Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill
In order to explore the stability of overburden rock and the development height of water flowing fractured zone in roadway filling mining, based on the movement and deformation mechanism of overburden rock, the mechanical analysis of overburden stability and failure was carried out, and the mechanic...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/6661168 |
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| author | Yu Dong Yucheng Huang Jifang Du Fei Zhao |
| author_facet | Yu Dong Yucheng Huang Jifang Du Fei Zhao |
| author_sort | Yu Dong |
| collection | DOAJ |
| description | In order to explore the stability of overburden rock and the development height of water flowing fractured zone in roadway filling mining, based on the movement and deformation mechanism of overburden rock, the mechanical analysis of overburden stability and failure was carried out, and the mechanical model of main roof rock beam was established, and the ultimate span and limit deflection of rock beam fracture were deduced. Combined with the mechanical model of the main roof fractured rock, the basis for the judgment of overburden failure developing to fractured zone is given in this paper. Taking a coal mine roadway backfill under water-bearing stratum as an example, based on the equivalent mining height, the theoretical calculation and analysis are carried out on the stability of overburden rock and the height of water flowing fractured zone. The reliability of the theoretical analysis is verified compared with the empirical formula and the numerical simulation results. The results showed that the water flowing fractured zone developed to the bottom of no. 7 glutenite, with a height of 32.5 m, slightly less than the calculation result of the empirical formula. The thickness of the waterproof coal pillar was 39.8 m, which was much less than the distance from the aquifer to the coal seam and can be mined safely. |
| format | Article |
| id | doaj-art-fab97e34577443b98aa5fd7d0dc0c621 |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-fab97e34577443b98aa5fd7d0dc0c6212025-08-20T02:22:37ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/66611686661168Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented BackfillYu Dong0Yucheng Huang1Jifang Du2Fei Zhao3School of Management Science and Engineering, Shandong Technology and Business University, Yantai 264005, ChinaSchool of Resources and Safety Engineering, China University of Mining & Technology (Beijing), Beijing 100083, ChinaSchool of Management Science and Engineering, Shandong Technology and Business University, Yantai 264005, ChinaShanxi Anmei Mining Design & Engineering Co.,Ltd, Taiyuan 030032, ChinaIn order to explore the stability of overburden rock and the development height of water flowing fractured zone in roadway filling mining, based on the movement and deformation mechanism of overburden rock, the mechanical analysis of overburden stability and failure was carried out, and the mechanical model of main roof rock beam was established, and the ultimate span and limit deflection of rock beam fracture were deduced. Combined with the mechanical model of the main roof fractured rock, the basis for the judgment of overburden failure developing to fractured zone is given in this paper. Taking a coal mine roadway backfill under water-bearing stratum as an example, based on the equivalent mining height, the theoretical calculation and analysis are carried out on the stability of overburden rock and the height of water flowing fractured zone. The reliability of the theoretical analysis is verified compared with the empirical formula and the numerical simulation results. The results showed that the water flowing fractured zone developed to the bottom of no. 7 glutenite, with a height of 32.5 m, slightly less than the calculation result of the empirical formula. The thickness of the waterproof coal pillar was 39.8 m, which was much less than the distance from the aquifer to the coal seam and can be mined safely.http://dx.doi.org/10.1155/2021/6661168 |
| spellingShingle | Yu Dong Yucheng Huang Jifang Du Fei Zhao Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill Shock and Vibration |
| title | Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill |
| title_full | Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill |
| title_fullStr | Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill |
| title_full_unstemmed | Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill |
| title_short | Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill |
| title_sort | study on overburden stability and development height of water flowing fractured zone in roadway mining with cemented backfill |
| url | http://dx.doi.org/10.1155/2021/6661168 |
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