Experimental study on strain field evolution around a simulated thrust faultKey points
Earthquakes result from continuous geodynamic processes. A topic of significant interest for the scientific community is to elaborate on the phenomena governing the faulting and fracturing of crustal rocks. Therefore, in this study, uniaxial compressive shear failure experiments were conducted on Fa...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2023-02-01
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| Series: | Earthquake Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S167445192300006X |
| _version_ | 1797861138160943104 |
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| author | Yonghong Zhao Yanjun Xiao Jiaying Yang Xiaofan Li Andong Xu |
| author_facet | Yonghong Zhao Yanjun Xiao Jiaying Yang Xiaofan Li Andong Xu |
| author_sort | Yonghong Zhao |
| collection | DOAJ |
| description | Earthquakes result from continuous geodynamic processes. A topic of significant interest for the scientific community is to elaborate on the phenomena governing the faulting and fracturing of crustal rocks. Therefore, in this study, uniaxial compressive shear failure experiments were conducted on Fangshan marble rock samples with a prefabricated slot to simulate thrust faulting. The center of each marble plate (105 mm × 80 mm × 5 mm) was engraved with a 30-mm long double-sided nonpenetrating slot (depth: 2 mm, width: 0.5 mm). The deformation and destruction processes of the rock surface were recorded using a high-speed camera. The digital image correlation method was used to calculate the displacement and strain distribution and variation at different loading stages. The accumulative and incremental displacement fields u and v, strain field ex and ey, and shear strain exy were analyzed. When the loading level reached its ultimate value, the strain field was concentrated around the prefabricated slot. The concentration reached a maximum at the ends of the prefabricated slot. The magnitude of shear strain reached 0.1. This experiment contributes to our understanding of the dynamic process of active faulting. |
| first_indexed | 2024-04-09T21:57:14Z |
| format | Article |
| id | doaj.art-3fc4ff5836e449eaa22c3f11c9c3f721 |
| institution | Directory Open Access Journal |
| issn | 1867-8777 |
| language | English |
| last_indexed | 2024-04-09T21:57:14Z |
| publishDate | 2023-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Earthquake Science |
| spelling | doaj.art-3fc4ff5836e449eaa22c3f11c9c3f7212023-03-24T04:22:09ZengKeAi Communications Co., Ltd.Earthquake Science1867-87772023-02-013614051Experimental study on strain field evolution around a simulated thrust faultKey pointsYonghong Zhao0Yanjun Xiao1Jiaying Yang2Xiaofan Li3Andong Xu4School of Earth and Space Sciences, Peking University, Beijing 100871, ChinaState Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, China; SinoPEC Key Laboratory of Seismic Elastic Wave Technology, Beijing 100083, China; SinoPEC Petroleum Exploration and Production Research Institute, Beijing 100083, ChinaSchool of Earth and Space Sciences, Peking University, Beijing 100871, China; Corresponding author: yang_jiaying@pku.edu.cnSchool of Earth and Space Sciences, Peking University, Beijing 100871, ChinaSchool of Earth and Space Sciences, Peking University, Beijing 100871, ChinaEarthquakes result from continuous geodynamic processes. A topic of significant interest for the scientific community is to elaborate on the phenomena governing the faulting and fracturing of crustal rocks. Therefore, in this study, uniaxial compressive shear failure experiments were conducted on Fangshan marble rock samples with a prefabricated slot to simulate thrust faulting. The center of each marble plate (105 mm × 80 mm × 5 mm) was engraved with a 30-mm long double-sided nonpenetrating slot (depth: 2 mm, width: 0.5 mm). The deformation and destruction processes of the rock surface were recorded using a high-speed camera. The digital image correlation method was used to calculate the displacement and strain distribution and variation at different loading stages. The accumulative and incremental displacement fields u and v, strain field ex and ey, and shear strain exy were analyzed. When the loading level reached its ultimate value, the strain field was concentrated around the prefabricated slot. The concentration reached a maximum at the ends of the prefabricated slot. The magnitude of shear strain reached 0.1. This experiment contributes to our understanding of the dynamic process of active faulting.http://www.sciencedirect.com/science/article/pii/S167445192300006Xexperimental studydeformation field evolutionfracture processearthquake |
| spellingShingle | Yonghong Zhao Yanjun Xiao Jiaying Yang Xiaofan Li Andong Xu Experimental study on strain field evolution around a simulated thrust faultKey points Earthquake Science experimental study deformation field evolution fracture process earthquake |
| title | Experimental study on strain field evolution around a simulated thrust faultKey points |
| title_full | Experimental study on strain field evolution around a simulated thrust faultKey points |
| title_fullStr | Experimental study on strain field evolution around a simulated thrust faultKey points |
| title_full_unstemmed | Experimental study on strain field evolution around a simulated thrust faultKey points |
| title_short | Experimental study on strain field evolution around a simulated thrust faultKey points |
| title_sort | experimental study on strain field evolution around a simulated thrust faultkey points |
| topic | experimental study deformation field evolution fracture process earthquake |
| url | http://www.sciencedirect.com/science/article/pii/S167445192300006X |
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