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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Main Authors: Yunpeng Li, Dequan Sun, Shankun Zhao, Kaihua Liang, Kai Cui, Huaihong Wang
Format: Article
Language:English
Published: Wiley 2021-01-01
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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AT shankunzhao investigationofpressurereliefboreholeeffectsusinginsitutestingbasedondistributedopticalfibresensingtechnology
AT kaihualiang investigationofpressurereliefboreholeeffectsusinginsitutestingbasedondistributedopticalfibresensingtechnology
AT kaicui investigationofpressurereliefboreholeeffectsusinginsitutestingbasedondistributedopticalfibresensingtechnology
AT huaihongwang investigationofpressurereliefboreholeeffectsusinginsitutestingbasedondistributedopticalfibresensingtechnology