Research Article
Experimental Research on Mechanical Properties of High-Temperature Sandstone with Different Cooling Methods
Table 2
Longitudinal wave velocity.
| | | Wave velocity before heating (km/s) | Average wave velocity beforeheating (km/s) | Wave velocity afterheating (km/s) | Average wave velocity after heating (km/s) | (%) |
| | C | 3.261 | 3.258 | — | — | — | | 3.257 | — | | 3.256 | — |
| | N | 3.271 | 3.273 | 1.847 | 1.848 | 43.54 | | 3.274 | 1.847 | | 3.274 | 1.85 |
| | W | 3.168 | 3.169 | 1.437 | 1.436 | 54.69 | | 3.171 | 1.438 | | 3.168 | 1.433 |
| | R | 3.243 | 3.242 | 1.224 | 1.221 | 62.34 | | 3.243 | 1.2 | | 3.240 | 1.119 |
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