Strength behavior of the gravelly soils and influence on landslides & debris flows in Jiangjia Ravine
文献类型：期刊论文
| 作者 | Hu, Mingjian1,2; Wang, Ren1,2; Wei, Houzhen1,2; Ying, A.1,2; Chen, Yongjun3 |
| 刊名 | DISASTER ADVANCES
 |
| 出版日期 | 2013 |
| 卷号 | 6页码:116-125 |
| 关键词 | Gravelly soils Strength behavior Moisture content Coarse grain content Fine particle losses |
| ISSN号 | 0974-262X |
| 英文摘要 | JiangJia Ravine is a typical rainstorm debris flow valley in southwest mountain area of China, more than 200 gullies and massive gravelly deposits spread over there. The gravelly soils are made up of gravel, cobble, sand and cohesive clay, usually have the character of non-uniform distribute grade, high porosity, penetration and dispersity. Their strength are easily affected by grain content and moisture content. The fine particles of the loosely gravel soils will be released and migrated by seepage and rainfall erosion, then change their structures and mechanical properties, even trigger the gravel soil slopes collapses and landslides. In order to study the strength behavior of the, gravelly soils and the influence of particle contents and moisture contents, indoors direct shear tests with different particle contents and moisture contents had been done, and then done series of artificial rainfall surface erosion local and model experiments to learn the influence of fine particle lose and moisture. content raise on landslides and debris flows through rainfall intensity and runoff sediment contents monitoring. Results showed that the strength of the gravelly soils were affected by the moisture content and coarse grain content, the higher was the moisture content, the lower was the strength; the higher was the coarse grain content, the lower was the bite force and the higher was the friction angle. The shapes of the slope surface transformed periodically during the rainfall erosion, sediment contents of the runoff maintained downtrend and represented five sections, the downtrend was obviously interpreted by one descend belt no matter the rainfall intensity and the slope angel. Contrast to the original grain size, the runoff sediment included almost all of the clay, most of the silt and lot of the sand, which implied the fine particles releasing and migration, the change provided the instability factor of slope, even induced the landslide or debris flow on condition of rainfall. |
| WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000325056000014 |
| 出版者 | DISASTER ADVANCES |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3508]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.State Key Lab Geomech & Geotech Engn ; 2.Chinese Acad Sci, Inst Rock & Soil Mech ; 3.China Nucl Ind 22nd Construct Co Ltd |
| 推荐引用方式 GB/T 7714 | Hu, Mingjian,Wang, Ren,Wei, Houzhen,et al. Strength behavior of the gravelly soils and influence on landslides & debris flows in Jiangjia Ravine[J]. DISASTER ADVANCES,2013,6:116-125. |
| APA | Hu, Mingjian,Wang, Ren,Wei, Houzhen,Ying, A.,&Chen, Yongjun.(2013).Strength behavior of the gravelly soils and influence on landslides & debris flows in Jiangjia Ravine.DISASTER ADVANCES,6,116-125. |
| MLA | Hu, Mingjian,et al."Strength behavior of the gravelly soils and influence on landslides & debris flows in Jiangjia Ravine".DISASTER ADVANCES 6(2013):116-125. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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