Research Article
Experimental Study on the Effect of Gas Pressure on Ultrasonic Velocity and Anisotropy of Anthracite
Table 1
Basic parameters of coal samples.
| Sample ID | Size () (mm3) | (g/mm3) | | | | | |
| #8-A | | 1.62 | 2.00 | 10.32 | 10.29 | 33.73 | 1.42 | #8-B | | 1.60 | 1.98 | 10.37 | 10.25 | 33.69 | 1.41 | #8-C | | 1.61 | 1.99 | 10.37 | 10.18 | 33.71 | 1.42 | #8-D | | 1.63 | 2.01 | 10.25 | 10.35 | 33.77 | 1.45 | #8-E | | 1.59 | 1.98 | 10.41 | 10.20 | 33.67 | 1.40 |
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