Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical coupling
Abstract In situ stress and groundwater have important effects on the deformation and stability of deep underground rock masses. Therefore, it is extremely important to study the mechanical properties and permeability evolutionary processes of rocks under hydromechanical (HM) coupling. The purpose o...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-12-01
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| Series: | Energy Science & Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ese3.1281 |
| _version_ | 1797980025149980672 |
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| author | Guozhu Wang Lei Song Qirui Wang Zhuangcai Tian Junqi Fan Yu Wang Jianwei Ren Weihao Yang Haipeng Li Mingwei Zhang Honglei Shen |
| author_facet | Guozhu Wang Lei Song Qirui Wang Zhuangcai Tian Junqi Fan Yu Wang Jianwei Ren Weihao Yang Haipeng Li Mingwei Zhang Honglei Shen |
| author_sort | Guozhu Wang |
| collection | DOAJ |
| description | Abstract In situ stress and groundwater have important effects on the deformation and stability of deep underground rock masses. Therefore, it is extremely important to study the mechanical properties and permeability evolutionary processes of rocks under hydromechanical (HM) coupling. The purpose of this study was to investigate the mechanical properties and permeability evolution of sandstone using triaxial compression tests under different confining and seepage pressures. The test results show that the confining pressure can increase the strength of sandstone, whereas the seepage pressure has the opposite effect. The initial and maximum permeabilities were positively correlated with seepage pressure and negatively correlated with confining pressure. The confining and seepage pressures had little effect on the change in initial permeability. As a common parameter of acoustic emission (AE), cumulative AE counts can intuitively reflect the permeability evolutionary process in the sandstone failure process. A permeability evolutionary early warning model for the sandstone failure process under HM coupling is proposed. The results are helpful for understanding the influence of in situ stress and seepage pressure on deep sandstone and the permeability evolutionary mechanism, and they can be used to provide early warning of water inrush disasters in deep underground structures. |
| first_indexed | 2024-04-11T05:47:59Z |
| format | Article |
| id | doaj.art-8514fb3641594b98814ddf1ef6fb0d20 |
| institution | Directory Open Access Journal |
| issn | 2050-0505 |
| language | English |
| last_indexed | 2024-04-11T05:47:59Z |
| publishDate | 2022-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Energy Science & Engineering |
| spelling | doaj.art-8514fb3641594b98814ddf1ef6fb0d202022-12-22T04:42:09ZengWileyEnergy Science & Engineering2050-05052022-12-0110124466448010.1002/ese3.1281Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical couplingGuozhu Wang0Lei Song1Qirui Wang2Zhuangcai Tian3Junqi Fan4Yu Wang5Jianwei Ren6Weihao Yang7Haipeng Li8Mingwei Zhang9Honglei Shen10State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaInstitute of Defense Engineering Academy of Military Sciences Luoyang ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaInstitute of Defense Engineering Academy of Military Sciences Luoyang ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou ChinaAbstract In situ stress and groundwater have important effects on the deformation and stability of deep underground rock masses. Therefore, it is extremely important to study the mechanical properties and permeability evolutionary processes of rocks under hydromechanical (HM) coupling. The purpose of this study was to investigate the mechanical properties and permeability evolution of sandstone using triaxial compression tests under different confining and seepage pressures. The test results show that the confining pressure can increase the strength of sandstone, whereas the seepage pressure has the opposite effect. The initial and maximum permeabilities were positively correlated with seepage pressure and negatively correlated with confining pressure. The confining and seepage pressures had little effect on the change in initial permeability. As a common parameter of acoustic emission (AE), cumulative AE counts can intuitively reflect the permeability evolutionary process in the sandstone failure process. A permeability evolutionary early warning model for the sandstone failure process under HM coupling is proposed. The results are helpful for understanding the influence of in situ stress and seepage pressure on deep sandstone and the permeability evolutionary mechanism, and they can be used to provide early warning of water inrush disasters in deep underground structures.https://doi.org/10.1002/ese3.1281acoustic emissioncrack initiation and propagationpermeability evolutionsandstonetriaxial HM coupling |
| spellingShingle | Guozhu Wang Lei Song Qirui Wang Zhuangcai Tian Junqi Fan Yu Wang Jianwei Ren Weihao Yang Haipeng Li Mingwei Zhang Honglei Shen Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical coupling Energy Science & Engineering acoustic emission crack initiation and propagation permeability evolution sandstone triaxial HM coupling |
| title | Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical coupling |
| title_full | Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical coupling |
| title_fullStr | Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical coupling |
| title_full_unstemmed | Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical coupling |
| title_short | Experimental study on the mechanical properties, acoustic emission characteristics, and permeability evolution of sandstone under triaxial hydromechanical coupling |
| title_sort | experimental study on the mechanical properties acoustic emission characteristics and permeability evolution of sandstone under triaxial hydromechanical coupling |
| topic | acoustic emission crack initiation and propagation permeability evolution sandstone triaxial HM coupling |
| url | https://doi.org/10.1002/ese3.1281 |
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