Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric Distribution
Because of the requirement of the mechanical properties of the damaged surrounding granite rock and the existence of the fracture water in hydraulic fracturing engineering, the strength of granite is related to the fabric, and the roughness of the section is also related to the liquid flow rate, a m...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/9985919 |
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| _version_ | 1832561554149605376 |
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| author | GuangSheng Du ShiJiang Chen Xiaoyi Chen Yunfeng Gao Hailong Wu |
| author_facet | GuangSheng Du ShiJiang Chen Xiaoyi Chen Yunfeng Gao Hailong Wu |
| author_sort | GuangSheng Du |
| collection | DOAJ |
| description | Because of the requirement of the mechanical properties of the damaged surrounding granite rock and the existence of the fracture water in hydraulic fracturing engineering, the strength of granite is related to the fabric, and the roughness of the section is also related to the liquid flow rate, a method of roughly determining the strength of the specimen by observing the failure mode of rock is needed. Considering that the physical and mechanical properties of granite are obviously affected by the fabric, the discrete element numerical simulation method was used to reconstruct the granite fabric based on the spatial correlation function to simulate the splitting experiment to investigate the failure mode of the specimen. The relationship between strength, the fractal value of cross-section, and the fabric was analyzed, which was verified through experiment. The results show that (1) the Voronoi GBM model with spatial correlation function of the discrete element can effectively simulate the controllable granite fabric and carry out micromechanical analysis. (2) The strength of the granite specimen and the fractal value of the cross-section have an obvious linear relationship with the fabric; besides, there is also a certain linear relationship between the strength of the specimen and the fractal value, which is influenced by granite fabric. (3) The predicted strength of the specimen according to the fractal value of the section is in good agreement with the actual strength with the error rate of 30%. In a word, this method can predict the strength of the specimen through the failure section and analyze the hydraulic fracture section and water pressure. |
| format | Article |
| id | doaj-art-2a2fef4c41f74069817017d55f8d1f49 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-2a2fef4c41f74069817017d55f8d1f492025-02-03T01:24:42ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/99859199985919Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric DistributionGuangSheng Du0ShiJiang Chen1Xiaoyi Chen2Yunfeng Gao3Hailong Wu4College of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou, 014010 Inner Mongolia, ChinaCollege of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou, 014010 Inner Mongolia, ChinaCollege of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou, 014010 Inner Mongolia, ChinaWulat Front Banner Yuanda Business Company with Limited Liability, ChinaWulat Front Banner Yuanda Business Company with Limited Liability, ChinaBecause of the requirement of the mechanical properties of the damaged surrounding granite rock and the existence of the fracture water in hydraulic fracturing engineering, the strength of granite is related to the fabric, and the roughness of the section is also related to the liquid flow rate, a method of roughly determining the strength of the specimen by observing the failure mode of rock is needed. Considering that the physical and mechanical properties of granite are obviously affected by the fabric, the discrete element numerical simulation method was used to reconstruct the granite fabric based on the spatial correlation function to simulate the splitting experiment to investigate the failure mode of the specimen. The relationship between strength, the fractal value of cross-section, and the fabric was analyzed, which was verified through experiment. The results show that (1) the Voronoi GBM model with spatial correlation function of the discrete element can effectively simulate the controllable granite fabric and carry out micromechanical analysis. (2) The strength of the granite specimen and the fractal value of the cross-section have an obvious linear relationship with the fabric; besides, there is also a certain linear relationship between the strength of the specimen and the fractal value, which is influenced by granite fabric. (3) The predicted strength of the specimen according to the fractal value of the section is in good agreement with the actual strength with the error rate of 30%. In a word, this method can predict the strength of the specimen through the failure section and analyze the hydraulic fracture section and water pressure.http://dx.doi.org/10.1155/2021/9985919 |
| spellingShingle | GuangSheng Du ShiJiang Chen Xiaoyi Chen Yunfeng Gao Hailong Wu Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric Distribution Geofluids |
| title | Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric Distribution |
| title_full | Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric Distribution |
| title_fullStr | Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric Distribution |
| title_full_unstemmed | Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric Distribution |
| title_short | Study on the Relationship between Fracture Morphology and Splitting Strength of Granite Based on Fabric Distribution |
| title_sort | study on the relationship between fracture morphology and splitting strength of granite based on fabric distribution |
| url | http://dx.doi.org/10.1155/2021/9985919 |
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