Research Article
Risk Prediction of Coal and Gas Outburst Based on Abnormal Gas Concentration in Blasting Driving Face
Table 4
Jet holes events in 11224 transportation roadway.
| | Number | Date | Shift | Number | Date | Shift | Number | Date | Shift |
| | 1 | 2017.08.10 | 3rd | 12 | 2017.9.15 | 1st | 23 | 2017.12.11 | 1st | | 2 | 2017.08.15 | 3rd | 13 | 2017.9.16 | 1st | 24 | 2017.12.13 | 1st | | 3 | 2017.08.27 | 3rd | 14 | 2017.9.23 | 3rd | 25 | 2017.12.13 | 1st | | 4 | 2017.08.27 | 3rd | 15 | 2017.9.23 | 3rd | 26 | 2017.12.14 | 1st | | 5 | 2017.09.01 | 3rd | 16 | 2017.9.23 | 1st | 27 | 2017.12.14 | 3rd | | 6 | 2017.09.08 | 3rd | 17 | 2017.10.15 | 1st | 28 | 2017.12.16 | 3rd | | 7 | 2017.09.09 | 2nd | 18 | 2017.10.25 | 1st | 29 | 2017.12.19 | 1st | | 8 | 2017.09.13 | 2nd | 19 | 2017.10.31 | 1st | 30 | 2017.12.20 | 1st | | 9 | 2017.09.13 | 1st | 20 | 2017.12.09 | 3rd | 31 | 2017.12.20 | 2nd | | 10 | 2017.09.13 | 1st | 21 | 2017.12.10 | 3rd | 32 | 2017.12.21 | 2nd | | 11 | 2017.09.14 | 1st | 22 | 2017.12.10 | 1st | — | — | — |
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