Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining area
Abstract In a coal mine in the northern region of Shaanxi Province, China, a facing-mining excavating roadway exists, which is intended to be retained for subsequent working face safety services. This paper investigates the deformation and damage characteristics of the surrounding rock in different...
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| Format: | Article |
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Nature Portfolio
2024-03-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-56295-9 |
| _version_ | 1797266792200011776 |
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| author | Li-Xin Zhang Li Yi Li Gang Guang-Chao Liu Ze-Hui Deng Jia-Le Mi |
| author_facet | Li-Xin Zhang Li Yi Li Gang Guang-Chao Liu Ze-Hui Deng Jia-Le Mi |
| author_sort | Li-Xin Zhang |
| collection | DOAJ |
| description | Abstract In a coal mine in the northern region of Shaanxi Province, China, a facing-mining excavating roadway exists, which is intended to be retained for subsequent working face safety services. This paper investigates the deformation and damage characteristics of the surrounding rock in different stages using FLAC 3D numerical simulation, taking the facing-mining excavating roadway of this coal mine as the research context. At 20 m ahead of the working face, a discontinuous plastic zone appears in the surrounding rock of the roadway, a phenomenon attributed to the varying hardness of the lithologyand termed 'plastic zone jumping.' The numerical simulation results have been were verified using drill hole peeping. Real-time monitoring of the roadway's stability is conducted on-site, showing that the roadway is significantly affected by mining at the 50 m point ahead of the working face. Based on the numerical simulation and on-site monitoring results, the support strength was increased at 50 m from the working face along the roadway, and a new support scheme was adopted. In the lagging section of the roadway, where mining pressure is strongly evident, differentiated reinforcement using anchor rods, anchor ropes, and W steel belts has been employed, resulting in a satisfactory on-site effect. |
| first_indexed | 2024-04-25T01:06:19Z |
| format | Article |
| id | doaj.art-c87c01afbc7f4d81a3a0de70416605ec |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-25T01:06:19Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-c87c01afbc7f4d81a3a0de70416605ec2024-03-10T12:12:53ZengNature PortfolioScientific Reports2045-23222024-03-011411910.1038/s41598-024-56295-9Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining areaLi-Xin Zhang0Li Yi1Li Gang2Guang-Chao Liu3Ze-Hui Deng4Jia-Le Mi5School of Mining, Liaoning Technical UniversitySchool of Mining, Liaoning Technical UniversitySchool of Mining, Liaoning Technical UniversitySchool of Mining, Liaoning Technical UniversitySchool of Mining, Liaoning Technical UniversitySchool of Mining, Liaoning Technical UniversityAbstract In a coal mine in the northern region of Shaanxi Province, China, a facing-mining excavating roadway exists, which is intended to be retained for subsequent working face safety services. This paper investigates the deformation and damage characteristics of the surrounding rock in different stages using FLAC 3D numerical simulation, taking the facing-mining excavating roadway of this coal mine as the research context. At 20 m ahead of the working face, a discontinuous plastic zone appears in the surrounding rock of the roadway, a phenomenon attributed to the varying hardness of the lithologyand termed 'plastic zone jumping.' The numerical simulation results have been were verified using drill hole peeping. Real-time monitoring of the roadway's stability is conducted on-site, showing that the roadway is significantly affected by mining at the 50 m point ahead of the working face. Based on the numerical simulation and on-site monitoring results, the support strength was increased at 50 m from the working face along the roadway, and a new support scheme was adopted. In the lagging section of the roadway, where mining pressure is strongly evident, differentiated reinforcement using anchor rods, anchor ropes, and W steel belts has been employed, resulting in a satisfactory on-site effect.https://doi.org/10.1038/s41598-024-56295-9Facing-mining excavatingNumerical simulationDamage characteristicsSurrounding rock control |
| spellingShingle | Li-Xin Zhang Li Yi Li Gang Guang-Chao Liu Ze-Hui Deng Jia-Le Mi Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining area Scientific Reports Facing-mining excavating Numerical simulation Damage characteristics Surrounding rock control |
| title | Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining area |
| title_full | Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining area |
| title_fullStr | Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining area |
| title_full_unstemmed | Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining area |
| title_short | Characteristics of surrounding rock damage and control technology of a facing-mining excavating roadway in north Shaanxi mining area |
| title_sort | characteristics of surrounding rock damage and control technology of a facing mining excavating roadway in north shaanxi mining area |
| topic | Facing-mining excavating Numerical simulation Damage characteristics Surrounding rock control |
| url | https://doi.org/10.1038/s41598-024-56295-9 |
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