Erodibility of soil at the gully head in Yuanmou dry-hot valley, China

doi:10.1117/12.887704

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 > 山地灾害与地表过程重点实验室

	Erodibility of soil at the gully head in Yuanmou dry-hot valley, China
	Nan, Ling 1,3; Chena, An-Qiang 1,3; Liu, Gang-Cai1,2
	2011
会议日期	2010-12
会议地点	Qingdao
关键词	gully erodibility slaking shearstrength
卷号	7752
DOI	10.1117/12.887704
页码	77520Y
国家	China
英文摘要	In the recent years, gully erosion attracted increasing attention from scientists. However, there were few studies on the soil erodibility/anti- erodibilty for the gully erosion. Based on the principle ofgeotechnical slaking test, a new set of test apparatus had been designed and applied on the study oferodibility of soil at the gully head. In this experiment, 6 typical gully heads had been chosen. Soil at thedifferent depth of each gully head had been sampled by the foil sampler and tested the slaking rate ofthem. Moreover, shear strength of soil at different depth of each gully head had been tested in situ. Theresults showed that gullies developed on the stratified soil or homogeneous soil have different morphological characteristics. At the sharp gully head, the erodibility of underlying soil was lower thanthe overlying soil's. Contrarily, at gradual gully head, the erodibility of underlying soil was not lower thanthe overlying soil's. Moreover, slaking rate of most gullies' soil in the study area is an inverse proportion tothe shear stress. Thus, slaking rate and in-situ shear stress, any of them can be the indicator of theerodibility of soil in the study region. But shear stress is easier to measure in situ.
源文献作者	SPIE
产权排序	1
会议录	Proceedings of SPIE - The International Society for Optical Engineering
语种	英语
ISSN号	0277786X
ISBN号	9780819482457
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/25940]
专题	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.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; 2.Key Laboratory of Mountain Hazards and Earth Surface Process, Chinese Academy of Sciences, Chengdu, China; 3.Graduate University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Nan, Ling,Chena, An-Qiang,Liu, Gang-Cai. Erodibility of soil at the gully head in Yuanmou dry-hot valley, China[C]. 见:. Qingdao. 2010-12.