A Study on the Energy Condition and Quantitative Analysis of the Occurrence of a Coal and Gas Outburst

Table 2

Coal dust distribution statistics of roadway after outburst (kg).

Particle size	Distance from the outburst hole					Total
	0∼0.15 m	0.15∼0.6 m	0.6∼1.3 m	1.3∼1.8 m	1.8∼3.3 m
>10 cm	1.500	0	0	0	0	1.500
5∼10 cm	1.724	0.700	1.400	0	0	3.824
3∼5 cm	0.626	0.621	0.628	0.678	0	2.553
9 mm∼3 cm	0.665	1.565	1.065	0.565	0.135	3.995
3 mm∼9 mm	0.168	0.731	0.508	0.294	0.062	1.763
1 mm∼3 mm	0.087	0.580	0.270	0.171	0.037	1.145
0.25∼1 mm	0.119	0.809	0.414	0.264	0.053	1.659
0.2∼0.25 mm	0.026	0.257	0.119	0.090	0.015	0.507
<0.2 mm	0.074	0.501	0.303	0.221	0.049	1.148
Total	4.989	5.764	4.707	2.283	0.351	18.094