Research Article
Study on the Mathematical Model and Propagation Characteristics of AE Waveform Signals during Rock Fracture
Table 1
Composition and corresponding contents of the granite.
| | Composition | Content (%) | Features and structure | Particle size (mm) | Remarks |
| | Potash feldspar | 35∼40 | Granular | 2–8 | Slight kaolinization and sericitization; most of them are altered along the twin crystal lattices. | | Plagioclase | 25∼30 | Visible double crystal and ring band structure | 0.5–3 | Different degrees of kaolinization and sericitization; a few sericites are uncovered. | | Quartz | 30∼35 | Semiautomorphic to granular | 1.5–8 | — | | Biotite | 3∼5 | Flake | — | — | | Amphibole | 3∼5 | Long columnar | — | — |
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