| A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit |
| Li Z; Wang JA; Li L; Wang LX(王理想) ; Liang RY; Liang, RY (reprint author), Univ Akron, Dept Civil Engn, Akron, OH 44325 USA.
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| 发表期刊 | ENGINEERING GEOLOGY
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| 2015-10-30
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| 卷号 | 197页码:20-32 |
| ISSN | 0013-7952
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| 摘要 | Toppling failure of rock slopes is a complicated mode due to a combination of both continuous and discontinuous deformation, especially in dealing with anti-dip rock slopes. In this paper, a novel continuum-based discrete element method (CDEM), which is useful in modeling the entire progressive process from continuous to discontinuous deformation, is proposed to analyze the deformation characteristics, the failure mechanism and the evolution process of a large-scale open pit slope with a typical anti-dip structure. To simulate the slope deformation, the shear strength reduction method (SSR) is adopted to represent the strength degradation of rock mass in the deterioration process. The simulated results are validated using data obtained from a field investigation and continuous monitoring by employing an advanced remote sensing technique called ground-based interferometric synthetic aperture radar (GB-InSAR). To analyze the evolution trend of the anti-dip slope, the subsequent toppling failure mode is predicted using the validated CDEM models. Based on a case study of a slope at the Fushun open pit mine (in Fushun, China), the unique geological structure with various joints and discontinuities, ground-water, intense rainfall, and mining activities are identified as the main triggers for different failure stages. The comparison between the field data and the simulation shows that CDEM accurately depicts the rock deformation and the failure pattern of the studied slope. The proposed numerical modeling techniques can be used for predicting failures of other similar excavated rock slopes. The simulated evolution process and the recorded deformation patterns help engineers to gain a better understanding of rock mass movement of anti-dip slopes, and the presented methodology could be utilized for similar studies and engineering designs. (C) 2015 Elsevier B.V. All rights reserved. |
| 关键词 | Flexural Toppling
Anti-dip Slope
Numerical Modeling
Cdem
Gb-insar
Monitoring
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| DOI | 10.1016/j.enggeo.2015.08.012
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000364252100003
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| 关键词[WOS] | DISCRETE ELEMENT METHOD
; FOLIATED ROCK SLOPES
; STABILITY
; STABILIZATION
; LANDSLIDE
; MODEL
; DEFORMATION
; AREAS
; CHINA
; SPAIN
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| WOS研究方向 | Engineering
; Geology
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| WOS类目 | Engineering, Geological
; Geosciences, Multidisciplinary
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| 项目资助者 | The generous support of the National Basic Research Program of China (973 Program, 2010CB731501), National Natural Science Foundation of China (No. 41172264) and University of Science and Technology Beijing, P.R China, is gratefully acknowledged. Computer hardware and software, GDEM, were provided by Institute of Mechanics, Chinese Academy of Sciences. And Fushun Mining Group Co., Ltd. Xilutian Open Mine provided valuable field data and allows data to be used in the study.
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| 课题组名称 | LMFS工程地质体力学(LEM)
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| 论文分区 | 二类/Q1
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/58387
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| 专题 | 流固耦合系统力学重点实验室
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| 通讯作者 | Liang, RY (reprint author), Univ Akron, Dept Civil Engn, Akron, OH 44325 USA. |
推荐引用方式
GB/T 7714 |
Li Z,Wang JA,Li L,et al. A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit[J]. ENGINEERING GEOLOGY,2015,197:20-32.
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| APA |
Li Z,Wang JA,Li L,王理想,Liang RY,&Liang, RY .(2015).A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit.ENGINEERING GEOLOGY,197,20-32.
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| MLA |
Li Z,et al."A case study integrating numerical simulation and GB-InSAR monitoring to analyze flexural toppling of an anti-dip slope in Fushun open pit".ENGINEERING GEOLOGY 197(2015):20-32.
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