西南山区泥石流沟流域形态统计分析——以云南小江流域为例

Statistical Analysis of Valley Morphology on Debris Flow Gully in Mountain Area of Southwest——Taking Xiaojiang Valley in Yunnan Province as Example

泥石流沟谷因泥石流类型和发育阶段不同而具有多种形态,对其进行研究具有十分重要的理论和实际意义。通过对小江流域32条灾害性泥石流沟的流域面积、主沟长、平均沟床比降、流域平均宽度进行统计分析,得出了几点结论,为泥石流危险度评价和防治工作提供了参考。

Debris flow gully has various morphologies because of different type and developed phase of debris flow, and it is important and practical to study the debris flow gully. The valley area,gully length, average bed slope and average valley width of 32 disastrous debris flow gully are analyzed. At last, several conclusions are got, and they will give reference to the assessment of debris flow hazards and prevention to debris flow.