| “东川型”排导槽结构对泥石流流速影响的实验研究 |
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| 引用本文： | 黄海,马东涛,王显林.“东川型”排导槽结构对泥石流流速影响的实验研究[J].山地学报,2009,27(5). |
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| 作者姓名： | 黄海 马东涛 王显林 |
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| 作者单位： | 1. 中国科学院水利部成都山地灾害与环境研究所,四川,成都,610041;中国科学院研究生院,北京,100049
2. 中国科学院水利部成都山地灾害与环境研究所,四川,成都,610041;中国科学院山地灾害与地表过程重点实验室,四川,成都,610041 |
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| 基金项目： | 地质灾害防治与地质环境保护国家重点实验室开放基金资助项目 |
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| 摘 要： | 消能肋槛和排导槽纵比降是控制"东川型"泥石流排导槽内流体运动的两个关键因素.泥石流流速是反映排导槽工程输移力及对排导槽的冲刷淤积破坏的重要参数之一.通过实验,对固定配比的泥石流流体在不同的肋槛组合下的排导槽中的流速进行了研究,结果表明:(1)肋槛间距从40 cm增加至60 cm时,泥石流流速先增加后减少,在间距50 cm时达到最大值;(2)肋槛高度对泥石流流速的影响非常复杂,在不同的肋槛间距和纵比降下表现不同的相关关系;(3)纵比降对排导槽内的泥石流流体基本呈正相关;(4)得到了肋槛间距与肋槛高度之比值N与泥石流流速V之间关系的数学表达式:V=0.0341N+C,其中C为常量.
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| 关 键 词： | "东川型"排导槽 泥石流 流速 肋槛 纵比降 |
Experimental Study on the Relationships between the Velocity of Debris Flow and Structure of the Dongchuan Debris Flow Channel |
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| HUANG Hai,MA Dongtao,WANG Xianlin.Experimental Study on the Relationships between the Velocity of Debris Flow and Structure of the Dongchuan Debris Flow Channel[J].Journal of Mountain Research,2009,27(5). |
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| Authors: | HUANG Hai MA Dongtao WANG Xianlin |
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| Institution: | 1.Institute of Mountain Hazards and Environment;Chinese Academy of Sciences & Ministry of Water Conservancy;Chengdu 610041;China;2.Graduate School of the Chinese Academy of Sciences;Beijing 100049;3.Key Laboratory of Mountain Hazards and Surface Processes;the Chinese Academy of Sciences;China |
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| Abstract: | The debris flow velocity is one of important parameters on describe the transport capacity,deposition and erosion damage of debris flow channel.The Dongchuan debris flow channel is the most wide used type of channel with the characteristic of soft foundation energy dissipation in China,which is created by pre-scholars in the long time practice of debris flow mitigation.For the Dongchuan Channel,the threshold and gradient are two key factors to control the movement of debris flow in channel.By using a dynami... |
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| Keywords: | Dongchuan channel velocity debris flow threshold gradient |
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