Disaster characteristics and optimal design of drainage canal of debris flow following Wenchuan earthquake in Weigou Gully in Beichuan County, Sichuan Province, China
文献类型：会议论文
| 作者 | You Yong ; Liu Jinfeng
|
| 出版日期 | 2011-06 |
| 会议名称 | 5th International conference on Debris-flow Hazards:Mitigation,Mechanics, Prediction and Assessment |
| 会议日期 | 2011.6.14-6.17 |
| 会议地点 | 意大利帕多瓦 |
| 关键词 | Wenchuan earthquake debris flow hazards drainage canal optimal design Weigou Gully Beichuan County |
| 页码 | 805-810 |
| 通讯作者 | You Yong |
| 英文摘要 | The Weigou Gully, a branch of Pingtong River, is located in Guixi Township, Beichuan County. The area was seriously affected by the Wenchuan earthquake and its aftermath. Debris flows occurred on September 24, 2008, July 14, 2009, and September 10, 2009, threatening the safety of the inhabitants and their property. Debris flows in Weigou Gully were mainly supplied by landslides triggered by the earthquake. The debris flows had characteristics of high frequency, high bulk density and coarse particle size. Following the earthquake, the frequency of debris flows increased. Based on the analysis of the disaster characteristics, the optimal cross-section design method for the “trapezoid-v” shaped debris flow drainage canal of the Weigou Gully is discussed. The depths (h1 and h2) of the cross-section of the “trapezoid- v” shaped drainage canal and the optimal crosssection parameters using these two measurements are defined. In addition, several formulas for calculating the cross-section measurements are deduced under optimal hydraulic conditions when discharge (Q), debris grain composition (D50 and D10) and longitudinal ratio (I) are known. Finally, the optimal dimensions for the cross-section of the Weigou Gully debris flow canal are determined. |
| 收录类别 | EI |
| 会议主办者 | 5th International conference on Debris-flow Hazards:Mitigation,Mechanics, Prediction and Assessment |
| 会议录 | 5th International conference on Debris-flow Hazards:Mitigation,Mechanics, Prediction and Assessment
 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4758]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 推荐引用方式 GB/T 7714 | You Yong,Liu Jinfeng. Disaster characteristics and optimal design of drainage canal of debris flow following Wenchuan earthquake in Weigou Gully in Beichuan County, Sichuan Province, China[C]. 见:5th International conference on Debris-flow Hazards:Mitigation,Mechanics, Prediction and Assessment. 意大利帕多瓦. 2011.6.14-6.17. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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