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Dynamic simulation of rockslide-debris flow based on an elastic-plastic framework using the SPH method
Liang Heng1,3; He Siming1,2,3; Liu Wei1,3
2020
Source PublicationBULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
ISSN1435-9529
EISSN1435-9537
Volume79Issue:1Pages:451-465
SubtypeArticle
Contribution Rank1
AbstractTo simulate the motion process of a rockslide-debris flow that behaves like a solid in a small deformation regime and a fluid in an extremely large deformation regime, such as that of the Guanling rockslide in China on June 28, 2010, we proposed a dilatant rheology model that bridges this mechanical behavior of such flows, using the Guanling rockslide as an example. In our model, the adjustment of the material isotropic pressure when plastic deformation occurred was based on the plastic potential theory of solid mechanics, and the shear stress tensor was calculated based on the Drucker-Prager yield criterion and the strain-rate tensor. Furthermore, the Jaumann rate was adopted to maintain the stress frame consistent with the strain and rotation information. The boundary condition in our simulation was based on the dynamic boundary condition, and the boundary particles were described by the Bingham model rather than the proposed model, which differs from the usual treatment. Furthermore, the inverse distance weighting method was applied to evaluate the rockslide depth at different stages. Finally, a three-dimensional (3D) representation of the velocity, depth, kinetic energy, and density of the Guanling rockslide-debris flow was obtained using the dilatant rheology model, which revealed that surface mass fluidization lagged behind sliding plane mass fluidization in the studied flow. The simulation results indicate that, with respect to simulating the Guanling rockslide-debris flow, the proposed model employing 3D smoothed-particle hydrodynamics was superior to and more detailed than the incompressible fluid model using the depth-integrated method.
KeywordRockslide-debris flow Smoothed particle hydrodynamics Dilatancy Mechanics behavior transition
DOI10.1007/s10064-019-01537-8
Indexed BySCI ; EI
WOS KeywordSMOOTHED PARTICLE HYDRODYNAMICS ; DEPTH-INTEGRATED MODEL ; RUN-OUT ; LANDSLIDE ; LIQUEFACTION ; INITIATION
Language英语
Funding ProjectNational Natural Science Foundation of China[41790433] ; National Natural Science Foundation of China[41772312] ; NSFC-ICIMOD[41661144041] ; Key Research and Development Projects of Sichuan Province[2017SZ0041]
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000511500900030
Funding OrganizationNational Natural Science Foundation of China ; NSFC-ICIMOD ; Key Research and Development Projects of Sichuan Province
PublisherSPRINGER HEIDELBERG
EI Accession NumberAccession number:20192407038896
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33883
Collection山地灾害与地表过程重点实验室
Corresponding AuthorLiang Heng
Affiliation1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China;
2.University of Chinese Academy of Sciences, Beijing, China;
3.Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Chengdu, 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
Liang Heng,He Siming,Liu Wei. Dynamic simulation of rockslide-debris flow based on an elastic-plastic framework using the SPH method[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2020,79(1):451-465.
APA Liang Heng,He Siming,&Liu Wei.(2020).Dynamic simulation of rockslide-debris flow based on an elastic-plastic framework using the SPH method.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,79(1),451-465.
MLA Liang Heng,et al."Dynamic simulation of rockslide-debris flow based on an elastic-plastic framework using the SPH method".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 79.1(2020):451-465.
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