摘要
根据力学原理和神府 -东胜矿区人为泥石流的特点 ,重点分析准人为泥石流起动的受力状态。准人为泥石流实地放水冲刷和人工降雨模拟实验结果表明 :(1)坡面准人为泥石流起动主要取决于降雨强度、降雨量和坡度 ;(2 )沟道准人为泥石流起动的主要动力是上游来水和沟床比降 ;(3)在准人为泥石流过程中饱和、未饱和、干的松散固体物质共存 ,以此来区别于自然泥石流。在此基础上导出沟道准泥石流起动势函数 ,并分析探讨泥石流过程中的能量传递模式。
According to dynamical principle and man\|made debris flow characteristics in Shenfu\|Dongsheng mine site, dynamic process of man\|made quasi\|debris flow initiation motion was analyzed. The experiments of artificial simulation rainfall and setting water rushing of quasi\|debris flow in field showed that:1)the initiation motion of quasi\|debris flow on slope was decided by rainfall intensity and precipitation and slope inclination; 2)the initiation motion of quasi\|debris flow in gully was decided by upper reaches coming water and slope inclination of gully bed; 3)softened(saturated) and dry loose solid material coexisted in man\|made quasi\|debris flow process. On the base, the initiation motion potential function of quasi\|debris flow in gully was calculated.Finally,transmitting process of motive force and enrgy in debris flow process were discussed.
出处
《中国地质灾害与防治学报》
CSCD
2000年第4期19-22,共4页
The Chinese Journal of Geological Hazard and Control
基金
中国科学院特别支持领域"山地灾害-泥石流、滑坡基础研究"资助项目(编号:961202)
南京大学海岸与海岛开发国家试点实验室资助项目,实验室成果编号SCIEL:21199113
关键词
神府-东胜矿区
准泥石流体
泥石流起动
力能分析
Shenfu-Dongsheng mine site
quasi debris-flow
debris flow initiation dynamic and energy analysis
