Distribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applications
Abstract In-situ stress is a significant factor in the occurrence of dynamic disasters in coal mines. Measured data from 22 measuring points in the Luxin mining area was analyzed to investigate the distribution of in-situ stress and regional structure action. The results reveal that in-situ stress i...
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Nature Portfolio
2025-05-01
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| Online Access: | https://doi.org/10.1038/s41598-025-01533-x |
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| author | Lang Lu Feng Wang Jun Mu Jianqiang Mi Baohong Chen Pingping Zhao |
| author_facet | Lang Lu Feng Wang Jun Mu Jianqiang Mi Baohong Chen Pingping Zhao |
| author_sort | Lang Lu |
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| description | Abstract In-situ stress is a significant factor in the occurrence of dynamic disasters in coal mines. Measured data from 22 measuring points in the Luxin mining area was analyzed to investigate the distribution of in-situ stress and regional structure action. The results reveal that in-situ stress in the Luxin mining area is predominantly a structure stress, it is mainly manifested in the medium and low stress levels. The maximum horizontal principal stress, minimum horizontal principal stress, and vertical principal stress are 5.47–18.8 MPa, 3-10.15 MPa, and 4.8–12.5 MPa, respectively, all of them are positively correlated with the burial depth. As the burial depth increases, the discreteness of the maximum and minimum horizontal principal stresses first increases and then decreases. The lateral pressure ratio varies from 0.6 to 2.1, gradually approaching 1 with increasing depth, and the discreteness gradually decreases with the increase of depth and its discreteness gradually decreases. The differences between maximum and minimum horizontal principal stress range from 2.47 to 9.6 MPa. The predominant direction of the maximum horizontal principal stress in the Luxin mining area is NW. The influence of the F1 and F2 reverse faults alters this direction, with seven measuring points indicating a maximum horizontal principal stress direction of N (21.4°-78.6°) E. From the axis of the Xishan anticline to the bottom of the flanks, the maximum horizontal principal stress generally increases. The F1 and F2 reverse faults cause stress redistribution, leading to fluctuations in the maximum horizontal principal stress in the hanging wall region of these faults. The distribution of in-situ stress in Luxin Mining Area is the result of the combined action of the Xishan anticline, faults and torsional stress in the north-south direction. The distribution of in-situ stress in Luxin Mining Area is the consequence of the combined effect of the Xishan anticline, faults, and torsional stress in the north-south direction. Based on the measured in-situ stress data from Shadunzi coal mine, a roadway support scheme for the S4103 working face was developed, which improved roadway stability. |
| format | Article |
| id | doaj-art-00acfb4eb53349c087dd739e6f465bbd |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-00acfb4eb53349c087dd739e6f465bbd2025-08-20T03:53:58ZengNature PortfolioScientific Reports2045-23222025-05-0115111510.1038/s41598-025-01533-xDistribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applicationsLang Lu0Feng Wang1Jun Mu2Jianqiang Mi3Baohong Chen4Pingping Zhao5College of Energy and Mining Engineering, Shandong University of Science and TechnologyCollege of Energy and Mining Engineering, Shandong University of Science and TechnologyShadunzi Coal Mine, Lu ’an Xinjiang Coal Chemical (Group) Co., Ltd.Shadunzi Coal Mine, Lu ’an Xinjiang Coal Chemical (Group) Co., Ltd.Shadunzi Coal Mine, Lu ’an Xinjiang Coal Chemical (Group) Co., Ltd.Shadunzi Coal Mine, Lu ’an Xinjiang Coal Chemical (Group) Co., Ltd.Abstract In-situ stress is a significant factor in the occurrence of dynamic disasters in coal mines. Measured data from 22 measuring points in the Luxin mining area was analyzed to investigate the distribution of in-situ stress and regional structure action. The results reveal that in-situ stress in the Luxin mining area is predominantly a structure stress, it is mainly manifested in the medium and low stress levels. The maximum horizontal principal stress, minimum horizontal principal stress, and vertical principal stress are 5.47–18.8 MPa, 3-10.15 MPa, and 4.8–12.5 MPa, respectively, all of them are positively correlated with the burial depth. As the burial depth increases, the discreteness of the maximum and minimum horizontal principal stresses first increases and then decreases. The lateral pressure ratio varies from 0.6 to 2.1, gradually approaching 1 with increasing depth, and the discreteness gradually decreases with the increase of depth and its discreteness gradually decreases. The differences between maximum and minimum horizontal principal stress range from 2.47 to 9.6 MPa. The predominant direction of the maximum horizontal principal stress in the Luxin mining area is NW. The influence of the F1 and F2 reverse faults alters this direction, with seven measuring points indicating a maximum horizontal principal stress direction of N (21.4°-78.6°) E. From the axis of the Xishan anticline to the bottom of the flanks, the maximum horizontal principal stress generally increases. The F1 and F2 reverse faults cause stress redistribution, leading to fluctuations in the maximum horizontal principal stress in the hanging wall region of these faults. The distribution of in-situ stress in Luxin Mining Area is the result of the combined action of the Xishan anticline, faults and torsional stress in the north-south direction. The distribution of in-situ stress in Luxin Mining Area is the consequence of the combined effect of the Xishan anticline, faults, and torsional stress in the north-south direction. Based on the measured in-situ stress data from Shadunzi coal mine, a roadway support scheme for the S4103 working face was developed, which improved roadway stability.https://doi.org/10.1038/s41598-025-01533-xLuxin mining areaIn-situ stressTectogenesisHydraulic fracturingRegularity of distribution |
| spellingShingle | Lang Lu Feng Wang Jun Mu Jianqiang Mi Baohong Chen Pingping Zhao Distribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applications Scientific Reports Luxin mining area In-situ stress Tectogenesis Hydraulic fracturing Regularity of distribution |
| title | Distribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applications |
| title_full | Distribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applications |
| title_fullStr | Distribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applications |
| title_full_unstemmed | Distribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applications |
| title_short | Distribution of in-situ stress and regional structural influence in the Luxin mining area and engineering applications |
| title_sort | distribution of in situ stress and regional structural influence in the luxin mining area and engineering applications |
| topic | Luxin mining area In-situ stress Tectogenesis Hydraulic fracturing Regularity of distribution |
| url | https://doi.org/10.1038/s41598-025-01533-x |
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