Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides
The rational coal pillar width directly improves the utilization rate of coal resources and the safety of coal mines. Taking Jinjitan Coal Mine as the engineering background, using theoretical analysis and calculation through numerical simulation, the distribution of internal stress field and plasti...
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MDPI AG
2024-12-01
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| Online Access: | https://www.mdpi.com/2076-3417/15/1/314 |
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| author | Linjun Peng Kaixuan Gong Manchao He |
| author_facet | Linjun Peng Kaixuan Gong Manchao He |
| author_sort | Linjun Peng |
| collection | DOAJ |
| description | The rational coal pillar width directly improves the utilization rate of coal resources and the safety of coal mines. Taking Jinjitan Coal Mine as the engineering background, using theoretical analysis and calculation through numerical simulation, the distribution of internal stress field and plastic zone of different widths coal pillars under the influence of mining on one side and mining on both sides is compared and analyzed; the original 20 m coal pillar between 113 working face transportation roadway and auxiliary transportation roadway (i.e., 111 working face air return roadway) in Jinjitan Coal Mine was optimized. The result shows that, compared to the 20 m coal pillar, the distribution of the stress field and plastic zone in the optimized 16 m coal pillar affected by mining on both sides is reasonable; the roadway with the 16 m coal pillar between roadways can maintain its stability. According to the field monitoring results, the rationality of the 16 m coal pillar is verified. The coal pillar optimization scheme proposed in this research improves the utilization rate of coal resources and coal mine safety and provides a reliable reference for the coal pillar optimization with the same engineering background as a coal mine. |
| format | Article |
| id | doaj-art-5f82a9b045bd4b479834ca68c2addb46 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-5f82a9b045bd4b479834ca68c2addb462025-01-10T13:15:08ZengMDPI AGApplied Sciences2076-34172024-12-0115131410.3390/app15010314Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both SidesLinjun Peng0Kaixuan Gong1Manchao He2School of Civil Engineering and Architecture, Dalian University, Dalian 116622, ChinaSchool of Civil Engineering and Architecture, Dalian University, Dalian 116622, ChinaState Key Laboratory for Geomechanics & Deep Underground Engineering, Beijing 100083, ChinaThe rational coal pillar width directly improves the utilization rate of coal resources and the safety of coal mines. Taking Jinjitan Coal Mine as the engineering background, using theoretical analysis and calculation through numerical simulation, the distribution of internal stress field and plastic zone of different widths coal pillars under the influence of mining on one side and mining on both sides is compared and analyzed; the original 20 m coal pillar between 113 working face transportation roadway and auxiliary transportation roadway (i.e., 111 working face air return roadway) in Jinjitan Coal Mine was optimized. The result shows that, compared to the 20 m coal pillar, the distribution of the stress field and plastic zone in the optimized 16 m coal pillar affected by mining on both sides is reasonable; the roadway with the 16 m coal pillar between roadways can maintain its stability. According to the field monitoring results, the rationality of the 16 m coal pillar is verified. The coal pillar optimization scheme proposed in this research improves the utilization rate of coal resources and coal mine safety and provides a reliable reference for the coal pillar optimization with the same engineering background as a coal mine.https://www.mdpi.com/2076-3417/15/1/314coal pillar optimizationinfluence of miningabutment pressureplastic zone |
| spellingShingle | Linjun Peng Kaixuan Gong Manchao He Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides Applied Sciences coal pillar optimization influence of mining abutment pressure plastic zone |
| title | Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides |
| title_full | Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides |
| title_fullStr | Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides |
| title_full_unstemmed | Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides |
| title_short | Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides |
| title_sort | research on width optimization of bearing coal pillar between roadways under the influence of mining on both sides |
| topic | coal pillar optimization influence of mining abutment pressure plastic zone |
| url | https://www.mdpi.com/2076-3417/15/1/314 |
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