云南东川蒋家沟泥石流形成条件的初步分析
文献类型：专著章节文集论文
| 语种 | 中文 |
| 作者 | 李椷1; 吴济难2 |
| 发表日期 | 1981-12 |
| 页码 | 26-29 |
| 出版者 | 科学技术出版社重庆分社 |
| 出版地 | 重庆 |
| 关键词 | 形成机理 雨洪型泥石流 蒋家沟 东川 云南 |
| 交替题名 | An Analysis on the Formation Condition of Debris Flows in the Jingjia Gully, Dongchuan, Yunna |
| 英文摘要 | The Jiangjia Gully is one of the gullies the Xiaojiang River basin where largescale debris flows occur frequently destructively. This spoon-shaped basin is characterized by its bare bed rock, broken mountain, steep topography, variable climate with the distinct wet season, and concetrative and intense rainfall. It is quite flows. A rainfall of more than 20mm can make debris flows burst out in the watershed. There is a big store of loose materials, which total 75 million cubic metres or so. The solid materials of debris flows are mainly generated by gravitational erosion. The are affected by the process make up 47% of basin area. The slope of the valley walls generally exceeds 20°. The longitudinal gradients of the gully bed are 7-8% in the lower reaches and 16-35% in the upper reaches respectively. In addition, the exsiting forest area is only 4% of the basin area as a result of serious deforestation. All these favours the generation of debris flows. In this gully, the collecting process of runoff is the process of debris flow flormation. The maximum flood discharge before the occurrence of each debris flow is 2-4 m3/s. |
| 源URL | [http://ir.imde.ac.cn/handle/131551/26980]  |
| 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） |
| 作者单位 | 1.中国科学院成都地理研究所; 2.南京水利科学研究所 |
| 推荐引用方式 GB/T 7714 | 李椷,吴济难. 云南东川蒋家沟泥石流形成条件的初步分析. 重庆:科学技术出版社重庆分社,1981:26-29. |
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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