Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control
Abstract Due to rock damage in close-range tunnels and difficulty controlling stability, proposes a precise surrounding rock control concept of goaf-retaining roadways in close-range without coal pillars. A mechanical model for the load transfer of overlying rock strata in the goaf under the roof cu...
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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/s41598-025-04197-9 |
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| author | Wanpeng Huang Yaxin Liu Tongyang Zhao Le Sui Xinyu Chu Lingzhuo Zhu |
| author_facet | Wanpeng Huang Yaxin Liu Tongyang Zhao Le Sui Xinyu Chu Lingzhuo Zhu |
| author_sort | Wanpeng Huang |
| collection | DOAJ |
| description | Abstract Due to rock damage in close-range tunnels and difficulty controlling stability, proposes a precise surrounding rock control concept of goaf-retaining roadways in close-range without coal pillars. A mechanical model for the load transfer of overlying rock strata in the goaf under the roof cutting structure of the roadway is constructed, and a precise quantitative support design method for the surrounding rock without coal pillars is formed, with the main steps being the mechanical rock properties research, the design of support strength, and the optimization of support structure schemes. To clarify the mechanical properties of high-strength support structures for steel-reinforced concrete pillars, indoor tests were conducted on long pillar supports with different aspect ratios to analyse the deformation failure modes and bearing performance of long pillars. Through numerical simulation, the peak support pressure of the roadway was reduced by 41.2% due to coordinated support and cutting, effectively reinforcing the roof and cutting off the stress transmission path. The deformation and failure control laws of the surrounding rock with different support schemes for goaf-retaining roadways in close-range were revealed. Successful application at Xinchazhuang coal mine significantly improved the stability control of the surrounding rock in the goaf compared to traditional support techniques. |
| format | Article |
| id | doaj-art-41c635ae5d204e1e9f1a90ff93de110c |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-41c635ae5d204e1e9f1a90ff93de110c2025-08-20T03:45:20ZengNature PortfolioScientific Reports2045-23222025-07-0115111710.1038/s41598-025-04197-9Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane controlWanpeng Huang0Yaxin Liu1Tongyang Zhao2Le Sui3Xinyu Chu4Lingzhuo Zhu5College of Energy and Mining Engineering, Shandong University of Science and TechnologyCollege of Energy and Mining Engineering, Shandong University of Science and TechnologyCollege of Energy and Mining Engineering, Shandong University of Science and TechnologySchool of Mechanical and Electrical Engineering, China University of Petroleum (East China)College of Energy and Mining Engineering, Shandong University of Science and TechnologyCollege of Energy and Mining Engineering, Shandong University of Science and TechnologyAbstract Due to rock damage in close-range tunnels and difficulty controlling stability, proposes a precise surrounding rock control concept of goaf-retaining roadways in close-range without coal pillars. A mechanical model for the load transfer of overlying rock strata in the goaf under the roof cutting structure of the roadway is constructed, and a precise quantitative support design method for the surrounding rock without coal pillars is formed, with the main steps being the mechanical rock properties research, the design of support strength, and the optimization of support structure schemes. To clarify the mechanical properties of high-strength support structures for steel-reinforced concrete pillars, indoor tests were conducted on long pillar supports with different aspect ratios to analyse the deformation failure modes and bearing performance of long pillars. Through numerical simulation, the peak support pressure of the roadway was reduced by 41.2% due to coordinated support and cutting, effectively reinforcing the roof and cutting off the stress transmission path. The deformation and failure control laws of the surrounding rock with different support schemes for goaf-retaining roadways in close-range were revealed. Successful application at Xinchazhuang coal mine significantly improved the stability control of the surrounding rock in the goaf compared to traditional support techniques.https://doi.org/10.1038/s41598-025-04197-9Close range coal seamsGatesSteel tube concrete high-strength supportHydraulic fracturingSurrounding rock control |
| spellingShingle | Wanpeng Huang Yaxin Liu Tongyang Zhao Le Sui Xinyu Chu Lingzhuo Zhu Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control Scientific Reports Close range coal seams Gates Steel tube concrete high-strength support Hydraulic fracturing Surrounding rock control |
| title | Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control |
| title_full | Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control |
| title_fullStr | Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control |
| title_full_unstemmed | Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control |
| title_short | Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control |
| title_sort | research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control |
| topic | Close range coal seams Gates Steel tube concrete high-strength support Hydraulic fracturing Surrounding rock control |
| url | https://doi.org/10.1038/s41598-025-04197-9 |
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