Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine
Taking Huipodi coal mine as the engineering background, the asymmetric deformation mechanism of the mining roadway under the island coal pillar was studied by theoretical analysis, numerical simulation and field measurement, and the corresponding floor heave prevention and control measures were prop...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2020-12-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2020.06.006 |
| _version_ | 1828095465671884800 |
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| author | Zhao Hongbao Liu Yihong Cheng Hui Li Jinyu Xu Jianfeng Wang Yikuo |
| author_facet | Zhao Hongbao Liu Yihong Cheng Hui Li Jinyu Xu Jianfeng Wang Yikuo |
| author_sort | Zhao Hongbao |
| collection | DOAJ |
| description | Taking Huipodi coal mine as the engineering background, the asymmetric deformation mechanism of the mining roadway under the island coal pillar was studied by theoretical analysis, numerical simulation and field measurement, and the corresponding floor heave prevention and control measures were proposed.The results show that the rock mass below the island coal pillar has the characteristics of zoning failure and is mainly shear failure, while the rock mass below the mined area is mainly tensile failure, and the rock mass failure morphology is inverted trapezoid.Roadway 11-1021 is located at the junction of shear failure and tensile failure rock mass, which results in different degrees of damage and damage of the surrounding rock on both sides of the roadway, so the roadway exhibits asymmetric deformation characteristics, that is, the rock of roadway near the coal pillar side has a large internal stress and a small amount of deformation, while the stress near the goaf side rock is small and the floor heave is large.Based on the stress and deformation distribution characteristics of the surrounding rock on both sides of the roadway, a floor heave prevention and control technology based on the idea of anti-binding is put forward and verified on site.The results show that when the roadway is not affected by the mining, the floor heave volume of the area treated by the floor heave prevention measures is greatly reduced, and the drum speed tends to be stable with time; when the roadway is affected by the mining, the amount of floor heave in the treatment area of the control measures was reduced by nearly 1/2, meeting the production requirements. |
| first_indexed | 2024-04-11T07:13:59Z |
| format | Article |
| id | doaj.art-f7c5af1c77284d6b910a42556491d81f |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-11T07:13:59Z |
| publishDate | 2020-12-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-f7c5af1c77284d6b910a42556491d81f2022-12-22T04:38:05ZengEmergency Management Press矿业科学学报2096-21932020-12-015663864710.19606/j.cnki.jmst.2020.06.00620200606Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal MineZhao Hongbao0Liu Yihong1Cheng Hui2Li Jinyu3Xu Jianfeng4Wang Yikuo5School of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaTaking Huipodi coal mine as the engineering background, the asymmetric deformation mechanism of the mining roadway under the island coal pillar was studied by theoretical analysis, numerical simulation and field measurement, and the corresponding floor heave prevention and control measures were proposed.The results show that the rock mass below the island coal pillar has the characteristics of zoning failure and is mainly shear failure, while the rock mass below the mined area is mainly tensile failure, and the rock mass failure morphology is inverted trapezoid.Roadway 11-1021 is located at the junction of shear failure and tensile failure rock mass, which results in different degrees of damage and damage of the surrounding rock on both sides of the roadway, so the roadway exhibits asymmetric deformation characteristics, that is, the rock of roadway near the coal pillar side has a large internal stress and a small amount of deformation, while the stress near the goaf side rock is small and the floor heave is large.Based on the stress and deformation distribution characteristics of the surrounding rock on both sides of the roadway, a floor heave prevention and control technology based on the idea of anti-binding is put forward and verified on site.The results show that when the roadway is not affected by the mining, the floor heave volume of the area treated by the floor heave prevention measures is greatly reduced, and the drum speed tends to be stable with time; when the roadway is affected by the mining, the amount of floor heave in the treatment area of the control measures was reduced by nearly 1/2, meeting the production requirements.http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2020.06.006island coal pillarroadwayasymmetrical bottom drumpressure relief combined with pressure resistance |
| spellingShingle | Zhao Hongbao Liu Yihong Cheng Hui Li Jinyu Xu Jianfeng Wang Yikuo Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine 矿业科学学报 island coal pillar roadway asymmetrical bottom drum pressure relief combined with pressure resistance |
| title | Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine |
| title_full | Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine |
| title_fullStr | Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine |
| title_full_unstemmed | Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine |
| title_short | Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine |
| title_sort | mechanism and prevention measures of asymmetric floor heave in mining roadway of huipodi coal mine |
| topic | island coal pillar roadway asymmetrical bottom drum pressure relief combined with pressure resistance |
| url | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2020.06.006 |
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