南水北调西线一期工程区达曲流域泥石流及发展趋势
文献类型：期刊论文
| 作者 | 游勇 ; 柳金峰; 欧国强
|
| 刊名 | 山地学报
 |
| 出版日期 | 2005 |
| 卷号 | 23期号:6页码:719-724 |
| 关键词 | 南水北调西线一期工程 达曲流域 泥石流 发展趋势 |
| 其他题名 | The Debris Flows and Their Development Trend of Daqu Watershed in the West Line of Water Diversion Projectfrom South to North of China |
| 通讯作者 | 柳金峰 |
| 合作状况 | 其它 |
| 中文摘要 | 南水北调西线一期工程区位于青藏高原的东北缘，具有复杂的地形地貌、岩性和区域构造背景，受自然因素控制和人类活动影响，尤其是工程建设对山地表层大规模的扰动，泥石流将成为工程施工和运行期间的重要灾害。通过野外考察和调查，查明了达曲流域的泥石流分布情况，得出达曲流域泥石流具有规模中等，危害严重；以冲为主，冲淤强烈；泥石流固体物质粒径粗；泥石流活动频率较低等特点。并在此基础上，分析了达曲流域泥石流的发展趋势。 |
| 英文摘要 | The west line of water diversion project from south to north of China lies in the northeast edge of the Tibetan plateau and has complex topography, landform , lithology and regional tectonic setting. The debris flows will be great danger because the influence of natural factors and people＇ s activity, especially the largescale disturbance of project building on mountain surface. This paper detected existing distributing of debris flows in Daqu watershed based on the spot investigation. Daqu watershed distributes 21 debris flows, therein, 13 debris flow in left bank and 8 debris flow in right bank. The characteristic is as follows： ①middle-scale and great damage： There are 5 debris flows with little-scale （debris flow＇ s scale of 100-year return period less than 1 × 10^4 m^3）, 14 debris flows with middle-scale （debris flow＇ s scale of 100-year return period ranging from 1 × 10^4 m^3 to 1 × 10^5 m^3） and 2 debris flows with large-scale （debris flow＇ s scale of 100-year return period larger than 1 × 10^4 m^3 . Each scale contributes 23.8%, 66.7% and 9.5% of the total respectively. ②strong impact and deposition： the debris flow with 200%0 channel slope contributes 95.23% of the total amount in Daqu watershed. The debris flow can move quickly along the steep channel. It scours the bed of the channel strongly especially in the concave bank. ③thick material： there are 19 viscous debris flows and 2 turbulent debris flows in Daqu watershed. The rate of large gravel is very high in these debris flows. It shows that these debris flows have large transporting force, bumping force and damage. ④low frequency activity： on the basis of the characteristics, this paper analyses the development trend of debris flows in Daqu watershed. It shows that the intensity of the debris flow will become greater and have larger damage to the West Line of Water Diversion Project From South to North Under the condition of violent earth- quake, high-intensity rainstorm and unreasonable human activity. |
| 分类号 | P642.23 |
| 资助信息 | 中国科学院知识创新工程重要方向项目“南水北调西线工程山地灾害防治技术及环境影响研究” |
| 语种 | 中文 |
| 公开日期 | 2010-07-07 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/421]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 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 | 游勇,柳金峰,欧国强. 南水北调西线一期工程区达曲流域泥石流及发展趋势[J]. 山地学报,2005,23(6):719-724. |
| APA | 游勇,柳金峰,&欧国强.(2005).南水北调西线一期工程区达曲流域泥石流及发展趋势.山地学报,23(6),719-724. |
| MLA | 游勇,et al."南水北调西线一期工程区达曲流域泥石流及发展趋势".山地学报 23.6(2005):719-724. |
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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