Abstract: This paper expounds in detail micro-features on creep debris flow taken from Huarna beside 212-road in electron microscope. The analytical results identifies that microscope textures includ mixed mass-hold texture, partical mass-hold texture, massive texture and screening texture, and microscropic structures include microslide structure, microl and slide structure,tumbling structure, microbedding siructure,microscraping giooves,crack structures, by-flow structure and coherentmass feature etc.in advance,creep debris flow is a catastrophic geomorphologic process between landslide and general dehos flow.

Key words: creep debris flow, huama in Gansu, electron microscope analysis, microscopic texture, microscopic structure

摘要： 本文以位于国道212线甘肃化马泥石流为例,基于多年来的现场观察及室内电镜分析,比较深入地研究了蠕动性泥石流的显微结构及显微构造特征.结果表明,蠕动性泥石流的微结构有杂基支撑结构、颗粒支撑结构、整体结构及筛状结构;微构造主要包括滑动构造、滑坡构造、翻卷构造、显微层状构造、擦槽、裂缝构造、绕流构造、粘块现象、块状构造等类型.蠕动性泥石流是介于滑坡和泥石流之间的一种过度性灾害地质地貌过程.

关键词: 蠕动性泥石流, 化马, 电镜分析, 微结构, 微构造