Study on the rainfall and aftershock threshold for debris flow of post-earthquake
文献类型：期刊论文
| 作者 | He Siming1,2 ; Li Dexin1,2; Wu Yong1,2; Luo Yu1,2
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 8期号:5页码:750-756 |
| 关键词 | Earthquake Hydrological model Debris flow Rainfall threshold |
| ISSN号 | 1672-6316 |
| 通讯作者 | He, SM （何思明） |
| 英文摘要 | Due to the special condition of provenance and disaster environment after "5 center dot 12" Earthquake, the probability and conditions of the occurrence of gully debris flow change greatly after the event, which make it difficult to prevent disaster effectively. In this study the hydrological model of ground water table in loose sediment is established. According to infinite slope theory, the safety factor of deposits is defined as the ratio of resistance force to driving force. The starting condition of post-earthquake gully debris flow is clearly studied by analyzing the effects of rainfall intensity, seismic strength, slope gradient and mechanical properties on the balance of accumulation body. Then the formulas of rainfall and aftershock threshold for starting of gully debris flow are proposed, and an example is given to illustrate the effect of rainfall, aftershocks and their coupling action on a debris flow. The result shows the critical rainfall intensity decreases as the lateral seismic acceleration and channel gradient increases, while the critical intensity linearly increases as the friction angle increases. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | INDUCED LANDSLIDES ; MODEL ; DURATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000294964500013 |
| 公开日期 | 2013-06-25 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5485]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | He Siming,Li Dexin,Wu Yong,et al. Study on the rainfall and aftershock threshold for debris flow of post-earthquake[J]. JOURNAL OF MOUNTAIN SCIENCE,2011,8(5):750-756. |
| APA | He Siming,Li Dexin,Wu Yong,&Luo Yu.(2011).Study on the rainfall and aftershock threshold for debris flow of post-earthquake.JOURNAL OF MOUNTAIN SCIENCE,8(5),750-756. |
| MLA | He Siming,et al."Study on the rainfall and aftershock threshold for debris flow of post-earthquake".JOURNAL OF MOUNTAIN SCIENCE 8.5(2011):750-756. |
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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