Landslides & debris flows formation from gravelly soil surface erosion and particle losses in Jiangjia Ravine
文献类型：期刊论文
| 作者 | Hu Ming-jian1,2; Pan Hua-li3,4 ; Wei Hou-zhen1,2; Wang Ren1,2; A Ying1,2
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
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| 出版日期 | 2013-12-01 |
| 卷号 | 10期号:6页码:987-995 |
| 关键词 | Gravelly soils Erosion process Particle losses Runoff sediment content JiangJia Ravine |
| ISSN号 | 1672-6316 |
| 通讯作者 | PAN Hua-li |
| 英文摘要 | Gravelly soils are made up of gravel, sand, silt and clay. They are widely used in engineering applications such as rock-fill dams with clay cores, which are the main researches at present. The strength and mechanical properties of the gravelly soils are affected by the content of coarse grain, fine particles, and their adhesive states. These Properties can be verified by laboratory unconsolidatedundrained triaxial tests with grain size less than 5 mm and by large scale direct-shear tests with original grain content. Fine particles of the loose gravelly slopes are released under rainfalls, alternated the structures and mechanical properties, even affected the slope stability. There are a series of large scale direct-shear tests with different coarse grain contents to study the influence of fine particles releasing and migration, results showed the strength behavior of the gravelly soils were affected by the coarse grain content (P (5) ) and the inflection coarse grain contents. In order to study the erosion features of the gravelly soil slopes on rainfall conditions and the slopes stability alteration, we had carried out one sort of artificial rainfall local and model experiments, the runoff sediment contents were monitored during the experiments. Result showed that the shapes of the slopes surface transformed periodically, runoff sediment contents were divided into five phases according to the experiment phenomena, runoff sediment contents maintained downtrend during the rain time and the downtrend was obviously interpreted by one descend belt no matter the rainfall intensity and the slope angels. Particle size analysis released the deposit on the slope surface lost almost all of the clay, most of the silt and sand after the experiments, this meant the fine particles releasing, migration and accumulation process on condition of rainfall resulted in the instability factor of the slopes even induced landslide or debris flow. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000327459900007 |
| 公开日期 | 2013-11-26 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6528]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2013_Vol10 No.6 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.State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 3.Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu Ming-jian,Pan Hua-li,Wei Hou-zhen,et al. Landslides & debris flows formation from gravelly soil surface erosion and particle losses in Jiangjia Ravine[J]. JOURNAL OF MOUNTAIN SCIENCE,2013,10(6):987-995. |
| APA | Hu Ming-jian,Pan Hua-li,Wei Hou-zhen,Wang Ren,&A Ying.(2013).Landslides & debris flows formation from gravelly soil surface erosion and particle losses in Jiangjia Ravine.JOURNAL OF MOUNTAIN SCIENCE,10(6),987-995. |
| MLA | Hu Ming-jian,et al."Landslides & debris flows formation from gravelly soil surface erosion and particle losses in Jiangjia Ravine".JOURNAL OF MOUNTAIN SCIENCE 10.6(2013):987-995. |
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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