| Planar Velocity Distribution of Viscous Debris Flow at Jiangjia Ravine, Yunnan, China： A Field Measurement Using Two Radar Velocimeters |
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| 引用本文： | FU Xudong WANG Guangqian KANG Zhicheng FEI Xiangjun. Planar Velocity Distribution of Viscous Debris Flow at Jiangjia Ravine, Yunnan, China： A Field Measurement Using Two Radar Velocimeters[J]. 武汉大学学报:自然科学英文版, 2007, 12(4): 583-587. DOI: 10.1007/s11859-006-0297-5 |
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| 作者姓名： | FU Xudong WANG Guangqian KANG Zhicheng FEI Xiangjun |
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| 作者单位： | [1]State Key Laboratory of Hydroscience and Engineering,Tsinghua University, Beijing 100084, China [2]Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （50221903, 50309007） |
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| 摘 要： | Characteristics of planar velocity distribution of viscous debris flow were analyzed using the measured data at Jiangjia Ravine, Yunnan, China. The velocity data were measured through using two radar velocimeters. The cross-sectional mean velocities were calculated and used to examine Kang et al＇s （2004） relationship, which was established for converting the flow velocity at river centerline measured by a radar velocimeter into the mean velocity based on the stop-watch method. The velocity coefficient, K, defined by the ratio of the mean velocity to the maximum velocity, ranges from 0.2 to 0.6. Kang et al＇s （2004） relationship was found being inapplicable to flows with K smaller than 0.43. This paper contributes to show the complexity of the planar velocity distribution of viscous debris flows and the applicability of Kang et al＇s relationship.
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| 关 键 词： | 泥石流 平面速度测量 速率系数 中国 云南 雷达速度计 |
| 文章编号： | 1007-1202（2007）04-0583-05 |
| 收稿时间： | 2006-08-17 |
| 修稿时间： | 2006-08-17 |
Planar velocity distribution of viscous debris flow at Jiangjia Ravine,Yunnan, China: A field measurement using two radar velocimeters |
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| Fu Xudong,Wang Guangqian,Kang Zhicheng,Fei Xiangjun. Planar velocity distribution of viscous debris flow at Jiangjia Ravine,Yunnan, China: A field measurement using two radar velocimeters[J]. Wuhan University Journal of Natural Sciences, 2007, 12(4): 583-587. DOI: 10.1007/s11859-006-0297-5 |
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| Authors: | Fu Xudong Wang Guangqian Kang Zhicheng Fei Xiangjun |
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| Affiliation: | (1) State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, 100084, China;(2) Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, Sichuan, China |
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| Abstract: | Characteristics of planar velocity distribution of vis-cous debris flow were analyzed using the measured data at Jiangjia Ravine,Yunnan,China. The velocity data were measured through using two radar velocimeters. The cross-sectional mean velocities were calculated and used to examine Kang et al's(2004) relation-ship,which was established for converting the flow velocity at river centerline measured by a radar velocimeter into the mean velocity based on the stop-watch method. The velocity coefficient,K,defined by the ratio of the mean velocity to the maximum ve-locity,ranges from 0.2 to 0.6. Kang et al's(2004) relationship was found being inapplicable to flows with K smaller than 0.43. This paper contributes to show the complexity of the planar velocity distribution of viscous debris flows and the applicability of Kang et al's relationship. |
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| Keywords: | viscous debris flow planar velocity velocity coefficient Jiangjia ravine radar velocimeter |
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