IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.6
Landslides & debris flows formation from gravelly soil surface erosion and particle losses in Jiangjia Ravine
Hu Ming-jian1,2; Pan Hua-li3,4; Wei Hou-zhen1,2; Wang Ren1,2; A Ying1,2
Corresponding AuthorPAN Hua-li
2013
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume10Issue:6Pages:987-995
SubtypeArticle
AbstractGravelly 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.
KeywordGravelly Soils Erosion Process Particle Losses Runoff Sediment Content Jiangjia Ravine
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-012-2526-z
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000327459900007
Funding OrganizationNational Natural Science Foundation of China(41172283 ; National Basic Research Program of China(2012CB026103) ; 41372313)
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6528
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.6
山地灾害与地表过程重点实验室
Affiliation1.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
Recommended Citation
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.
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