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An empirical mode decomposition-based signal process method for two-phase debris flow impact
Lei, Yu1; Cui, Peng1; Zeng, Chao2; Guo, Yayong1
2018
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume15Issue:2Pages:297-307
SubtypeArticle
AbstractImpact 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.
KeywordDebris flow Flume test Slurry impact Particle impact Signal process
DOI10.1007/s10346-017-0864-1
Indexed BySCI
WOS KeywordTAIWAN
Language英语
Quartile2区
Funding ProjectMajor International (Regional) Joint Research Project from the National Natural Science Foundation of China[41520104002] ; National Key Technology Support Program[2014BAL05B01] ; Sichuan Technology Support Program[2014SZ0163]
TOP
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000423999700009
Funding OrganizationMajor International (Regional) Joint Research Project from the National Natural Science Foundation of China ; National Key Technology Support Program ; Sichuan Technology Support Program
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20881
Collection山地灾害与地表过程重点实验室
Corresponding AuthorCui, Peng
Affiliation1.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
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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.
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