Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite
To research the elasticity of gas-bearing coal fluid-solid two-phase medium with seismic exploration method is critical to the prevention of gas disasters. To investigate the elasticity, the ultrasonic elastic test of anthracite samples under different gas pressures was carried out and the ultrasoni...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2019/3183816 |
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| author | Bo Wang Jialin Hao Shengdong Liu Fubao Zhou Zhendong Zhang Heng Zhang Huachao Sun |
| author_facet | Bo Wang Jialin Hao Shengdong Liu Fubao Zhou Zhendong Zhang Heng Zhang Huachao Sun |
| author_sort | Bo Wang |
| collection | DOAJ |
| description | To research the elasticity of gas-bearing coal fluid-solid two-phase medium with seismic exploration method is critical to the prevention of gas disasters. To investigate the elasticity, the ultrasonic elastic test of anthracite samples under different gas pressures was carried out and the ultrasonic velocity and anisotropy of the samples were analyzed in this study. The results show that the velocities (P- and S-waves) decrease in turn in the strike, dip, and vertical directions. However, a negative linear correlation is proved to exist between ultrasonic velocity and gas pressure. With the increase of gas pressure, the anisotropy degree of both the P-wave and the S-wave of the samples decreases but the declining degree of the P-wave is greater than that of the S-wave. In addition, the decrease in velocity and the anisotropy degree of the P-wave is greater than that of the S-wave, indicating that the P-wave is more sensitive to gas pressure changes in terms of velocity and its anisotropy degree. |
| format | Article |
| id | doaj-art-be4e31fbc20d46b8a5faba4ff53b9170 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-be4e31fbc20d46b8a5faba4ff53b91702025-02-03T01:09:27ZengWileyGeofluids1468-81151468-81232019-01-01201910.1155/2019/31838163183816Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of AnthraciteBo Wang0Jialin Hao1Shengdong Liu2Fubao Zhou3Zhendong Zhang4Heng Zhang5Huachao Sun6State Key Laboratory for Geomechanics and Deep Underground Engineering and School of Resource and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering and School of Resource and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering and School of Resource and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaSchool of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering and School of Resource and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering and School of Resource and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering and School of Resource and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaTo research the elasticity of gas-bearing coal fluid-solid two-phase medium with seismic exploration method is critical to the prevention of gas disasters. To investigate the elasticity, the ultrasonic elastic test of anthracite samples under different gas pressures was carried out and the ultrasonic velocity and anisotropy of the samples were analyzed in this study. The results show that the velocities (P- and S-waves) decrease in turn in the strike, dip, and vertical directions. However, a negative linear correlation is proved to exist between ultrasonic velocity and gas pressure. With the increase of gas pressure, the anisotropy degree of both the P-wave and the S-wave of the samples decreases but the declining degree of the P-wave is greater than that of the S-wave. In addition, the decrease in velocity and the anisotropy degree of the P-wave is greater than that of the S-wave, indicating that the P-wave is more sensitive to gas pressure changes in terms of velocity and its anisotropy degree.http://dx.doi.org/10.1155/2019/3183816 |
| spellingShingle | Bo Wang Jialin Hao Shengdong Liu Fubao Zhou Zhendong Zhang Heng Zhang Huachao Sun Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite Geofluids |
| title | Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite |
| title_full | Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite |
| title_fullStr | Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite |
| title_full_unstemmed | Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite |
| title_short | Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite |
| title_sort | experimental study on the effect of gas pressure on ultrasonic velocity and anisotropy of anthracite |
| url | http://dx.doi.org/10.1155/2019/3183816 |
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