Study of response regularity of acoustic emission in gas jet orifice
In order to prevent danger of coal and gas outburst in process of rock cross-cut coal uncovering, tests and analysis on acoustic emission in rock cross-cut coal uncovering process in a coal mine were conducted based on acoustic emission monitoring system. The analysis and research results indicates...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Industry and Mine Automation
2016-05-01
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| Series: | Gong-kuang zidonghua |
| Subjects: | |
| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2016.05.009 |
| _version_ | 1797868823022403584 |
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| author | LI Guo’ai LI Zhonghui LOU Quan LI Xuelong ZHANG Weiqiang |
| author_facet | LI Guo’ai LI Zhonghui LOU Quan LI Xuelong ZHANG Weiqiang |
| author_sort | LI Guo’ai |
| collection | DOAJ |
| description | In order to prevent danger of coal and gas outburst in process of rock cross-cut coal uncovering, tests and analysis on acoustic emission in rock cross-cut coal uncovering process in a coal mine were conducted based on acoustic emission monitoring system. The analysis and research results indicates that acoustic emission intensity increases rapidly in 2-3 hours before jet orifice occurred, peak strength can reach 2-3 times higher than that no outburst danger, then dropped to lower level before jet orifice occurred. The more serious the jet orifice was, the higher the intensity of acoustic emission was. The variation range of the acoustic emission intensity could reflect severity of the jet orifice, the more obvious the jet orifice was, the more severe the changes of gas concentration was, the greater the growth rate of coal and rock acoustic emission intensity was and the higher the peak intensity was. The analysis and research results have important reference significance for monitoring and forecasting of coal outburst risk in rock cross-cut coal uncovering. |
| first_indexed | 2024-04-10T00:01:53Z |
| format | Article |
| id | doaj.art-10f9e803c10943be9b0fa677a0ac87c9 |
| institution | Directory Open Access Journal |
| issn | 1671-251X |
| language | zho |
| last_indexed | 2024-04-10T00:01:53Z |
| publishDate | 2016-05-01 |
| publisher | Editorial Department of Industry and Mine Automation |
| record_format | Article |
| series | Gong-kuang zidonghua |
| spelling | doaj.art-10f9e803c10943be9b0fa677a0ac87c92023-03-17T01:42:05ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2016-05-01425364010.13272/j.issn.1671-251x.2016.05.009Study of response regularity of acoustic emission in gas jet orificeLI Guo’aiLI ZhonghuiLOU QuanLI XuelongZHANG WeiqiangIn order to prevent danger of coal and gas outburst in process of rock cross-cut coal uncovering, tests and analysis on acoustic emission in rock cross-cut coal uncovering process in a coal mine were conducted based on acoustic emission monitoring system. The analysis and research results indicates that acoustic emission intensity increases rapidly in 2-3 hours before jet orifice occurred, peak strength can reach 2-3 times higher than that no outburst danger, then dropped to lower level before jet orifice occurred. The more serious the jet orifice was, the higher the intensity of acoustic emission was. The variation range of the acoustic emission intensity could reflect severity of the jet orifice, the more obvious the jet orifice was, the more severe the changes of gas concentration was, the greater the growth rate of coal and rock acoustic emission intensity was and the higher the peak intensity was. The analysis and research results have important reference significance for monitoring and forecasting of coal outburst risk in rock cross-cut coal uncovering.http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2016.05.009rock cross-cut coal uncoveringjet orificeacoustic emissionprecursor lawstress concentratio |
| spellingShingle | LI Guo’ai LI Zhonghui LOU Quan LI Xuelong ZHANG Weiqiang Study of response regularity of acoustic emission in gas jet orifice Gong-kuang zidonghua rock cross-cut coal uncovering jet orifice acoustic emission precursor law stress concentratio |
| title | Study of response regularity of acoustic emission in gas jet orifice |
| title_full | Study of response regularity of acoustic emission in gas jet orifice |
| title_fullStr | Study of response regularity of acoustic emission in gas jet orifice |
| title_full_unstemmed | Study of response regularity of acoustic emission in gas jet orifice |
| title_short | Study of response regularity of acoustic emission in gas jet orifice |
| title_sort | study of response regularity of acoustic emission in gas jet orifice |
| topic | rock cross-cut coal uncovering jet orifice acoustic emission precursor law stress concentratio |
| url | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2016.05.009 |
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