris flows in Banchangmengou,Sichuan Province.The results indicate that eight evaluation indicators can be simplified into two principal components,and through the contribution rates of these components,it is evident that topographical and geomorphological features are the primary factors contributing to debris flow hazards in the area.Based on the ranking of debris flow hazard assessment,the main channel poses the highest hazard,followed by tributary channels 7#,6#,4#,9#,8#,5#,2#,1#,and 3#,with tributary channel 3#exhibiting the lowest hazard.Consequently,corresponding measures,such as reinforcement with anchor rods and increasing vegetation coverage,must be taken to strengthen the main channel and tributary channels 7#and 6#to prevent the occurrence of debris flows.These conclusions provide guidance for debris flow prevention in Banchangmengou and offer new insights into the application of matrix component analysis.
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