UDEC Modelling on Dynamic Response of Rock Masses with Joint Stiffness Weakening Attributed to Particle Crushing of Granular Fillings
文献类型：期刊论文
| 作者 | Du, Jiahu1; Huang, Xiaolin2,3; Yang, Guoxiang1; Xue, Lei3; Wu, Bangbiao4; Zang, Mingdong1; Zhang, Xiaohui3 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2022-12-15 |
| 页码 | 19 |
| 关键词 | Rock mass Dynamic response Filled joint Particle crushing Stiffness weakening UDEC modelling |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-022-03181-3 |
| 英文摘要 | Characterization on the response of the jointed rock mass to the stress wave is of great significance for rock engineering and the prevention of dynamic geological disasters. A joint in the rock mass produces discontinuous deformation under dynamic loads and can be weakened on both stiffness and strength, which further affect stress wave propagation in a feedback manner. However, previous numerical models mainly used the linearly elastic model (LEM) (constant stiffness) and the nonlinear Bandis-Barton model (BBM) (compression-strengthening stiffness) to characterize the dynamic response of the rock mass which neglected dynamic damage and stiffness weakening of the joint. To overcome this problem, we adopted a modified BBM (MBBM) to establish an advanced numerical model of the dynamic response of the rock mass by the Universal Distinct Element Code (UDEC). The MBBM is capable of characterizing joint stiffness weakening attributed to the filled particle crushing, which can be also degraded into both LEM and BBM. Our model was well verified by experimental data on stress wave propagation through an artificial filled joint. Dynamic responses of rock masses containing a single joint, a set of parallel joints, and intersected joints were systematically investigated considering the amplitude and incident angle of the incident wave as well as the joint spacing. Results showed that weakening of the joint stiffness had an important impact on the wave transmission and effect of multiple reflections at joints. Compared with previous models, our model has prominent advantages and accuracy in simulating dynamic damage and weakening response of the rock mass. |
| WOS关键词 | STRESS WAVE-PROPAGATION ; PARALLEL FRACTURES ; SEISMIC RESPONSE ; TRANSMISSION ; SINGLE ; ATTENUATION ; BEHAVIOR ; STRENGTH ; SET |
| 资助项目 | National Key Research and Development Plan of China ; [2019YFC1509701] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000898064000001 |
| 出版者 | SPRINGER WIEN |
| 资助机构 | National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106972]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Huang, Xiaolin; Yang, Guoxiang |
| 作者单位 | 1.China Univ Geosci, Sch Engn & Technol, Xueyuan Rd 29, Beijing 100083, Peoples R China 2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Civil Engn, Xianning West Rd 28, Xian 710049, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Geol Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 4.Tianjin Univ, Sch Civil Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Jiahu,Huang, Xiaolin,Yang, Guoxiang,et al. UDEC Modelling on Dynamic Response of Rock Masses with Joint Stiffness Weakening Attributed to Particle Crushing of Granular Fillings[J]. ROCK MECHANICS AND ROCK ENGINEERING,2022:19. |
| APA | Du, Jiahu.,Huang, Xiaolin.,Yang, Guoxiang.,Xue, Lei.,Wu, Bangbiao.,...&Zhang, Xiaohui.(2022).UDEC Modelling on Dynamic Response of Rock Masses with Joint Stiffness Weakening Attributed to Particle Crushing of Granular Fillings.ROCK MECHANICS AND ROCK ENGINEERING,19. |
| MLA | Du, Jiahu,et al."UDEC Modelling on Dynamic Response of Rock Masses with Joint Stiffness Weakening Attributed to Particle Crushing of Granular Fillings".ROCK MECHANICS AND ROCK ENGINEERING (2022):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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