A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar Structure
The slope-pillar structure is defined as an artificial construction shaped by a surface highwall mining and an underground longwall mining. In order to study the impact of stress variations (induced by the longwall-mining operations) on the stability of a slope-pillar structure, No. 30101-1 working...
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| Main Authors: | , , , , , |
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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/10.1155/2021/9994904 |
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| author | Wenyong Bai Jie Zhang Bin Wang Jianchen Zhang Hongru Li Sen Yang |
| author_facet | Wenyong Bai Jie Zhang Bin Wang Jianchen Zhang Hongru Li Sen Yang |
| author_sort | Wenyong Bai |
| collection | DOAJ |
| description | The slope-pillar structure is defined as an artificial construction shaped by a surface highwall mining and an underground longwall mining. In order to study the impact of stress variations (induced by the longwall-mining operations) on the stability of a slope-pillar structure, No. 30101-1 working face of Nanliang Coal Mine was selected as the study subject. A series of analysis including physical similar simulation test and the theoretical analysis were conducted to study the movement pattern of the overlying strata in the working face of the slope and the loading and the stability of the pillar column revealing the mechanism of dynamic load instability of nonuniformly distributed load “slope pillar.” A “slope-pillar” reverse sliding structural model was proposed along with a newly established “slope-pillar” structural mechanical model and a formula to calculate the boundary width of the protection for the pillar under the extreme balance conditions. According to the study, the width of the protective pillar is designed at 20 m, and the roadway deformation during the working face and the stability of the pillar can satisfy the safety requirement concerning the working face, which further validates the theoretic deduction formula. |
| format | Article |
| id | doaj-art-bb8d446813824145ac623717f8cd2a6c |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-bb8d446813824145ac623717f8cd2a6c2025-02-03T05:52:30ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/99949049994904A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar StructureWenyong Bai0Jie Zhang1Bin Wang2Jianchen Zhang3Hongru Li4Sen Yang5School of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, ChinaSchool of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, ChinaSchool of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, ChinaSchool of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, ChinaSchool of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, ChinaSchool of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, ChinaThe slope-pillar structure is defined as an artificial construction shaped by a surface highwall mining and an underground longwall mining. In order to study the impact of stress variations (induced by the longwall-mining operations) on the stability of a slope-pillar structure, No. 30101-1 working face of Nanliang Coal Mine was selected as the study subject. A series of analysis including physical similar simulation test and the theoretical analysis were conducted to study the movement pattern of the overlying strata in the working face of the slope and the loading and the stability of the pillar column revealing the mechanism of dynamic load instability of nonuniformly distributed load “slope pillar.” A “slope-pillar” reverse sliding structural model was proposed along with a newly established “slope-pillar” structural mechanical model and a formula to calculate the boundary width of the protection for the pillar under the extreme balance conditions. According to the study, the width of the protective pillar is designed at 20 m, and the roadway deformation during the working face and the stability of the pillar can satisfy the safety requirement concerning the working face, which further validates the theoretic deduction formula.http://dx.doi.org/10.1155/2021/9994904 |
| spellingShingle | Wenyong Bai Jie Zhang Bin Wang Jianchen Zhang Hongru Li Sen Yang A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar Structure Shock and Vibration |
| title | A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar Structure |
| title_full | A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar Structure |
| title_fullStr | A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar Structure |
| title_full_unstemmed | A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar Structure |
| title_short | A Study on the Impact of Longwall-Mining Operation on the Stability of a Slope-Pillar Structure |
| title_sort | study on the impact of longwall mining operation on the stability of a slope pillar structure |
| url | http://dx.doi.org/10.1155/2021/9994904 |
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