Influences of dynamic normal disturbance and initial shear stress on fault activation characteristics
文献类型：期刊论文
| 作者 | Cui, Guojian; Zhang, Chuanqing; Ye, Jinping; Zhou, Hui; Li, Lingyu; Zhang, Luosong |
| 刊名 | GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 8期号:5 |
| 关键词 | Fault activation Fault slip Dynamic disturbance Triggering mechanism Instability characteristics |
| ISSN号 | 2363-8419 |
| 英文摘要 | Dynamic disturbance resulting from blasting, excavation, and earthquakes might change the stress state, friction characteristics, failure mechanism, and the fault's failure mode, induce the activation of steady fault, and cause some further strong dynamic geological disasters, such as rockbursts. To reveal the activation mechanism and characteristics of faults under a certain stress environment and external dynamic normal disturbance loading, systematic superimposed dynamic normal disturbance shear tests of saw-cut bare granite surfaces (i.e. simulated fault in the lab) were conducted using self-developed multifunctional shear test apparatus. Approximate regular and periodic changes in shear stress, apparent friction coefficient, relative shear displacement, and slip velocity were noted in all tests accompanied by phase lags between the peak or valley shear stresses (apparent friction coefficient, relative shear displacement, and slip velocity) and imposed normal stress oscillation. The fault state change is related to disturbance amplitude and initial shear stress. It was noted that a higher disturbance amplitude and initial shear stress favored the occurrence of fault activation. An abrupt shear stress drop indicated the onset of fault activation, where the apparent friction coefficient was close to the static friction coefficient. Moreover, the onset time of fault activation would be advanced, and intensity would be enhanced as initial shear stress and disturbance amplitude increase. The research results could improve our understanding of the dynamic response characteristics of faults under dynamic disturbance loading and further reveal the corresponding activation mechanism. |
| 学科主题 | Energy & Fuels ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000855449500002 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34885]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Cui, Guojian,Zhang, Chuanqing,Ye, Jinping,et al. Influences of dynamic normal disturbance and initial shear stress on fault activation characteristics[J]. GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,2022,8(5). |
| APA | Cui, Guojian,Zhang, Chuanqing,Ye, Jinping,Zhou, Hui,Li, Lingyu,&Zhang, Luosong.(2022).Influences of dynamic normal disturbance and initial shear stress on fault activation characteristics.GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,8(5). |
| MLA | Cui, Guojian,et al."Influences of dynamic normal disturbance and initial shear stress on fault activation characteristics".GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES 8.5(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。