水科学进展2018，Vol.29Issue(1)：64-72,9.DOI:10.14042/j.cnki.32.1309.2018.01.008
基于模型试验的泥石流坡面物源启动预警模型
Warning model study of debris flow slope source starting based on experimental method
摘要
Abstract
To further realize the correlation between rainfall and the starting mechanism of the slope debris flow in the source area of Yindongzi gully,a typical model was selected after a detailed fieldwork and engineering investigation.The rainfall intensity and gradient were set as control variables using 20 large artificial rainfall physical model tests under four gradients and five rainfall intensity conditions to research the instability mechanism and failure patterns of the slope debris flow.The experimental results revealed the starting and failure model of the source of the loose slope and the response relationship of the surface deformation and the underground physical mechanical parameters.Then,a traditional I-D (rainfall intensity—duration) early warning model was established.Next,reliable warning parameters (i.e.gradient and moisture content) were extracted and the exponential model and means of the mathematical regression analysis were used to determine the IGD and IGM multi-parameter forecast model,while the traditional model was effectively modified for dependability and practical utility.关键词
坡面物源/启动/人工降雨模型试验/预警临界值/滑坡Key words
slope loose source/starting/artificial rainfall model test/warning threshold/landslide分类
建筑与水利引用本文复制引用
乔建平,李明俐,杨宗佶,孟华君,姜元俊..基于模型试验的泥石流坡面物源启动预警模型[J].水科学进展,2018,29(1):64-72,9.基金项目
国家自然科学基金资助项目(41771021 （）
41471429)The study is financially supported by the National Natural Science Foundation of China (No.41771021 （）
No.41471429). （）
