EVOLUTION OF SHEAR STRENGTH OF CLAYEY SOILS IN A LANDSLIDE DUETO ACID RAIN: A CASE STUDY IN THE AREA OF THREE GORGES, CHINA

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 > 成都山地所知识仓储（2009年以前）

	EVOLUTION OF SHEAR STRENGTH OF CLAYEY SOILS IN A LANDSLIDE DUETO ACID RAIN: A CASE STUDY IN THE AREA OF THREE GORGES, CHINA
	Yu Zhao; Peng Cui
	2007
会议名称	First North American Landslide Conference, Landslides and Society: Integrated Science, Engineering,Management, and Mitigation
会议日期	2007-06-03～08
会议地点	Vail, Colorado （美国）
关键词	soil strength
通讯作者	Yu Zhao
英文摘要	Possible effects on landslide inception by acid rain induced changes in soil strength are investigated. Soil samples from freshly exposed slip surfaces and their immediate vicinity have been investigated at two landslides in the region of the Three Gorges, China. A visibly higher smectite content at the slip-surface and a dominant content of illite in the immediate vicinity are observed. In laboratory, remolded soils were subjected to acid water bath and tested for changes in their mineralogical composition and in their shear strength after the bath of different duration. The largest changes occur in the internal friction angle, which drops over onethird, concomitant with alteration of the originally smectitic soil with a substantial illite component into completely smectite dominated soil. Subsequently the friction rises again, simultaneously with neoformation of kaolinite at the expense of the smectite component. Changes in cohesion are much less significant. The originally koalinite-rich and illite-rich samples were found to be much more stable. A chemo-mechanical model of clayey soils is discussed.
合作状况	国际
会议主办者	American Landslide Conference
会议录	First North American Landslide Conference, Landslides and Society: Integrated Science, Engineering,Management, and Mitigation
学科主题	灾害学
语种	英语
内容类型	会议论文
源URL	[http://192.168.143.20:8080/handle/131551/3632]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）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
推荐引用方式 GB/T 7714	Yu Zhao,Peng Cui. EVOLUTION OF SHEAR STRENGTH OF CLAYEY SOILS IN A LANDSLIDE DUETO ACID RAIN: A CASE STUDY IN THE AREA OF THREE GORGES, CHINA[C]. 见:First North American Landslide Conference, Landslides and Society: Integrated Science, Engineering,Management, and Mitigation. Vail, Colorado （美国）. 2007-06-03～08.