Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology
Borehole pressure relief method is one of the most effective ways of rock burst prevention in coal mines. The measured results of borehole pressure relief at no. 8939 longwall face in Xinzhouyao coal mine, China, are presented here. The analyses identify the pressure relief magnitudes in coal mass a...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/8847500 |
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| author | Yunpeng Li Dequan Sun Shankun Zhao Kaihua Liang Kai Cui Huaihong Wang |
| author_facet | Yunpeng Li Dequan Sun Shankun Zhao Kaihua Liang Kai Cui Huaihong Wang |
| author_sort | Yunpeng Li |
| collection | DOAJ |
| description | Borehole pressure relief method is one of the most effective ways of rock burst prevention in coal mines. The measured results of borehole pressure relief at no. 8939 longwall face in Xinzhouyao coal mine, China, are presented here. The analyses identify the pressure relief magnitudes in coal mass around the boreholes with different diameters, spacing, and drilling time. This research has established that the best pressure relief of the rib coal can be achieved by using φ108 mm borehole with 0.7 m interval after 288 hours. The strain relief is acceptable after 288–360 hours of drilling, while the best result is achieved after 432 hours. It is also the first time to monitor the borehole pressure relief in a coal mine on-site using Brillouin optical time domain reflectometer (BOTDR) distributed fibre-optic sensing. The method implemented in this research provides new ways to improve stress relief design and minimize the rock burst occurrence for mine practitioners. |
| format | Article |
| id | doaj-art-f16927aeec6d4e60a7ea0a8ee56e2b85 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-f16927aeec6d4e60a7ea0a8ee56e2b852025-02-03T05:57:50ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/88475008847500Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing TechnologyYunpeng Li0Dequan Sun1Shankun Zhao2Kaihua Liang3Kai Cui4Huaihong Wang5China Coal Research Institute (CCRI), Beijing 100013, ChinaEngineering Laboratory of Deep Mine Rockburst Disaster Assessment, Jinan 250100, ChinaMine Safety Technology Branch, China Coal Research Institute (CCTEG), Beijing 100013, ChinaEngineering Laboratory of Deep Mine Rockburst Disaster Assessment, Jinan 250100, ChinaEngineering Laboratory of Deep Mine Rockburst Disaster Assessment, Jinan 250100, ChinaEngineering Laboratory of Deep Mine Rockburst Disaster Assessment, Jinan 250100, ChinaBorehole pressure relief method is one of the most effective ways of rock burst prevention in coal mines. The measured results of borehole pressure relief at no. 8939 longwall face in Xinzhouyao coal mine, China, are presented here. The analyses identify the pressure relief magnitudes in coal mass around the boreholes with different diameters, spacing, and drilling time. This research has established that the best pressure relief of the rib coal can be achieved by using φ108 mm borehole with 0.7 m interval after 288 hours. The strain relief is acceptable after 288–360 hours of drilling, while the best result is achieved after 432 hours. It is also the first time to monitor the borehole pressure relief in a coal mine on-site using Brillouin optical time domain reflectometer (BOTDR) distributed fibre-optic sensing. The method implemented in this research provides new ways to improve stress relief design and minimize the rock burst occurrence for mine practitioners.http://dx.doi.org/10.1155/2021/8847500 |
| spellingShingle | Yunpeng Li Dequan Sun Shankun Zhao Kaihua Liang Kai Cui Huaihong Wang Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology Advances in Civil Engineering |
| title | Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology |
| title_full | Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology |
| title_fullStr | Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology |
| title_full_unstemmed | Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology |
| title_short | Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology |
| title_sort | investigation of pressure relief borehole effects using in situ testing based on distributed optical fibre sensing technology |
| url | http://dx.doi.org/10.1155/2021/8847500 |
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