Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam
Aiming at the problem of large deformation of surrounding rock and difficulty of control gob-side entry driving in deep coal seam, taking the setting of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam as the engineering background, the reasonable range of narrow coal...
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2024-12-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2024901 |
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| author | TANG Dongxu ZHAO Wenguang ZHANG Junwen BAN Dingcheng |
| author_facet | TANG Dongxu ZHAO Wenguang ZHANG Junwen BAN Dingcheng |
| author_sort | TANG Dongxu |
| collection | DOAJ |
| description | Aiming at the problem of large deformation of surrounding rock and difficulty of control gob-side entry driving in deep coal seam, taking the setting of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam as the engineering background, the reasonable range of narrow coal pillar width is calculated by combining theoretical analysis, numerical simulation and field test based on the limit equilibrium theory. The distribution and evolution of vertical stress and elastic energy density in narrow coal pillar and solid coal are analyzed by constructing numerical models of different narrow coal pillar widths and roadway driving widths. The results show that when the minimum width with narrow coal pillar is 5.04m and the width of roadway is 5.4m and 6.0m, the maximum width of coal pillar is 6.8m and 6.2m, respectively. The narrow coal pillar with reduced width still has a good bearing capacity and is subjected to low stress and low energy level, can effectively avoid large deformation of roadway and reduce the bump risk. |
| format | Article |
| id | doaj-art-f21ce3401017499295a102117119d938 |
| institution | Kabale University |
| issn | 2096-2193 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj-art-f21ce3401017499295a102117119d9382025-01-14T08:46:55ZengEmergency Management Press矿业科学学报2096-21932024-12-019692193110.19606/j.cnki.jmst.2024901kykxxb-9-6-921Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seamTANG Dongxu0ZHAO Wenguang1ZHANG Junwen2BAN Dingcheng3Zhongtian Hechuang Energy Co., Ltd., Ordos Inner Mongolia 017200, ChinaWulanmulun Coal Mine, CHN Energy Shendong Coal Group, Ordos Inner Mongolia 017205, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaPanzhou Energy Bureau Data Center, Liupanshui Guizhou 553500, ChinaAiming at the problem of large deformation of surrounding rock and difficulty of control gob-side entry driving in deep coal seam, taking the setting of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam as the engineering background, the reasonable range of narrow coal pillar width is calculated by combining theoretical analysis, numerical simulation and field test based on the limit equilibrium theory. The distribution and evolution of vertical stress and elastic energy density in narrow coal pillar and solid coal are analyzed by constructing numerical models of different narrow coal pillar widths and roadway driving widths. The results show that when the minimum width with narrow coal pillar is 5.04m and the width of roadway is 5.4m and 6.0m, the maximum width of coal pillar is 6.8m and 6.2m, respectively. The narrow coal pillar with reduced width still has a good bearing capacity and is subjected to low stress and low energy level, can effectively avoid large deformation of roadway and reduce the bump risk.http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2024901deep buried coal seamgob-side entry drivingnarrow coal pillarreasonable widthcontrol technology |
| spellingShingle | TANG Dongxu ZHAO Wenguang ZHANG Junwen BAN Dingcheng Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam 矿业科学学报 deep buried coal seam gob-side entry driving narrow coal pillar reasonable width control technology |
| title | Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam |
| title_full | Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam |
| title_fullStr | Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam |
| title_full_unstemmed | Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam |
| title_short | Reasonable width and control technology of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam |
| title_sort | reasonable width and control technology of narrow coal pillar in gob side entry driving in deep buried bump prone coal seam |
| topic | deep buried coal seam gob-side entry driving narrow coal pillar reasonable width control technology |
| url | http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2024901 |
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