Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal Seam
In order to effectively control the stability of surrounding rock in ultra-large span open-off cuts by employing the techniques of support strength theory calculations and analogical application methods, two sets of rational support schemes were proposed, and the optimal design of active support par...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/23/12804 |
| _version_ | 1797400474937196544 |
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| author | Lin Pu Yingjie Liu Yongbo Cai Zuo Sun Xin Zhou |
| author_facet | Lin Pu Yingjie Liu Yongbo Cai Zuo Sun Xin Zhou |
| author_sort | Lin Pu |
| collection | DOAJ |
| description | In order to effectively control the stability of surrounding rock in ultra-large span open-off cuts by employing the techniques of support strength theory calculations and analogical application methods, two sets of rational support schemes were proposed, and the optimal design of active support parameters in thick coal seams with ultra-large span open-off cuts was explored by using theoretical analysis, numerical simulation, and field experiments. The results demonstrated that the span is one of the key factors influencing the stability of the roadway roof, exhibiting an inverse quadratic relationship with the peak stress borne by the roadway roof. By utilizing the pre-stressing force of anchor cables and support strength formulas, two sets of active support schemes for controlling the surrounding rock in thick coal seams with ultra-large span open-off cuts were established, and an optimized support scheme was obtained through numerical simulation. These findings provide references and guidance for related mining engineering under actual conditions in mines. |
| first_indexed | 2024-03-09T01:55:07Z |
| format | Article |
| id | doaj.art-bc87dff419f440b882f50a7944973f34 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T01:55:07Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-bc87dff419f440b882f50a7944973f342023-12-08T15:11:46ZengMDPI AGApplied Sciences2076-34172023-11-0113231280410.3390/app132312804Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal SeamLin Pu0Yingjie Liu1Yongbo Cai2Zuo Sun3Xin Zhou4Baode Coal Mine of Shendong Coal Group, Xinzhou 036600, ChinaEmergency Science Research Institute, Chinese Institute of Coal Science, Beijing 100013, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology, Beijing 100083, ChinaIn order to effectively control the stability of surrounding rock in ultra-large span open-off cuts by employing the techniques of support strength theory calculations and analogical application methods, two sets of rational support schemes were proposed, and the optimal design of active support parameters in thick coal seams with ultra-large span open-off cuts was explored by using theoretical analysis, numerical simulation, and field experiments. The results demonstrated that the span is one of the key factors influencing the stability of the roadway roof, exhibiting an inverse quadratic relationship with the peak stress borne by the roadway roof. By utilizing the pre-stressing force of anchor cables and support strength formulas, two sets of active support schemes for controlling the surrounding rock in thick coal seams with ultra-large span open-off cuts were established, and an optimized support scheme was obtained through numerical simulation. These findings provide references and guidance for related mining engineering under actual conditions in mines.https://www.mdpi.com/2076-3417/13/23/12804surrounding rock controlthick coal seamsopen-off cutssupport parameter |
| spellingShingle | Lin Pu Yingjie Liu Yongbo Cai Zuo Sun Xin Zhou Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal Seam Applied Sciences surrounding rock control thick coal seams open-off cuts support parameter |
| title | Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal Seam |
| title_full | Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal Seam |
| title_fullStr | Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal Seam |
| title_full_unstemmed | Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal Seam |
| title_short | Study on Active Support Parameters for Surrounding Rock with Ultra-Large Span Open-Off Cut in Thick Coal Seam |
| title_sort | study on active support parameters for surrounding rock with ultra large span open off cut in thick coal seam |
| topic | surrounding rock control thick coal seams open-off cuts support parameter |
| url | https://www.mdpi.com/2076-3417/13/23/12804 |
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