Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas
With an increase in mining depth and production, the intensity and frequency of outburst of coal and gas have a tendency to increase. Estimating the intensity of outbursts of coal and gas plays an important role because of its relation with the risk value. In this paper, we described the semiquantit...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/185608 |
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| author | W. Nie S. J. Peng J. Xu L. R. Liu G. Wang J. B. Geng |
| author_facet | W. Nie S. J. Peng J. Xu L. R. Liu G. Wang J. B. Geng |
| author_sort | W. Nie |
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| description | With an increase in mining depth and production, the intensity and frequency of outburst of coal and gas have a tendency to increase. Estimating the intensity of outbursts of coal and gas plays an important role because of its relation with the risk value. In this paper, we described the semiquantitative relations between major parameters and intensity of outburst based on physical experiments. The results showed increment of geostress simulated by horizontal load (from 1.4, 2.4, 3.2, to 3.4 MPa) or vertical load (from 2, 3, 3.6, to 4 MPa) improved the relative intensity rate (3.763–7.403% and 1.273–7.99%); the increment of porosity (from 1.57, 2.51, 3, to 3.6%) improved the relative intensity rate from 3.8 to 13.8%; the increment of gas pressure (from 0, 0.5, 0.65, 0.72, 1, to 1.5 Mpa) induced the relative intensity rate to decrease from 38.22 to 0%; the increment of water content (from 0, 2, 4, to 8%) caused the relative intensity rate to drop from 5.425 to 0.5%. Furthermore, sensitivity and range analysis evaluates coupled factors affecting the relative intensity. In addition, the distinction with initiation of outburst of coal and gas affected by these parameters is discussed by the relative threshold of gas content rate. |
| format | Article |
| id | doaj-art-437fd3196e0b4347a4c0e5cee4d6e565 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-437fd3196e0b4347a4c0e5cee4d6e5652025-02-03T06:06:18ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/185608185608Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and GasW. Nie0S. J. Peng1J. Xu2L. R. Liu3G. Wang4J. B. Geng5State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaKey Laboratory of Ministry of Education for Mine Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266510, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaWith an increase in mining depth and production, the intensity and frequency of outburst of coal and gas have a tendency to increase. Estimating the intensity of outbursts of coal and gas plays an important role because of its relation with the risk value. In this paper, we described the semiquantitative relations between major parameters and intensity of outburst based on physical experiments. The results showed increment of geostress simulated by horizontal load (from 1.4, 2.4, 3.2, to 3.4 MPa) or vertical load (from 2, 3, 3.6, to 4 MPa) improved the relative intensity rate (3.763–7.403% and 1.273–7.99%); the increment of porosity (from 1.57, 2.51, 3, to 3.6%) improved the relative intensity rate from 3.8 to 13.8%; the increment of gas pressure (from 0, 0.5, 0.65, 0.72, 1, to 1.5 Mpa) induced the relative intensity rate to decrease from 38.22 to 0%; the increment of water content (from 0, 2, 4, to 8%) caused the relative intensity rate to drop from 5.425 to 0.5%. Furthermore, sensitivity and range analysis evaluates coupled factors affecting the relative intensity. In addition, the distinction with initiation of outburst of coal and gas affected by these parameters is discussed by the relative threshold of gas content rate.http://dx.doi.org/10.1155/2014/185608 |
| spellingShingle | W. Nie S. J. Peng J. Xu L. R. Liu G. Wang J. B. Geng Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas The Scientific World Journal |
| title | Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas |
| title_full | Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas |
| title_fullStr | Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas |
| title_full_unstemmed | Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas |
| title_short | Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas |
| title_sort | experimental analyses of the major parameters affecting the intensity of outbursts of coal and gas |
| url | http://dx.doi.org/10.1155/2014/185608 |
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