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Improved Modeling of Subaerial and Subaqueous Muddy Debris Flows

文献类型：期刊论文

作者Qian, Xuesheng4,5; Xu, Jingping5; Das, Himangshu S.3; Wang, Dawei2; Bai, Yong1
刊名JOURNAL OF HYDRAULIC ENGINEERING
出版日期2020-07-01
卷号146期号:7页码:10
关键词Subaerial Subaqueous Muddy debris flow Fluid resistances Critical depth Earth pressure gradient
ISSN号0733-9429
DOI10.1061/(ASCE)HY.1943-7900.0001771
英文摘要In this note, a two-dimensional depth-averaged numerical model (MassFlow2D) previously developed to simulate subaerial and subaqueous muddy debris flows is further improved. The retarding effects of ambient fluid, including shear resistance, dynamic pressure, and added mass, on debris-flow movement is considered. The critical depth is reformulated by considering the role of the earth pressure gradient of debris flow. The improved model is then validated against laboratory-measured datasets from two flume experiments and a slump test. The numerical results agree well with the laboratory datasets. Afterward, the robustness of the model is demonstrated by a schematized large-scale submarine landslide. The improved model is also applied to a more realistic field scenario with real bathymetry originating from the Northern South China Sea where historical submarine landslides occurred. The results show that resistances from ambient water have significant implications on the dynamics of failed sediments. It is observed that the earth pressure gradient of debris flow plays a major role in the stage of creep deformation.
资助项目Funds for International Cooperation and Exchange[41720104001] ; State Key Program of the National Natural Science Foundation of China (NSFC)[41530966] ; Shenzhen Engineering Laboratory of Oil & Gas Drilling Equipment and Submarine Pipeline & Cable at Southern University of Science and Technology (SUSTech), China ; SUSTech
WOS研究方向Engineering ; Water Resources
语种英语
WOS记录号WOS:000536104300002
出版者ASCE-AMER SOC CIVIL ENGINEERS
资助机构Funds for International Cooperation and Exchange ; State Key Program of the National Natural Science Foundation of China (NSFC) ; Shenzhen Engineering Laboratory of Oil & Gas Drilling Equipment and Submarine Pipeline & Cable at Southern University of Science and Technology (SUSTech), China ; SUSTech
源URL[http://ir.idsse.ac.cn/handle/183446/7660]  
专题深海科学研究部_深海地球物理与资源研究室
通讯作者Qian, Xuesheng
作者单位1.Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou 310058, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Hainan, Peoples R China
3.US Army Corps Engn, Engn & Construct Div, Galveston, TX 77550 USA
4.Southeast Univ, Sch Civil Engn, Nanjing 211189, Jiangsu, Peoples R China
5.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Qian, Xuesheng,Xu, Jingping,Das, Himangshu S.,et al. Improved Modeling of Subaerial and Subaqueous Muddy Debris Flows[J]. JOURNAL OF HYDRAULIC ENGINEERING,2020,146(7):10.
APA Qian, Xuesheng,Xu, Jingping,Das, Himangshu S.,Wang, Dawei,&Bai, Yong.(2020).Improved Modeling of Subaerial and Subaqueous Muddy Debris Flows.JOURNAL OF HYDRAULIC ENGINEERING,146(7),10.
MLA Qian, Xuesheng,et al."Improved Modeling of Subaerial and Subaqueous Muddy Debris Flows".JOURNAL OF HYDRAULIC ENGINEERING 146.7(2020):10.

入库方式： OAI收割

来源：深海科学与工程研究所

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