矩阵成分法在四川半扇门沟泥石流危险性评价中的应用研究  

Application Research of Matrix Component Method in Hazard Assessment of Debris Flows in Banshanmengou,Sichuan Province

作　　者：李凯 谷新保 LI Kai;GU Xinbao

机构地区：[1]遂宁高新区市政公用事务中心,四川遂宁629001 [2]南阳理工学院土木工程学院,河南南阳473004

出　　处：《重庆建筑》2024年第9期69-72,共4页Chongqing Architecture

摘　　要：泥石流灾害对人民的生命财产带来巨大的危害,因此,对它的危险性进行准确评价具有重大意义。该文应用矩阵分析法对四川半扇门沟泥石流危险性进行了评价。结果表明:八个评价指标能被简化为两个主成分,且通过主成分贡献率可知地形地貌特征是当地产生泥石流危险的主要因素。按照泥石流危险性评价排名,主沟的危险性最高,其次为7#支沟、6#支沟、4#支沟、9#支沟、8#支沟、5#支沟、2#支沟、1#支沟、3#支沟,危险性最低的为3#支沟。因此,必须采取相应的措施,如锚杆加固措施、提高植被覆盖率等对主沟、7#支沟和6#支沟进行加固,以预防泥石流的发生。这些结论能为半扇门沟泥石流的预防提供指导,同时,也为矩阵分析法的应用提供了新的思路。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.

关 键 词：矩阵成分法 主成分分析方法 半扇门沟 泥石流 

分 类 号：U213.158[交通运输工程—道路与铁道工程]