Research Article
A New Method for Predicting Coal and Gas Outbursts
Table 7
Test of initial velocity q of gas emission.
| | Site | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| | connection roadway at the 1800 m level | 3.2 | 2.3 | 0.1 | 0.2 | 0.2 | 0 | 0.1 | 0 | — | | connection roadway at the 1800 m level | 0.2 | 0.2 | 2 | 1.2 | 0.2 | 0.2 | — | — | — | | connection roadway at the 1800 m level | 1.2 | 3.2 | — | — | — | — | — | — | — | | connection roadway at the 1800 m level | 2.6 | 0.8 | 1.2 | 1 | 1 | 2 | — | — | — | | Transportation roadway in the 121901 working face | — | 1.2 | — | — | 3.4 | — | — | — | — | | Transportation roadway in the 121901 working face | 0.2 | 1 | — | — | — | — | — | — | — |
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