Modeling of an excavation-induced rock fracturing process from continuity to discontinuity
文献类型：期刊论文
| 作者 | Pan, Peng-Zhi; Yan, Fei; Feng, Xia-Ting ; Wu, Zhenhua; Qiu, Shili
|
| 刊名 | ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
 |
| 出版日期 | 2019 |
| 卷号 | 106期号:-页码:286-299 |
| 关键词 | Continuous-discontinuous cellular automaton Discontinuity Excavation Rock fracturing Plasticity |
| ISSN号 | 0955-7997 |
| DOI | 10.1016/j.enganabound.2019.05.014 |
| 英文摘要 | A convenient and efficient approach to simulate the excavation-induced rock fracturing process from continuity to discontinuity is proposed. The excavation boundary is considered to be an internal discontinuity, which is enriched by a Heaviside function. By using partition of unity concept and level set method, the cellular automaton updating rule for elasto-plastic fracturing induced by excavation is developed. The excavation induced rock mass strain localization is described by plasticity. A plastic strain-dependent criterion is proposed to link continuity and discontinuity, by which crack initiation and propagation of rock mass are described. By using the cellular automaton neighborhood information and level set method, the crack propagation path and excavation boundary can be tracked efficiently. The excavation and the induced crack initiation and propagation can be represented and simulated without explicit remeshing. This approach is implemented in a self-developed numerical model, i.e. a rock continuous-discontinuous cellular automaton (CDCA). The reliability and versatility of CDCA in the modeling of excavation-induced crack initiation, propagation, coalescence and block formation in rock mass are well demonstrated. The method helps estimate the onset of stable and unstable failure development, as well as the magnitude of plastic strain before cracking in rocks. |
| WOS研究方向 | Engineering ; Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000487168600026 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14896]  |
| 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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 3.Northeastern Univ, Key Lab Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Peng-Zhi,Yan, Fei,Feng, Xia-Ting,et al. Modeling of an excavation-induced rock fracturing process from continuity to discontinuity[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2019,106(-):286-299. |
| APA | Pan, Peng-Zhi,Yan, Fei,Feng, Xia-Ting,Wu, Zhenhua,&Qiu, Shili.(2019).Modeling of an excavation-induced rock fracturing process from continuity to discontinuity.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,106(-),286-299. |
| MLA | Pan, Peng-Zhi,et al."Modeling of an excavation-induced rock fracturing process from continuity to discontinuity".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 106.-(2019):286-299. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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