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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