Damage and deformation control equation for gas-bearing coal and its numerical calculation method
文献类型：期刊论文
| 作者 | Hu, Shaobin1; Wang, Enyuan2; Kong, Xiangguo2 |
| 刊名 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2015 |
| 卷号 | 25页码:166-179 |
| 关键词 | Gas-bearing coal Porous materials Damage evolution Numerical calculation |
| ISSN号 | 1875-5100 |
| DOI | 10.1016/j.jngse.2015.04.039 |
| 英文摘要 | The dual pore structure of coal and occurrence of gas adsorption make gas-bearing coal mechanical properties different from other non-adsorptive porous materials. Considering adsorbed-gas-induced swelling stress and erosion, and pore/fracture-induced damage and failure to coal skeleton, the new effective stress equation, damage deformation control equation and constitutive model for gas-bearing coal is established. Based on principle of statistics and fractal theory, we combined the macro- and micro-structure characteristics of coal, and established the control equation of fracture field distribution. According to fracture mechanics and mesoscopic damage mechanics, we also established the expansion and damage evolution control equation of mesoscopic cracks. Furthermore, we revealed the relationship between meso-scale crack extension damage and macro mechanical characteristics, set up the macromesoscopic numerical model and calculation method of fractured rock mechanic constitutive, and developed the stress strain numerical calculation program of gas-bearing coal using Comsol Multiphysics partial differential equation module and MatLab software. The model and methods were further validated in field tests. The results showed that our equations could better describe the deformation and damage process of gas-bearing coal and solve the fluid solid coupling problems in gas and coal engineering practices. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000357551100020 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3738]  |
| 专题 | 岩土力学所知识全产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech ; 2.China Univ Min & Technol, Sch Safely Engn |
| 推荐引用方式 GB/T 7714 | Hu, Shaobin,Wang, Enyuan,Kong, Xiangguo. Damage and deformation control equation for gas-bearing coal and its numerical calculation method[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2015,25:166-179. |
| APA | Hu, Shaobin,Wang, Enyuan,&Kong, Xiangguo.(2015).Damage and deformation control equation for gas-bearing coal and its numerical calculation method.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,25,166-179. |
| MLA | Hu, Shaobin,et al."Damage and deformation control equation for gas-bearing coal and its numerical calculation method".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 25(2015):166-179. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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