Comparative study on debris flow initiation in limestone and sandstone spoil

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 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 Yang 1,2; Deng Ming-feng1 ; Han Da-wei 3; Zhou Hai-bo 1,2; Yang Cheng-lin1
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2013-04-01
卷号	10 期号:2 页码:190-198
关键词	Debris flows Comparative study Reconstruction spoil Initiation mechanism Mitigation measures
ISSN号	1672-6316
通讯作者	CHEN Ning-sheng
英文摘要	Large 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.
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]	MECHANISM ; BEHAVIOR
收录类别	SCI
语种	英语
WOS记录号	WOS:000317352800002
公开日期	2013-04-26
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/5207]
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.2 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 & 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
推荐引用方式 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.