“Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its Application
After coal mining enters the deep, the mining environment changes dramatically, and engineering disasters become increasingly prominent, which are mostly related to rock instability and failure. As traditional support is difficult to meet production needs, it is necessary to improve the support syst...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/10/6325 |
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| author | Tao Qin Binyang Duan Yanwei Duan Yaozu Ni Xiangang Hou Pingyun Ma Yue Yang |
| author_facet | Tao Qin Binyang Duan Yanwei Duan Yaozu Ni Xiangang Hou Pingyun Ma Yue Yang |
| author_sort | Tao Qin |
| collection | DOAJ |
| description | After coal mining enters the deep, the mining environment changes dramatically, and engineering disasters become increasingly prominent, which are mostly related to rock instability and failure. As traditional support is difficult to meet production needs, it is necessary to improve the support system. Based on the engineering background of the Pinggang mining roadway, this work studies the migration law of overlying strata in deep goaf by theoretical analysis and numerical simulation. The results show that the vertical stress and plastic failure range of the surrounding rock in front of the working face increase with the advance distance and when the working face advances to the first square, reaching the maximum. A stope spatial model considering the influence of horizontal stress is established. Combined with the theory of key strata, the stress transfer characteristics of overlying strata are analyzed. It can be seen that 0~30 m in front of the coal wall of the working face is the influence range of advanced abutment pressure, and the dynamic mining pressure in this range has a great influence. The inclined direction of the working face, 0~20 m away from the coal wall of the roadway, is the influence range of the solid coal abutment pressure. On this basis, the “migration- transfer- control” technical system of surrounding rock in deep stope face is put forward, i.e., the stress transfer of surrounding rock is caused by overlying rock migration, and the large deformation of surrounding rock is controlled by supporting means. Based on the original support scheme of the roadway, three reinforcement schemes are designed for the roof, the sidewalls, and both the roof and sides. The deformation control effect of the reinforcement scheme is far greater than that of the single factor, and the field monitoring effect is good. The research results aim to provide theoretical and technical support for the deformation control of mining roadways in the deep mining process. |
| first_indexed | 2024-03-11T03:57:40Z |
| format | Article |
| id | doaj.art-6cd4d4e60b4b4b00b304531a5ef67e1b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T03:57:40Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-6cd4d4e60b4b4b00b304531a5ef67e1b2023-11-18T00:23:59ZengMDPI AGApplied Sciences2076-34172023-05-011310632510.3390/app13106325“Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its ApplicationTao Qin0Binyang Duan1Yanwei Duan2Yaozu Ni3Xiangang Hou4Pingyun Ma5Yue Yang6Key Laboratory of Mining Engineering of Heilongjiang Province College, Heilongjiang University of Science and Technology, Harbin 150022, ChinaKey Laboratory of Mining Engineering of Heilongjiang Province College, Heilongjiang University of Science and Technology, Harbin 150022, ChinaKey Laboratory of Mining Engineering of Heilongjiang Province College, Heilongjiang University of Science and Technology, Harbin 150022, ChinaKey Laboratory of Mining Engineering of Heilongjiang Province College, Heilongjiang University of Science and Technology, Harbin 150022, ChinaKey Laboratory of Mining Engineering of Heilongjiang Province College, Heilongjiang University of Science and Technology, Harbin 150022, ChinaKey Laboratory of Mining Engineering of Heilongjiang Province College, Heilongjiang University of Science and Technology, Harbin 150022, ChinaCollege of Civil Engineering, Heilongjiang University of Science and Technology, Harbin 150022, ChinaAfter coal mining enters the deep, the mining environment changes dramatically, and engineering disasters become increasingly prominent, which are mostly related to rock instability and failure. As traditional support is difficult to meet production needs, it is necessary to improve the support system. Based on the engineering background of the Pinggang mining roadway, this work studies the migration law of overlying strata in deep goaf by theoretical analysis and numerical simulation. The results show that the vertical stress and plastic failure range of the surrounding rock in front of the working face increase with the advance distance and when the working face advances to the first square, reaching the maximum. A stope spatial model considering the influence of horizontal stress is established. Combined with the theory of key strata, the stress transfer characteristics of overlying strata are analyzed. It can be seen that 0~30 m in front of the coal wall of the working face is the influence range of advanced abutment pressure, and the dynamic mining pressure in this range has a great influence. The inclined direction of the working face, 0~20 m away from the coal wall of the roadway, is the influence range of the solid coal abutment pressure. On this basis, the “migration- transfer- control” technical system of surrounding rock in deep stope face is put forward, i.e., the stress transfer of surrounding rock is caused by overlying rock migration, and the large deformation of surrounding rock is controlled by supporting means. Based on the original support scheme of the roadway, three reinforcement schemes are designed for the roof, the sidewalls, and both the roof and sides. The deformation control effect of the reinforcement scheme is far greater than that of the single factor, and the field monitoring effect is good. The research results aim to provide theoretical and technical support for the deformation control of mining roadways in the deep mining process.https://www.mdpi.com/2076-3417/13/10/6325deep miningmining roadwayoverburden rock migrationstress transfersupport system |
| spellingShingle | Tao Qin Binyang Duan Yanwei Duan Yaozu Ni Xiangang Hou Pingyun Ma Yue Yang “Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its Application Applied Sciences deep mining mining roadway overburden rock migration stress transfer support system |
| title | “Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its Application |
| title_full | “Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its Application |
| title_fullStr | “Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its Application |
| title_full_unstemmed | “Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its Application |
| title_short | “Migrate-Transfer-Control” Support System of Surrounding Rock in the Deep Roadway and Its Application |
| title_sort | migrate transfer control support system of surrounding rock in the deep roadway and its application |
| topic | deep mining mining roadway overburden rock migration stress transfer support system |
| url | https://www.mdpi.com/2076-3417/13/10/6325 |
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