Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite
Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite
复制标题
气体压力对无烟煤超声速度和各向异性影响的实验研究
DOI：
10.1155/2019/3183816
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发表时间：
2019-08
期刊：
影响因子：
1.7
通讯作者：
Huachao Sun
中科院分区：
文献类型：
--
作者：
Bo Wang;Jialin Hao;Shengdong Liu;Fubao Zhou;Zhendong Zhang;Heng Zhang;Huachao Sun
用地震勘探方法研究含瓦斯煤流固两相介质的弹性，对防治瓦斯灾害具有重要意义。为了研究无烟煤的弹性，对无烟煤样品在不同气压下进行了超声弹性试验，分析了样品的声速和各向异性。结果表明，P波和S波的速度在走向、倾角和垂直方向上依次减小。然而，超声速度与气体压力之间存在负线性相关关系。随着气压的增加，样品的P波和S波的各向异性程度都减小，但P波的各向异性程度大于S波。此外，纵波的速度衰减和各向异性程度大于S波，说明纵波在速度及其各向异性程度上对瓦斯压力变化更为敏感。
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.
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DOI：
10.1190/1.1816460
发表时间：
2001
期刊：
Seg Technical Program Expanded Abstracts
影响因子：
--
作者：
Zhijing Wang
通讯作者：
Zhijing Wang
DOI：
--
发表时间：
2011
期刊：
Journal of China Coal Society
影响因子：
--
作者：
Yang Tao
通讯作者：
Yang Tao
影响因子：
1.7
作者：
Naj Aziz;W. Ming-li
通讯作者：
Naj Aziz;W. Ming-li
DOI：
--
发表时间：
2010
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
L. Yanbao;Cao Shugang;L. Yong;W. Jun;G. Ping;X. Jian;Bai Yanjie
通讯作者：
L. Yanbao;Cao Shugang;L. Yong;W. Jun;G. Ping;X. Jian;Bai Yanjie
影响因子：
3.3
作者：
Morcote, Anyela;Mavko, Gary;Prasad, Manika
通讯作者：
Prasad, Manika