Influence of net mean stress on permeability coefficient of unsaturated remolded loess

doi:10.11779/CJGE2018S1009

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Influence of net mean stress on permeability coefficient of unsaturated remolded loess
	Gao, Deng-Hui 1; Chen, Zheng-Han 2,3; Xing, Yi-Chuan 1; Guo, Nan 2; Deng, Gang 1; Hu, Sheng-Xia 4
刊名	Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
	2018-05-01
卷号	40 页码:51-56
关键词	Geotechnical engineering Hydraulic conductivity Slope stability Soil moisture Indirect methods Matric suctions Net mean stress Rainfall infiltration Slope stability evaluation Soil-water characteristic curve Unsaturated remolded loess Van Genuchten model
ISSN号	10004548
DOI	10.11779/CJGE2018S1009
英文摘要	In order to study the influence of the net mean stress on the permeability coefficient of unsaturated remolded loess, an indirect method is used to predict the permeability coefficient through the generalized soil water characteristic curve which involves the effect of net mean stress on SWCC. To get the generalized soil water characteristic curve, four triaxial contraction tests are conducted for remolded loess samples by increasing matrix suction step by step and controlling the net mean stress as constant. Based on the measured generalized soil water characteristic curve, the Van Genuchten model for predicting the permeability coefficient of unsaturated soil is used. The permeability coefficient of every matrix suction under different net mean stresses is calculated. The results show that the permeability coefficient of unsaturated remolded loess decreases nonlinearly with the increase of the matrix suction in the semi-log coordinates. Under the same matrix suction, the smaller the net mean stress, the greater the permeability coefficient. The results may provide a useful basis for the deformation of high embankment and rainfall infiltration of slope stability evaluation in loess regions. © 2018, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
语种	中文
出版者	Chinese Society of Civil Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114914]
专题	土木工程学院
作者单位	1.Geotechnical Engineering Institute, China Institute of Water Resources and Hydropower Research, Beijing; 100048, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Department of Military Installation, Army Service University, Chongqing; 401311, China; 4.School of Architectural and Civil Engineering, Yan'an University, Yan'an; 716000, China
推荐引用方式 GB/T 7714	Gao, Deng-Hui,Chen, Zheng-Han,Xing, Yi-Chuan,et al. Influence of net mean stress on permeability coefficient of unsaturated remolded loess[J]. Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering,2018,40:51-56.
APA	Gao, Deng-Hui,Chen, Zheng-Han,Xing, Yi-Chuan,Guo, Nan,Deng, Gang,&Hu, Sheng-Xia.(2018).Influence of net mean stress on permeability coefficient of unsaturated remolded loess.Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering,40,51-56.
MLA	Gao, Deng-Hui,et al."Influence of net mean stress on permeability coefficient of unsaturated remolded loess".Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering 40(2018):51-56.