IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.2
Comparative study on debris flow initiation in limestone and sandstone spoil
Chen Ning-sheng1; Lu Yang1,2; Deng Ming-feng1; Han Da-wei3; Zhou Hai-bo1,2; Yang Cheng-lin1
Corresponding AuthorCHEN Ning-sheng
AbstractLarge spoil tips from reconstruction works as a result of the Wenchuan Earthquake in China are new debris flow hazards to the human society. However, there is a lack of detailed comparative study on debris flow initiation in different spoil materials. This paper describes a series of tests and analyses on debris flow characteristics (initiation, scale and mechanism) at six sites with limestone and sandstone materials near the Dujiangyan area. Research shows the limestone spoil contains debris flow prone clay content with high concentration of montmorillonite (highly expandable). In addition, limestone spoil is of such a low permeability that water mainly concentrates in the upper surface layer. Those factors make it easy for the increase of pore water pressure, decline of internal friction and conhesion force, leading to the occurence of large debris flows. In contrast, the sandstone spoil is less problematic and causes no major debris flow threats. Based on our research on the mechanism, the"stereometric drainage"method is sucessfully applied to control limestone spoil debris flows.
KeywordDebris Flows Comparative Study Reconstruction Spoil Initiation Mechanism Mitigation Measures
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS SubjectEnvironmental Sciences
WOS IDWOS:000317352800002
Funding OrganizationMinistry of Science and Technology of the People's Republic of China(2011BAK12B02) ; Science and Technology Department of Sichuan Province(2011SZ0190)
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.2
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Bristol, Bristol BS8 1TH, Avon, England
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Chen Ning-sheng,Lu Yang,Deng Ming-feng,et al. Comparative study on debris flow initiation in limestone and sandstone spoil[J]. JOURNAL OF MOUNTAIN SCIENCE,2013,10(2):190-198.
APA Chen Ning-sheng,Lu Yang,Deng Ming-feng,Han Da-wei,Zhou Hai-bo,&Yang Cheng-lin.(2013).Comparative study on debris flow initiation in limestone and sandstone spoil.JOURNAL OF MOUNTAIN SCIENCE,10(2),190-198.
MLA Chen Ning-sheng,et al."Comparative study on debris flow initiation in limestone and sandstone spoil".JOURNAL OF MOUNTAIN SCIENCE 10.2(2013):190-198.
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