Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stope
Abstract Significant hanging wall exposure in stopes of underground iron mines with inclined orebodies affects mine safety and efficiency. An extended Mathews stability graph method, combined with numerical simulations, was employed to evaluate stope stability. Rock mass quality was assessed using t...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-11280-8 |
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| author | Chunlin You Jianhua Hu Jianing Li Jiwei Zhang Zhonghua Qi |
| author_facet | Chunlin You Jianhua Hu Jianing Li Jiwei Zhang Zhonghua Qi |
| author_sort | Chunlin You |
| collection | DOAJ |
| description | Abstract Significant hanging wall exposure in stopes of underground iron mines with inclined orebodies affects mine safety and efficiency. An extended Mathews stability graph method, combined with numerical simulations, was employed to evaluate stope stability. Rock mass quality was assessed using the RMR grading system and Q′ values. Stability probabilities were determined by fitting stability isoprobability lines on the Mathews stability graph and analyzing exposure time, along with FLAC3D modeling to analyze the mechanical response of different exposure areas. The results showed that the expanded Mathews stability graph could determine the stability probability of various exposure areas. Increasing the stope length under the same exposure area improved stress distribution and reduced plastic destruction. Reducing exposure time enhanced stope stability. Numerical simulations suggested optimal exposure areas and structural parameters: 30 m × 15 m and 40 m × 12.5 m, with a maximum exposure time of 3 months and corresponding limit exposure areas of 450 m2 and 500 m2, respectively. These findings effectively improved the stability and safety of the stopes. |
| format | Article |
| id | doaj-art-ddee8f96f15d4a259b247ddd1c0738b9 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-ddee8f96f15d4a259b247ddd1c0738b92025-08-20T04:03:06ZengNature PortfolioScientific Reports2045-23222025-07-0115111210.1038/s41598-025-11280-8Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stopeChunlin You0Jianhua Hu1Jianing Li2Jiwei Zhang3Zhonghua Qi4Zijin School of Geology and Mining, Fuzhou UniversityZijin School of Geology and Mining, Fuzhou UniversityCollege of Materials Science and Engineering, Fuzhou UniversityShandong Hualian Mining Co., Ltd.Shandong Hualian Mining Co., Ltd.Abstract Significant hanging wall exposure in stopes of underground iron mines with inclined orebodies affects mine safety and efficiency. An extended Mathews stability graph method, combined with numerical simulations, was employed to evaluate stope stability. Rock mass quality was assessed using the RMR grading system and Q′ values. Stability probabilities were determined by fitting stability isoprobability lines on the Mathews stability graph and analyzing exposure time, along with FLAC3D modeling to analyze the mechanical response of different exposure areas. The results showed that the expanded Mathews stability graph could determine the stability probability of various exposure areas. Increasing the stope length under the same exposure area improved stress distribution and reduced plastic destruction. Reducing exposure time enhanced stope stability. Numerical simulations suggested optimal exposure areas and structural parameters: 30 m × 15 m and 40 m × 12.5 m, with a maximum exposure time of 3 months and corresponding limit exposure areas of 450 m2 and 500 m2, respectively. These findings effectively improved the stability and safety of the stopes.https://doi.org/10.1038/s41598-025-11280-8Expanded Mathews stability graphStability probabilityStope exposure areaExposure timeNumerical simulation |
| spellingShingle | Chunlin You Jianhua Hu Jianing Li Jiwei Zhang Zhonghua Qi Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stope Scientific Reports Expanded Mathews stability graph Stability probability Stope exposure area Exposure time Numerical simulation |
| title | Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stope |
| title_full | Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stope |
| title_fullStr | Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stope |
| title_full_unstemmed | Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stope |
| title_short | Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area in stope |
| title_sort | collaborative optimization of the mathews stability graph method and numerical simulation for the limit exposure area in stope |
| topic | Expanded Mathews stability graph Stability probability Stope exposure area Exposure time Numerical simulation |
| url | https://doi.org/10.1038/s41598-025-11280-8 |
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