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| 蒋家沟泥石流入汇时小江悬移质输沙特征分析 | |
| 引用本文： | 张金山,屈益,林伟,张应良.蒋家沟泥石流入汇时小江悬移质输沙特征分析[J].水土保持研究,2011,18(6):37-41. |
| 作者姓名： | 张金山 屈益 林伟 张应良 |
| 作者单位： | 1. 中国科学院山地灾害与地表过程重点实验室,成都610041／中国科学院水利部成都山地灾害与环境研究所,成都610041 2. 陕西省地矿局第六地质队,西安,710611 3. 昆明理工大学建筑工程学院,昆明,650093 |
| 基金项目： | 国家自然科学基金“泥石流入汇主河后泥沙输移规律研究”(40871024) |
| 摘 要： | 以2009年8月4日蒋家沟的一场泥石流入汇小江后泥沙观测资料为基础,分析了蒋家沟泥石流入汇小江后的泥沙输移特征。泥石流为小江直接提供了大量的悬移质泥沙,导致入汇时小江输移的泥沙量剧增,输沙率达到了平时的5倍以上;部分堆积于入汇口的泥石流固体物质也在泥石流结束后受小江水流冲刷再次起动,使小江悬移质输沙率在泥石流结束后呈平稳下降,与蒋家沟呈幂曲线下降形成明显的区别。由于泥石流输入的泥沙中细颗粒更容易被小江水流输移,因此尽管入汇的泥石流泥沙中粗颗粒含量较高,但在小江泥沙中含量增加的却是较细的粉沙、黏土颗粒,小江悬移质的中值粒径与含沙量、输沙率和流量的关系曲线都呈上凸形。 |
| 关 键 词： | 蒋家沟 泥石流 小江 悬移质输沙 |
Suspended Load Characteristics of Xiaojiang River in the Scenario of Debris-Flow Afflux from Ravine |
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| ZHANG Jin-shan,QU Yi,LIN Wei,ZHANG Yin-liang.Suspended Load Characteristics of Xiaojiang River in the Scenario of Debris-Flow Afflux from Ravine[J].Research of Soil and Water Conservation,2011,18(6):37-41. | |
| Authors: | ZHANG Jin-shan QU Yi LIN Wei ZHANG Yin-liang |
| Institution: | ZHANG Jin-shan1,2,QU Yi3,LIN Wei1,ZHANG Yin-liang4(1.Key Laboratory of Mountain Hazard and Surface Processes,Chinese Academy of Sciences,Chengdu 610041,China,2.Institute of Mountain Hazards and Environment,Chinese Academy of Sciences& Ministry of Water Conservancy,3.The No.6 Geological Team of the Shaanxi Bureau of Geology and Mineral Resources,Xi'an710611,4.College of Architectural Engineering,Kunming University of Science and Technology,Kunming 650093,China) |
| Abstract: | The characteristics of sediment flows in the Xiaojiang River was studied when debris flowed into this river,and the solids transport is systematically investigated.A debris flow occurred on Aug.14,2009,in the Jiangjia Ravine was observed and the process of the afflux to the Xiaojiang River was also monitored.With the observation data,the flow of the suspended load in the Xiaojiang River was analyzed after the afflux of debris-flow.Debris flows usually provide a large number of suspended loads for the Xiaoji... |
| Keywords: | the Jiangjia Ravine debris-flow Xiaojiang River suspended load |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |