Study on mechanical properties and fractal evolution law of containing tectonic coal combination
To study the mechanical properties of tectonic coal combination specimens, based on the occurrence characteristics of coal seam in a high gas mine, this study carried out the mechanical properties test experiment of loading and fracture process of containing tectonic coal combination, and quantitati...
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Editorial Office of Safety in Coal Mines
2025-06-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231452 |
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| author | Qiudong SHAO Wenbo PEI Qiping LI Xingpeng REN Pengxiang ZHAO Yanbiao TIAN Li GUO |
| author_facet | Qiudong SHAO Wenbo PEI Qiping LI Xingpeng REN Pengxiang ZHAO Yanbiao TIAN Li GUO |
| author_sort | Qiudong SHAO |
| collection | DOAJ |
| description | To study the mechanical properties of tectonic coal combination specimens, based on the occurrence characteristics of coal seam in a high gas mine, this study carried out the mechanical properties test experiment of loading and fracture process of containing tectonic coal combination, and quantitatively analyzed the fracture evolution law of containing tectonic coal combination specimens by introducing fractal dimension. The results show that the compressive strength of the composite specimens containing tectonic coal is negatively correlated with the proportion of tectonic coal thickness, and the range of compressive strength variation corresponding to the proportion of structural coal thinkness from 0 to 100% is 22.94-7.65 MPa. The fractal dimensions of peak strain and peak stress point are positively correlated with the proportion of tectonic coal thickness, and the variation ranges of the fractal dimensions of the peak strain and peak stress points corresponding to the proportion of structural coal thickness from 0 to 100% are 1.21%-1.80% and 1.1714-1.1967, respectively; the fractal dimension of the composite specimens containing tectonic coal increases gradually with the increase of loading stress. The larger the proportion of tectonic coal thickness, the higher the complexity of the surface fracture development of the corresponding test piece when the fracture occurs. |
| format | Article |
| id | doaj-art-a157de4672844d0d8e452b86740f2ca0 |
| institution | DOAJ |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-a157de4672844d0d8e452b86740f2ca02025-08-20T02:39:52ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-06-0156612313210.13347/j.cnki.mkaq.20231452zMKAQ20231452Study on mechanical properties and fractal evolution law of containing tectonic coal combinationQiudong SHAO0Wenbo PEI1Qiping LI2Xingpeng REN3Pengxiang ZHAO4Yanbiao TIAN5Li GUO6Heze Tengda Coal Mine, Xinjiang Changji Heze Tengda Mining Co., Ltd., Changji 831100, ChinaSchool of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, ChinaHeze Tengda Coal Mine, Xinjiang Changji Heze Tengda Mining Co., Ltd., Changji 831100, ChinaHeze Tengda Coal Mine, Xinjiang Changji Heze Tengda Mining Co., Ltd., Changji 831100, ChinaSchool of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, ChinaHeze Tengda Coal Mine, Xinjiang Changji Heze Tengda Mining Co., Ltd., Changji 831100, ChinaHeze Tengda Coal Mine, Xinjiang Changji Heze Tengda Mining Co., Ltd., Changji 831100, ChinaTo study the mechanical properties of tectonic coal combination specimens, based on the occurrence characteristics of coal seam in a high gas mine, this study carried out the mechanical properties test experiment of loading and fracture process of containing tectonic coal combination, and quantitatively analyzed the fracture evolution law of containing tectonic coal combination specimens by introducing fractal dimension. The results show that the compressive strength of the composite specimens containing tectonic coal is negatively correlated with the proportion of tectonic coal thickness, and the range of compressive strength variation corresponding to the proportion of structural coal thinkness from 0 to 100% is 22.94-7.65 MPa. The fractal dimensions of peak strain and peak stress point are positively correlated with the proportion of tectonic coal thickness, and the variation ranges of the fractal dimensions of the peak strain and peak stress points corresponding to the proportion of structural coal thickness from 0 to 100% are 1.21%-1.80% and 1.1714-1.1967, respectively; the fractal dimension of the composite specimens containing tectonic coal increases gradually with the increase of loading stress. The larger the proportion of tectonic coal thickness, the higher the complexity of the surface fracture development of the corresponding test piece when the fracture occurs.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231452coal and rock dynamic disasterscontaining tectonic coal combinationloading fracturefracture evolutiondamage patternfractal characteristics |
| spellingShingle | Qiudong SHAO Wenbo PEI Qiping LI Xingpeng REN Pengxiang ZHAO Yanbiao TIAN Li GUO Study on mechanical properties and fractal evolution law of containing tectonic coal combination Meikuang Anquan coal and rock dynamic disasters containing tectonic coal combination loading fracture fracture evolution damage pattern fractal characteristics |
| title | Study on mechanical properties and fractal evolution law of containing tectonic coal combination |
| title_full | Study on mechanical properties and fractal evolution law of containing tectonic coal combination |
| title_fullStr | Study on mechanical properties and fractal evolution law of containing tectonic coal combination |
| title_full_unstemmed | Study on mechanical properties and fractal evolution law of containing tectonic coal combination |
| title_short | Study on mechanical properties and fractal evolution law of containing tectonic coal combination |
| title_sort | study on mechanical properties and fractal evolution law of containing tectonic coal combination |
| topic | coal and rock dynamic disasters containing tectonic coal combination loading fracture fracture evolution damage pattern fractal characteristics |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231452 |
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