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泥石流是发生在沟谷和坡地的饱含小至粘土、大至巨砾的固液两相流体,是山区地表物质破坏迁移的一种特殊的地貌过程。它可以在极短暂的时间内完成复杂的侵蚀——搬运——堆积作用,是各种自然因素和人类活动综合作用的产物。 云南省东北部的小江流域是我国泥石流分布集中,暴发频繁,形态多样,危害严重地区。研究泥石流的分类和特征将对开展泥石流防治有重要意义。泥石流分类问题目前国内有一些研究,但各部门的分类方法和标准也不一致,本文结合小江流域的实际情况,进行如下分类。
Debris flow occurs in the valley and the slopes full of small to clay, large boulders of solid-liquid two-phase fluid, is the destruction of the mountain surface material migration of a special landscape process. It can be accomplished in a very short period of time complex erosion - handling - accumulation, is a combination of natural and human activities product. The small river basin in the northeast of Yunnan Province is the focus of debris flow distribution in our country, frequent outbreaks, diverse forms, and endangering serious areas. Studying the classification and characteristics of debris flow will be of great significance for the prevention and control of debris flow. At present, there are some studies on the debris flow classification in China, but the classification methods and standards of each department are also inconsistent. Based on the actual situation of the Xiaojiang River Basin, the paper sorts the following problems.