Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group
Abstract Utilizing research methods such as physical simulation experiments with similar materials, numerical calculations, and theoretical analysis, the law governing the development of fissures in the horizontal section stope of steeply dipping coal seam groups has been systematically studied. The...
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Nature Portfolio
2025-08-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-15701-6 |
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| author | Xie Panshi Yuan Bodi Zhang Bo Huang Baofa Fang Jiarui |
| author_facet | Xie Panshi Yuan Bodi Zhang Bo Huang Baofa Fang Jiarui |
| author_sort | Xie Panshi |
| collection | DOAJ |
| description | Abstract Utilizing research methods such as physical simulation experiments with similar materials, numerical calculations, and theoretical analysis, the law governing the development of fissures in the horizontal section stope of steeply dipping coal seam groups has been systematically studied. The findings indicate that when interlayer fissures are undeveloped and not penetrated, the extent and quantity of surrounding rock fissures in the alternate mining of each section are influenced by the degree of section advancement and the subsequent mining. The overlying rock fissures ultimately form a stepped distribution pattern, with a higher tendency above and a lower tendency below. As the section advance reaches the sixth degree, the fissure distribution in the inclined direction of the 4# coal seam consistently exhibits a stepped shape, with a narrow upper and wide lower portion. The strike direction changes from an asymmetric stepped fissure distribution with a lower front and higher rear to a rectangular symmetrical distribution. Upon advancing to 30 m, the fissures between the 2# coal and 4# coal develop and penetrate. The height of the 2# coal fissure zone, as determined by theoretical analysis, aligns with the results of numerical simulation, with a maximum relative error of 2.38%. |
| format | Article |
| id | doaj-art-0bd6cf8e9b044f2ca5af01eeb1ff3caa |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-0bd6cf8e9b044f2ca5af01eeb1ff3caa2025-08-20T04:03:13ZengNature PortfolioScientific Reports2045-23222025-08-0115111410.1038/s41598-025-15701-6Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam groupXie Panshi0Yuan Bodi1Zhang Bo2Huang Baofa3Fang Jiarui4College of energy engineering, Xi’an university of science and technologyCollege of energy engineering, Xi’an university of science and technologyCollege of energy engineering, Xi’an university of science and technologyCollege of energy engineering, Xi’an university of science and technologyCollege of energy engineering, Xi’an university of science and technologyAbstract Utilizing research methods such as physical simulation experiments with similar materials, numerical calculations, and theoretical analysis, the law governing the development of fissures in the horizontal section stope of steeply dipping coal seam groups has been systematically studied. The findings indicate that when interlayer fissures are undeveloped and not penetrated, the extent and quantity of surrounding rock fissures in the alternate mining of each section are influenced by the degree of section advancement and the subsequent mining. The overlying rock fissures ultimately form a stepped distribution pattern, with a higher tendency above and a lower tendency below. As the section advance reaches the sixth degree, the fissure distribution in the inclined direction of the 4# coal seam consistently exhibits a stepped shape, with a narrow upper and wide lower portion. The strike direction changes from an asymmetric stepped fissure distribution with a lower front and higher rear to a rectangular symmetrical distribution. Upon advancing to 30 m, the fissures between the 2# coal and 4# coal develop and penetrate. The height of the 2# coal fissure zone, as determined by theoretical analysis, aligns with the results of numerical simulation, with a maximum relative error of 2.38%.https://doi.org/10.1038/s41598-025-15701-6Steeply dipping coal seam groupHorizontal section cavingOverburden rock movementFissure |
| spellingShingle | Xie Panshi Yuan Bodi Zhang Bo Huang Baofa Fang Jiarui Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group Scientific Reports Steeply dipping coal seam group Horizontal section caving Overburden rock movement Fissure |
| title | Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group |
| title_full | Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group |
| title_fullStr | Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group |
| title_full_unstemmed | Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group |
| title_short | Study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group |
| title_sort | study on fissure development law of surrounding rock in horizontal section stope of steeply dipping coal seam group |
| topic | Steeply dipping coal seam group Horizontal section caving Overburden rock movement Fissure |
| url | https://doi.org/10.1038/s41598-025-15701-6 |
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