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《Journal of Mountain Science》 2009-04
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Analysis of Rheological Characteristics of Soil in Source Area of Debris Flow to Answer Process to Rainfall

WANG Yuyi1,2,JAN Qiandeng 3,YONG Hong1,2,TIAN Bing 4,ZOU Renyuang 2 (1.Key Laboratory of Mountain Hazards and Surface Process,Chinese Academy of Sciences,Chengdu 610041,China;2.Chengdu Institute of Mountain Hazards & Environment,Chinese Academy of Sciences,Chengdu 610041,China;3.Dept.of Hydraulics & Ocean Engineering,Cheng Kung University,Tainan 70101,China;4.College of Resources & Environment Science,Hebei Normal University,Shijiazhuang 050061,China)  
Rheological characteristic of soil on collapse-landslid and stream slop in debris flow formation-zone to answer process to rainfall are analyzed in this article,which is through different periods of rainy season,observation of different soil moisture status after rainfall Infiltration and season change of fountain..Analyzed results indicated that the rheological characteristics of soil on collapse-landslid in debris flow formation will answer different process to rainfall.The soil moisture on free face of landslide is 6.67%、4.8% respectivelly in rainy season,activity in landslide mostly is supplied down gully bed by collapse manner action passed its forward edge.It is easily thixotropic liquefaction for the soil to locate limit stress state under infiltrate and washed out of rainfall,because the soil in collapse is the most loose,also when the soil moisture generally is higher 8.85%~16% in rainy season.Then it will translate into eroded process of debris flow with hiper-consentration.
【Fund】: 自然科学基金资助(40671026)~~
【CateGory Index】: P642.23
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【Citations】
Chinese Journal Full-text Database 4 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 BAI Li-ping(Beijing Institute of Geology,Beijing 100011,China);THE RESEARCH ON CRITICAL RAINFALL FOR DEBRIS FLOW IN THE MOUNTAINOUS AREA OF BEIJING[J];Journal of Geological Hazards and Environment Preservation;2006-04
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