泥石流流域地貌发育阶段的定量分析

The Quantitative Analysis on the Stage of the Geomorphologic Evolution in Debris Flow Area

泥石流在山区时常爆发,直接造成巨大的财产损失,威胁人们的生命安全,而泥石流的成因又复杂,难以做到准确地预测预报。以曼家寨铁矿区的泥石流为研究对象,借助GIS的软件,运用A.N.Strahler的面积一高程分析法定量分析研究泥石流流域地貌演化阶段。结果表明,大部分发生在地貌发育的壮年期阶段。这一结论希望能为防治预报泥石流提供一定的依据。

Debris flow,often occurs in the mountain area, causes serious property loses and threatens people＇ s life. The formation of debris flow is so complicated that can＇ t be predicted accurately. Here the paper takes ManJiaTuo iron mine as an instance, and quantitatively analyzes the stage of the geomorphologic evolution in debris flow area based on GIS software and area-altitude method of A. N. Strahler. The result shows that debris flow is most likely to take place in the adolescent stage of geomorphologic evolution,which will provide certain basis for prediction and prevention of debris flow.