| ANALYSIS OF THE CORRELATION BETWEEN FRACTAL DIMENSION OF GRAVELLY SOIL AND DEBRIS-FLOW INITIATION THROUGH IN-SITU EXPERIMENTS | |
Zhong, W.1,2 ; He, N.3; Cosgrove, T.4; Zhu, Y. J.3; Fu, L.3
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| Corresponding Author | He, N.(hn61886@163.com) |
| 2019 | |
| Source Publication | APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
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| ISSN | 1589-1623 |
| Volume | 17Issue:4Pages:7573-7589 |
| Abstract | Particle size distribution of the gravelly soil in debris flow source area has a great impact on the formation mechanism of debris-flow. In order to explore the relationship between particle composition and debris flow initiation, we collected 182 soil samples from debris flow source areas. Sieving tests have been conducted in the laboratory to acquire the fundamental particle size distribution data. Subsequently, the fractal theory was employed to compute the fractal dimension of each soil sample, analyzing the results of calculation we found that the gravelly soil in debris flow source area is mainly concentrated in one fractal dimension, the value of which ranges from about 2.250 to 2.798. Comparing the results of calculation and sieving experimentation, the underlying relationship between particle composition and fractal dimension can be revealed: the particle compositions of the gravelly soil tend to remain uniform as the fractal dimension increases. On the basis of the calculation results, the in-situ artificial rainfall experiments can be designed and performed. Analyzing the phenomenon during the processes of the experiments, the initiation mechanism with different fractal dimensions can be preliminarily identified: The gravelly soil which can mobilise into debris flows exhibits significant criticality feature, and the gravelly soil with fractal dimension ranges from 2.4 to 2.6 are more susceptible to mobilise into debris flow, and the scale of the debris flow is relatively larger. For slopes with fractal dimension < 2.4, the possibility of mobilisation into debris flow is extremely low. When fractal dimension ranges from about 2.6 to 2.7, the density of the formed debris flow is relatively lower, under which the formation of debris flows exhibits significant intermittent characteristics. |
| Keyword | debris flow fractal theory particle size distribution initiation mechanism in-situ experiments disaster mitigation |
| DOI | 10.15666/aeer/1704_75737589 |
| Indexed By | SCI |
| WOS Keyword | RAINFALL THRESHOLDS ; MODEL ; SIZE ; RUNOFF ; LANDSLIDE ; CLASSIFICATION ; MAGNITUDE ; DELIVERY ; SLOPE ; BASIN |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2018YFC1505205] ; National Natural Science Foundation of China[41302284] ; National Natural Science Foundation of China[41661144028] ; Henan Polytechnic University[B2015-58] ; Henan Postdoctoral Foundation[19030069] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Ecology ; Environmental Sciences |
| WOS ID | WOS:000478066700026 |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Henan Polytechnic University ; Henan Postdoctoral Foundation |
| Publisher | CORVINUS UNIV BUDAPEST |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/26781 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | He, N. |
| Affiliation | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China 3.Henan Polytech Univ, Sch Civil Engn, Jiaozuo 454003, Henan, Peoples R China 4.Univ Limerick, Dept Civil Engn & Mat Sci, Limerick, Ireland |
| First 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 | Zhong, W.,He, N.,Cosgrove, T.,et al. ANALYSIS OF THE CORRELATION BETWEEN FRACTAL DIMENSION OF GRAVELLY SOIL AND DEBRIS-FLOW INITIATION THROUGH IN-SITU EXPERIMENTS[J]. APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,2019,17(4):7573-7589. |
| APA | Zhong, W.,He, N.,Cosgrove, T.,Zhu, Y. J.,&Fu, L..(2019).ANALYSIS OF THE CORRELATION BETWEEN FRACTAL DIMENSION OF GRAVELLY SOIL AND DEBRIS-FLOW INITIATION THROUGH IN-SITU EXPERIMENTS.APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,17(4),7573-7589. |
| MLA | Zhong, W.,et al."ANALYSIS OF THE CORRELATION BETWEEN FRACTAL DIMENSION OF GRAVELLY SOIL AND DEBRIS-FLOW INITIATION THROUGH IN-SITU EXPERIMENTS".APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 17.4(2019):7573-7589. |
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| 1704_75737589.pdf（1136KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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