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Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis

文献类型：期刊论文

作者Bi, YuZhang1; He, SiMing2,3,4; Du, YanJun1; Sun, XinPo5; Li, XinPo2,4
刊名BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
出版日期2019-06-01
卷号78期号:4页码:2267-2282
关键词Rock avalanches Baffles Interaction mechanisms Zhangmu Energy dissipation
ISSN号1435-9529
DOI10.1007/s10064-018-1284-8
通讯作者Bi, YuZhang(biyuzhang@seu.edu.cn)
英文摘要Rock avalanches with a high mobility and kinetic energy pose a potential geological risk to surrounding buildings. Baffles and avalanche walls are effective ways to protect these buildings. However, the primary focus of previous studies has been on baffles or avalanche walls alone, and there have been very few studies investigating the effectiveness of a combination of baffles and avalanche walls as a countermeasure against rock avalanches. In addition, previous studies on lab-scale tests and numerical analyses often did not take the actual topography effects into consideration. In this study we adopted a numerical simulation approach based on an actual project in the town of Zhangmu, Tibet, with the aim to investigate the effect of different configurations of a combined baffle-avalanche wall system on impeding the kinetic energy of rock avalanches. A series of numerical analyses with discrete element methods (DEM) were conducted. First, the effect of three different pile groups on the reduction of the effect of the rock avalanche was studied using the numerical modeling study. Secondly, the influence of the size of the retaining wall on the maximum impact force of the rock avalanche was studied. Finally, a DEM modeling study on the energy dissipation capacity of the baffle-avalanche wall system was conducted. The results demonstrate that an arrangement of different baffle-avalanche wall systems will produce different results in terms of dissipating the energy of rock avalanches: when the wall is long enough to block all rock masses, enhancing baffle density will decrease the maximum impact force exerted on the avalanche wall; however, if the wall is just long enough to protect the target region, reducing baffle density will decrease the maximum impact force exerted on the avalanche wall. The results of this study are significant in terms of providing guidelines for the design of baffle-avalanche wall systems for protection against rock avalanches.
WOS关键词DYNAMIC SIMULATION ; IMPACT ; VALLEY ; RUNOUT ; MOTION ; ALPS
资助项目Project of National Science Foundation of China[41472325] ; Project of National Science Foundation of China[41472293] ; Project of National Science Foundation of China[91430105] ; Sichuan Science and Technology Support Program[2016SZ0067]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000468075000008
出版者SPRINGER HEIDELBERG
资助机构Project of National Science Foundation of China ; Sichuan Science and Technology Support Program
源URL[http://ir.imde.ac.cn/handle/131551/26226]  
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Bi, YuZhang
作者单位1.Southeast Univ, Inst Geotech Engn, Sch Transportat, 2 Sipalou Rd, Nanjing 210096, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Chinese Acad Sci, IMHE, Chengdu 610041, Sichuan, Peoples R China
5.Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621000, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Bi, YuZhang,He, SiMing,Du, YanJun,et al. Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2019,78(4):2267-2282.
APA Bi, YuZhang,He, SiMing,Du, YanJun,Sun, XinPo,&Li, XinPo.(2019).Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,78(4),2267-2282.
MLA Bi, YuZhang,et al."Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 78.4(2019):2267-2282.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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