Comparison of rheometric devices for measuring the rheological parameters of debris flow slurry

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-2015 > Vol12 No.5

	Comparison of rheometric devices for measuring the rheological parameters of debris flow slurry
	Yang Hong-juan1 ; Wei Fang-qiang2 ; Hu Kai-heng2 ; Zhou Gong-dan2 ; Lyu Juan 2
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2015-09-01
卷号	12 期号:5 页码:1125-1134
关键词	Debris flow Slurry Rheometer Concentric cylinder system Parallel plate system Vane Ball measuring system
ISSN号	1672-6316
通讯作者	WEI Fang-qiang
英文摘要	Soil samples with clay content ranging from 15% to 31%, were taken from three debris flow gullies in Southwest China. Three debris flow slurry samples were prepared and tested with four measuring systems of an Anton Paar Physica MCR301 rheometer, including the concentric cylinder system, the parallel-plate system, the vane geometry, and the ball measuring system. All systems were smoothwalled. Flow curves were plotted and yield stress was determined using the Herschel-Bulkley model, showing differences among the different systems. Flow curves from the concentric cylinder and parallelplate systems involved two distinct regions, the low shear and the high shear regions. Yield stresses determined by data fitting in the low shear region were significantly lower than the values from the inclined channel test which is a practical method for determining yield stress. Flow curves in the high shear region are close to those from the vane geometry and the ball measuring system. The fitted values of yield stress are comparable to the values from the inclined channel test. The differences are caused by wall-slip effects in the low shear region. Vane geometry can capture the stress overshoot phenomenon caused by the destruction of slurry structure, whereas end effects should be considered in the determination of yield stress. The ball measuring system can give reasonable results, and it is applicable for rheological testing of debris flow slurries.
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]	YIELD-STRESS ; PARTICLE SUSPENSIONS ; INVERSE PROBLEM ; VISCOMETERS
收录类别	SCI
语种	英语
WOS记录号	WOS:000362582200006
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/10882]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.5 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 & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Yang Hong-juan,Wei Fang-qiang,Hu Kai-heng,et al. Comparison of rheometric devices for measuring the rheological parameters of debris flow slurry[J]. JOURNAL OF MOUNTAIN SCIENCE,2015,12(5):1125-1134.
APA	Yang Hong-juan,Wei Fang-qiang,Hu Kai-heng,Zhou Gong-dan,&Lyu Juan.(2015).Comparison of rheometric devices for measuring the rheological parameters of debris flow slurry.JOURNAL OF MOUNTAIN SCIENCE,12(5),1125-1134.
MLA	Yang Hong-juan,et al."Comparison of rheometric devices for measuring the rheological parameters of debris flow slurry".JOURNAL OF MOUNTAIN SCIENCE 12.5(2015):1125-1134.