An empirical mode decomposition-based signal process method for two-phase debris flow impact

doi:10.1007/s10346-017-0864-1

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

	An empirical mode decomposition-based signal process method for two-phase debris flow impact
	Lei, Yu1 ; Cui, Peng1 ; Zeng, Chao 2; Guo, Yayong 1
刊名	LANDSLIDES
	2018-02-01
卷号	15 期号:2 页码:297-307
关键词	Debris flow Flume test Slurry impact Particle impact Signal process
ISSN号	1612-510X
DOI	10.1007/s10346-017-0864-1
英文摘要	Impact of debris flow consists of two distinctive phases due to its physical composition. One is the dynamic impact from fluid phase, and the other is collision from the solid phase. At present, there is no effective way to differentiate these two phases of impact. An empirical mode decomposition (EMD)-based signal process method was proposed in this paper to extract fluid and solid impact force of debris flow from the mixed signal. Miniaturized flume tests have been carried out with 14 work conditions, and the impact signals were captured by a digital logger. From the experiment, frequencies of fluid phase and solid phase impact signals were identified in the range of 0.05-2 Hz and 300-600 Hz, respectively. The impact signals from solid and liquid phases were reconstructed using the proposed method. In addition, the impact force of fluid phase that measured directly from the flume tests and calculated from isolated signals showed good agreement and the average difference was about 10%. However, large deviation of solid phase impact was observed especially when this method was applied to the full-scale debris flow events and the difference ranged from 26.33 to 61.47%. This proposed method provided an alternative approach to study the debris flow impact force in terms of slurry and large particles separately.
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000423999700009
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/20881]
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
通讯作者	Cui, Peng
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Sichuan Engn Res Ctr Emergency Mapping & Disaster, Sichuan Geomat Ctr, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Lei, Yu,Cui, Peng,Zeng, Chao,et al. An empirical mode decomposition-based signal process method for two-phase debris flow impact[J]. LANDSLIDES,2018,15(2):297-307.
APA	Lei, Yu,Cui, Peng,Zeng, Chao,&Guo, Yayong.(2018).An empirical mode decomposition-based signal process method for two-phase debris flow impact.LANDSLIDES,15(2),297-307.
MLA	Lei, Yu,et al."An empirical mode decomposition-based signal process method for two-phase debris flow impact".LANDSLIDES 15.2(2018):297-307.