Research Article
Determining the Seepage Stability of Fractured Coal Rock in the Karst Collapse Pillar
Table 2
Coal sample test parameters.
| | Sample | M-1 | M-2 | M-3 | M-4 | M-5 | M-6 | M-7 | M-8 | M-9 | M-10 |
| | Talbot n | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | | h0 (mm) | 51.2 | 49.3 | 51.8 | 49.8 | 52.0 | 52.1 | 51.9 | 51.2 | 50.9 | 50.3 | | σb (MPa) | 2.043 | 1.086 | 1.042 | 1.069 | 2.951 | 3.113 | 3.447 | 2.694 | 3.662 | 2.017 | | Critical value | −15.0 | −14.9 | −13.1 | −13.4 | −15.1 | −15.3 | −14.1 | −13.2 | −13.8 | −15.4 |
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h0 represents the initial height of the sample and σb represents the uniaxial peak compressive strength of the sample.
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