| 粗细颗粒同时存在时的流动阻力 |
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| 引用本文： | 万兆惠,华景生.粗细颗粒同时存在时的流动阻力[J].山地学报,1991(3). |
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| 作者姓名： | 万兆惠 华景生 |
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| 作者单位： | 水利部水利水电科学研究院泥沙研究所
(万兆惠)，水利部水利水电科学研究院泥沙研究所(华景生) |
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| 基金项目： | 中国科学院东川泥石流观测研究站基金 |
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| 摘 要： | 为了研究同时存在粗细颗粒的流动阻力,进行了一组专门设计的试验。分析试验资料结果表明:由细的粘土颗粒引起的粘性力与由粗颗粒引起的离散力是可以线性叠加的。离散力是由于粗颗粒相互之间的碰撞,以及粗颗粒与边壁之间的碰撞所造成的。而粘土颗粒的絮凝作用形成絮团和絮网结构,它们对粗颗粒之间的碰撞起到缓冲作用。因而当有细的粘土颗粒存在时,离散力大幅度降低。
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| 关 键 词： | 泥石流 阻力 离散力 粘性力 絮网结构 |
RESISTANCE CONSISTING OF BOTH VISCOUS FORCE AND DISPERSIVE FORCE |
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| Wan Zhaohui Hua Jingsheng.RESISTANCE CONSISTING OF BOTH VISCOUS FORCE AND DISPERSIVE FORCE[J].Journal of Mountain Research,1991(3). |
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| Authors: | Wan Zhaohui Hua Jingsheng |
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| Institution: | Institute of Water Conservancy and Hydroelectric Power Research |
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| Abstract: | A set of specially desinged experiments have been carried for studying the resistance of a flow consisting of water and both fine and coarse particles. The viscous force caused by fine caly particles and the reduced dispersive force are linearly addible. The dispersive force caused by collision of coarse particles reduces to a great degress due to the cushioning effect of the flocculent structures formed by fine particles. The preliminary result is presented in this paper and further study is needed. |
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| Keywords: | debris flow resistance dispersive force viscous force flocculent structure |
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