Research Article
Study on Spontaneous Combustion Law and Prevention Technology of Abandoned Coal in Goaf of Coal Mine
Table 3
Water loss temperature and ignition temperature of experimental coal sample (temperature at the end of weight gain).
| | Coal sample test number | Sampling location and source | End point temperature of water loss (°C) | Ignition temperature (°C) |
| | No. 1 (reference) | Jiudaoling Coal Mine in Liaoning Province, layer 4# | 117.0 | 271.4 | | No. 2 (reference) | Layer 8#-1 in Changping Mine, Jinmei in Shanxi Province | 162.9 | 375.4 | | No. 3 (reference) | Layer 8-2 in Changping Mine, Jinmei in Shanxi Province | 146.5 | 354.1 | | No. 5 (layer 15#) | Layer no.15 of Duanwang Mine in Shanxi Province, 150405 working face | 154.6 | 350.0 | | No. 5 (layer 8+9#) | Layer 8+9# coal in Duanwang Mine in Shanxi Province, 090506working face | 155.5 | 336.9 | | No. 8 (layer 11#) | Layer 11# Duanwang Mine in Shanxi Province. Borehole sampling through layer | 151.0 | 326.1 | | No. 9 (layer 13#) | Layer 13# Duanwang Mine in Shanxi Province. Borehole sampling through layer | 145.0 | 328.5 | | No. 89 (layer 11# and 13# mix) | Layer 11+13, Duanwang Mine in Shanxi. Borehole sampling through layer | 179.6 | 340.7 |
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