摘要
在对麻柳沟区域地形地质以及气候条件调查研究的基础上,设计并完成暴雨条件下麻柳沟区域坡面泥石流模型试验。通过物理模型试验,模拟区域坡面在降雨条件下的变形和破坏特征。通过对试验现象以及数据进行观测分析,研究暴雨条件下坡面侵蚀、溜滑以及由此引发的土体转化为泥石流的全过程。模型试验表明:麻柳沟区域坡面泥石流类型为降雨型、阵型、滑坡型泥石流;强降雨条件下,泥石流形成与表面冲刷及饱和土体浅层滑动有密切关系;泥石流形成大概可分为以下几个阶段:土体浸润→蠕变→局部溜滑→局部产流冲蚀→大规模滑动→泥石流体形成。
On the basis of a survey of the topography,composition and climatic conditions of the Maliugou area,this paper designs and completes the physical model test to simulate the deformation and failure characteristics of the debris flow under the condition of rainstorm. Through observation and analysis of experimental phenomena and data,this paper studies the hill slope erosion,slippery soil and the whole process of the consequent soil transformed into a debris flow. This model test indicates that the type of the Maliugou debris flow can be defined as rainstorm,burst and landslide; the formation mode of the slope debris flow is surface erosion and the saturated soil landslide are damaged and transformed into debris flow. The development of soil failure can be approximately divided into the following phases： soil infiltration → creep deformation → local slippery → local runoff erosion → large-scale sliding → the formation of debris flow.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2014年第4期119-124,共6页
Hydrogeology & Engineering Geology
基金
国家科技重大专项课题"面向地质灾害监测预警的传感器网络研发与应用验证"之子课题"滑坡泥石流单体监测预警系统(2010ZX03006-007)
