Table 1 The calculated air quantity and air distribution for the designed commissioning period.
From: Analysis of distribution method of designed air quantity in coal mine ventilation—a case study
No | Location | Required air quantity (m3/s) | Cross-sectional area (m2) | Designed air velocity (m/s) |
|---|---|---|---|---|
1 | Working face | 18 | 5.4 | 3.3 |
2 | Gate developing face 1 | 7 | 10 | 0.7 |
3 | Gate developing face 2 | 7 | 12 | 0.58 |
4 | Driving face | 7 | 10 | 0.7 |
5 | District substation | 2 | 12 | 0.17 |
6 | Pump chamber | 2 | 12 | 0.17 |
7 |  + 1400 m fire-fighting materials chamber | 2 | 12 | 0.17 |
8 | 11 gas drainage roadway | 8 | 6.4 | 1.25 |
9 | 12 gas drainage roadway | 8 | 6.4 | 1.25 |
10 | Other locations | 3 | Â | Â |
11 | Total (multiplied by mine ventilation coefficient) | 77 | Â | |
