Research Article
Optical Estimation on Pollution Level of Respirable Dust Based on Infrared Transmitting Behavior in Coalmine Fully Mechanized Working Face
Table 3
Spectral AOD versus direction of ventilation.
| m | AOD | AOD | /m | AOD | AOD | λ/μm | AOD | AOD | Positive direction | Negative direction | Positive direction | Negative direction | Positive direction | Negative direction |
| 3 | 0.52062 | 0.60375 | 11 | 0.28086 | 0.31968 | 19 | 0.20359 | 0.23151 | 4 | 0.43089 | 0.49614 | 12 | 0.23811 | 0.27075 | 20 | 0.21137 | 0.2406 | 5 | 0.33751 | 0.38509 | 13 | 0.24519 | 0.2788 | 21 | 0.23871 | 0.27215 | 6 | 0.27493 | 0.31253 | 14 | 0.21768 | 0.2472 | 22 | 0.27067 | 0.30879 | 7 | 0.21937 | 0.24891 | 15 | 0.2002 | 0.22729 | 23 | 0.26736 | 0.30463 | 8 | 0.09544 | 0.10727 | 16 | 0.20257 | 0.23017 | 24 | 0.25376 | 0.28889 | 9 | 0.40835 | 0.47070 | 17 | 0.21023 | 0.23911 | 25 | 0.23153 | 0.26354 | 10 | 0.37973 | 0.43616 | 18 | 0.20673 | 0.23511 | | | |
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