Theoretical and numerical study on the block-flexure toppling failure of rock slopes
文献类型：期刊论文
| 作者 | Zheng, Yun; Chen, Congxin; Liu, Tingting; Zhang, Haina; Sun, Chaoyi |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 263页码:- |
| ISSN号 | 0013-7952 |
| 关键词 | Rock slopes Block-flexure toppling Limit equilibrium method Numerical simulation Strength reduction method |
| DOI | 10.1016/j.enggeo.2019.105309 |
| 英文摘要 | Block-flexure toppling failure is frequently encountered in rock slopes. In this paper, we first proposed two theoretical models to calculate the factor of safety against block-flexure toppling, namely, step by step analysis model (LEM-SSAM) and overall analysis model (LEM-OAM). Then, we developed two special MATLAB codes for a quick stability estimation based on the proposed methods, respectively. Next, the universal distinct element code (UDEC) was used to study the failure mechanisms of block-flexure toppling. In order to realistically simulate the excavation of slope and obtain the detailed damage information of joints, we developed two FISH functions in UDEC. Finally, we conducted a comparative analysis of the limit equilibrium method and the numerical simulations through twelve theoretical models. The results show that many aspects of block-flexure toppling failure have been captured using UDEC combined with the developed FISH functions. The LEM-OAM and UDEC agree well while a larger factor of safety is obtained using the LEM-SSAM. It is found that the dip angles and friction angles of the joints dipping steeply into face have a great influence on block-flexure toppling failure while the influence of the cross joint spacing is less significant. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000501407600004 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14791]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Wuhan Univ Technol, Key Lab Roadway Bridge & Struct Engn, Wuhan 430070, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Yun,Chen, Congxin,Liu, Tingting,et al. Theoretical and numerical study on the block-flexure toppling failure of rock slopes[J]. ENGINEERING GEOLOGY,2019,263:-. |
| APA | Zheng, Yun,Chen, Congxin,Liu, Tingting,Zhang, Haina,&Sun, Chaoyi.(2019).Theoretical and numerical study on the block-flexure toppling failure of rock slopes.ENGINEERING GEOLOGY,263,-. |
| MLA | Zheng, Yun,et al."Theoretical and numerical study on the block-flexure toppling failure of rock slopes".ENGINEERING GEOLOGY 263(2019):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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