Discrete element modeling method for anisotropic mechanical behavior of biotite quartz schist based on mineral identification technology
文献类型：期刊论文
| 作者 | Bao, Han1; Rao, Zhicheng1; Lan, Hengxing2,3; Yan, Changgen1; Liu, Changqing1; Liu, Shijie3 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2025 |
| 卷号 | 84期号:1页码:21 |
| 关键词 | Anisotropy Mineral identification Schistosity Discrete element method (DEM) Brazilian splitting test |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-024-04025-w |
| 产权排序 | 2 |
| 英文摘要 | Accurately representing the rock structure is a fundamental requirement for ensuring the precision of discrete element simulations. A modeling method that uses mineral identification technology to reflect the actual arrangement of minerals was designed based on particle flow code (PFC). The method uses variations in mineral physical properties and applies gamut clustering analysis to identify, extract, and classify mineral regions. The discrete element model is then generated by importing mineral boundary location data into the PFC. This method was employed to simulate the directional arrangement of minerals in biotite quartz schist and to conduct Brazilian splitting simulation experiments under different schistosity angles. The results show that as the schistosity angle increased, the influence of schistosity on rock specimen tensile strength diminished, and the final fracture morphology of rock specimens transited from linear to bow-shaped and then back to linear. In the process of micro-fracturing in rock specimens, the number of shear cracks was governed by the schistosity angle, peaking at 22.5 degrees. The simulation results aligned with the laboratory tests regarding mechanical parameters, micro-fracturing processes, and the ultimate micro-fracturing morphology. This consistency highlights the effectiveness of this approach for analyzing rock anisotropy. Observing the displacement field of rock particles during rock failure revealed that with an increasing schistosity angle, the direction of particle displacement shifted from within the matrix plane to across the matrix plane, coinciding with increased particle displacement. From a microscopic viewpoint, this mechanism unveils how an increase in the schistosity angle diminishes the mechanical properties of the rock specimen. |
| WOS关键词 | STRENGTH ANISOTROPY ; ACOUSTIC-EMISSION ; TENSILE-STRENGTH ; BRAZILIAN TEST ; ROCK ; EVOLUTION ; FAILURE ; STRESS ; DEFORMATION ; SIMULATION |
| 资助项目 | National Natural Science Foundation of China[42177142] ; National Natural Science Foundation of China[41927806] ; National Natural Science Foundation of China[42041006] ; National Natural Science Foundation of China[2023-YBSF-486] ; Key Research and Development Program of Shaanxi |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001385154900003 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/211960]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Bao, Han |
| 作者单位 | 1.Changan Univ, Sch Highway, Xian 710064, Shaanxi, Peoples R China 2.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Minist Nat Resources, Key Lab Ecol Geol & Disaster Prevent, Xian 710054, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Han,Rao, Zhicheng,Lan, Hengxing,et al. Discrete element modeling method for anisotropic mechanical behavior of biotite quartz schist based on mineral identification technology[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2025,84(1):21. |
| APA | Bao, Han,Rao, Zhicheng,Lan, Hengxing,Yan, Changgen,Liu, Changqing,&Liu, Shijie.(2025).Discrete element modeling method for anisotropic mechanical behavior of biotite quartz schist based on mineral identification technology.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,84(1),21. |
| MLA | Bao, Han,et al."Discrete element modeling method for anisotropic mechanical behavior of biotite quartz schist based on mineral identification technology".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 84.1(2025):21. |
入库方式： OAI收割
来源：地理科学与资源研究所
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