The Mechanism for the Slumping Congeries Starting Response to Rainfall
The starting process of slumping congeries is the key of Landslide fluidization.Taking Jinlong gully of Yalong River as a typical instance, the characteristics of slumping congeries on the response of heavy rainfall are analyzed firstly, then dynamic mechanism is made to retrieve the starting of slumping congeries by mechanical model .Finally, Conclusions of slumping congeries starting response to rainfall are given:(l)The response to r:i nfall amount is reflected in the transition period of the dry season to rainy season when transformation of debris flows are concentrative happened.(2) The response to rainfall intensity is characterized !v short-term index of rainfall intensity, and after calculating the index of rainfall intensity in Jinlong gully, debris flow is likely to outbreak when the index is greater than 800.(3) Taking a loose debris body as the simplited mechanics model, the starting process of slumping congeries is that under the he ivy rainfall the increased water force and decreased soil cohesions reduce the stability and then lead to the starting of the s limping congeries and generate debris flow.Ail the conclusions and results in the paper can provide references for the theory study of landslide fluidization and the starting of debris flow.
Slumping congeries landslide fluidization starting of debris flow Jinlong gally of Yalong River
Cui Yun Kong Jiming
Institute of Mountain Hazards and Environment,Chinese Academy of Sciences Graduated University of Ch Key Laboratory of Mountain Hazards and Earth Surface Processes,Chinese Academy of Sciences Institute
国际会议
成都
英文
278-281
2011-07-15（万方平台首次上网日期，不代表论文的发表时间）