Experimental study on the failure characteristic and mechanism of granite time-delayed rockburst under true triaxial condition
文献类型：期刊论文
| 作者 | Feng, Guang-liang2,4,5; Ma, Qi3,4; Lacidogna, Giuseppe1; Pan, Peng-zhi4; Wang, Zhao-feng4; Su, Guo-shao5 |
| 刊名 | GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 9期号:1页码:21 |
| 关键词 | True triaxial Time-delayed rockburst Crack evolution characteristics Macro failure characteristics AE |
| ISSN号 | 2363-8419 |
| DOI | 10.1007/s40948-023-00706-0 |
| 英文摘要 | A series of tests for time-delayed rockburst of granite under true triaxial condition was designed and carried out. By using the true triaxial rockburst test system, an acoustic emission (AE) system, a high-speed camera system, and a digital image motion analysis software, the time-delayed rockburst development process was monitored and studied. Four stages were found in the failure of granite time-delayed rockburst, i.e. grains ejection, slab breaks and ejects, first fragments ejection and second fragments ejection. There is a "V" shear crack generated in the time-delayed rockburst sample, and several tensile cracks in the lower part of the rock sample cross through the "V" shear crack. The longer the duration (the time elapsed between the moments the AE hits rises rapidly and the rockburst occurs), the smaller the depth of the rockburst pit. The time-delayed rockburst debris are mainly composed of blocks and fragments. The longer the duration, the smaller the total debris mass, the percentage of ejected debris and the ejection kinetic energy. The fractal dimension of the debris is positively correlated with the duration. The longer the duration, the higher the degree of fragmentation. The cracks generated are tensile-shear composite cracks. In the loading stage, it is dominated by shear cracks. However, in the time-lag stage, it is dominated by tensile cracks. With the increase of the duration, the proportion of tensile cracks increased and the proportion of shear cracks decreased. The research results will have a certain reference value for the warning and risk mitigation of time-delayed rockbursts. Four stages were found in the failure of granite time-delayed rockburst.The longer the duration, the smaller the total debris mass, the percentage of ejected debris and the ejection kinetic energy.The loading stage is mainly resembled with shear cracks, while the time-lag stage is mainly with tensile cracks in the time-delayed rockburst. |
| 资助项目 | National Natural Science Foundation of China[41972295] ; Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, China[2019ZDK034] ; Project of Youth Innovation Promotion Association of Chinese Academy of Sciences[2021326] |
| WOS研究方向 | Energy & Fuels ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001115644300004 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40061]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Feng, Guang-liang |
| 作者单位 | 1.Politecn Torino, Dept Struct Engn Geotech & Bldg Engn, Corso Duca Degli Abruzzi 24, I-10129 Turin, Italy 2.China Three Gorges Univ, Hubei Key Lab Disaster Prevent & Mitigat, Yichang 443002, Hubei, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 5.Guangxi Key Lab Disaster Prevent & Engn Safety, Nanning 530004, Guangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Guang-liang,Ma, Qi,Lacidogna, Giuseppe,et al. Experimental study on the failure characteristic and mechanism of granite time-delayed rockburst under true triaxial condition[J]. GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,2023,9(1):21. |
| APA | Feng, Guang-liang,Ma, Qi,Lacidogna, Giuseppe,Pan, Peng-zhi,Wang, Zhao-feng,&Su, Guo-shao.(2023).Experimental study on the failure characteristic and mechanism of granite time-delayed rockburst under true triaxial condition.GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,9(1),21. |
| MLA | Feng, Guang-liang,et al."Experimental study on the failure characteristic and mechanism of granite time-delayed rockburst under true triaxial condition".GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES 9.1(2023):21. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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