Optical Estimation on Pollution Level of Respirable Dust Based on Infrared Transmitting Behavior in Coalmine Fully Mechanized Working Face

Table 4

Dust concentration distribution along the working face.

Distance/m	Dust concentration/(g/m^3)
	0.5 m	1.5 m	2.5 m
1	0.24021	0.16605	0.06150
5	0.74450	0.72991	0.12454
10	0.93809	0.88750	0.19890
15	0.51265	0.61281	0.24133
20	0.41177	0.48878	0.29447
25	0.32211	0.35261	0.32579
30	0.33073	0.39576	0.33696
35	0.33935	0.43890	0.34812
40	0.32293	0.34323	0.28529
45	0.31482	0.33517	0.28121
50	0.30671	0.32711	0.27713
60	0.29748	0.31686	0.27264
70	0.28825	0.30661	0.26816
80	0.30564	0.32971	0.26749
90	0.32303	0.35282	0.26683
100	0.34042	0.37592	0.26617