Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in Coal
Extensive bedding planes have a great influence on the mechanical properties of coal. In order to study the mechanism of the effects of bedding angles on the mechanical properties and failure characteristics of coal in the Shanxi Baode coal mine, uniaxial and triaxial compression tests and numerical...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/3/345 |
| _version_ | 1797444576896614400 |
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| author | Yongfei Li Baoyun Zhao Jiaosheng Yang Junchang Sun Wei Huang Ziyun Li Bingyuan Wang |
| author_facet | Yongfei Li Baoyun Zhao Jiaosheng Yang Junchang Sun Wei Huang Ziyun Li Bingyuan Wang |
| author_sort | Yongfei Li |
| collection | DOAJ |
| description | Extensive bedding planes have a great influence on the mechanical properties of coal. In order to study the mechanism of the effects of bedding angles on the mechanical properties and failure characteristics of coal in the Shanxi Baode coal mine, uniaxial and triaxial compression tests and numerical simulations were conducted. The strength deterioration and microstructural changes in the samples were then analyzed with discrete element method (DEM) numerical simulation. The experimental results reveal that the power function strength criterion has good applicability to the strength characteristics of this coal. It was also found that the bedding angles have a great influence on the mechanical properties of coal. The properties of peak strength at different bedding angles roughly showed a U-shaped changing trend. The maximum strength occurred at a bedding angle of 0°, whereas the minimum strength occurred at a bedding angle of 60°. The numerical simulation and test results prove that the forms of failure of different bedding coal samples are complicated and are mainly represented by tensile and shear failures. |
| first_indexed | 2024-03-09T13:13:23Z |
| format | Article |
| id | doaj.art-7432473d241845759ee90b4870fa3726 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T13:13:23Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-7432473d241845759ee90b4870fa37262023-11-30T21:38:50ZengMDPI AGMinerals2075-163X2022-03-0112334510.3390/min12030345Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in CoalYongfei Li0Baoyun Zhao1Jiaosheng Yang2Junchang Sun3Wei Huang4Ziyun Li5Bingyuan Wang6School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaPetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaExtensive bedding planes have a great influence on the mechanical properties of coal. In order to study the mechanism of the effects of bedding angles on the mechanical properties and failure characteristics of coal in the Shanxi Baode coal mine, uniaxial and triaxial compression tests and numerical simulations were conducted. The strength deterioration and microstructural changes in the samples were then analyzed with discrete element method (DEM) numerical simulation. The experimental results reveal that the power function strength criterion has good applicability to the strength characteristics of this coal. It was also found that the bedding angles have a great influence on the mechanical properties of coal. The properties of peak strength at different bedding angles roughly showed a U-shaped changing trend. The maximum strength occurred at a bedding angle of 0°, whereas the minimum strength occurred at a bedding angle of 60°. The numerical simulation and test results prove that the forms of failure of different bedding coal samples are complicated and are mainly represented by tensile and shear failures.https://www.mdpi.com/2075-163X/12/3/345coalbedding angletriaxial compression testdeformation failure properties |
| spellingShingle | Yongfei Li Baoyun Zhao Jiaosheng Yang Junchang Sun Wei Huang Ziyun Li Bingyuan Wang Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in Coal Minerals coal bedding angle triaxial compression test deformation failure properties |
| title | Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in Coal |
| title_full | Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in Coal |
| title_fullStr | Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in Coal |
| title_full_unstemmed | Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in Coal |
| title_short | Experimental Study on the Influence of Confining Pressure and Bedding Angles on Mechanical Properties in Coal |
| title_sort | experimental study on the influence of confining pressure and bedding angles on mechanical properties in coal |
| topic | coal bedding angle triaxial compression test deformation failure properties |
| url | https://www.mdpi.com/2075-163X/12/3/345 |
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