Coal and Gangue Underground Pneumatic Separation Effect Evaluation Influenced by Different Airflow Directions

Table 7

Experimental and calculated results of separation effect.

Experiment number	Experiment value (m)	Calculated value (m)	Error (%)	Experiment value (m)	Calculated value (m)	Error (%)
	and are in the same direction			and are in opposite direction
1	2.21	2.33	5.15	3.05	3.16	3.48
2	1.14	1.21	5.78	2.2	2.37	7.17
3	0.78	0.92	15.2	2.05	2.21	7.23
4	1.08	1.23	12.2	2.15	2.36	8.89
5	0.65	0.71	8.45	1.48	1.69	12.42
6	0.42	0.49	14.3	1.25	1.43	12.58
7	0.98	1.14	14.03	1.85	2.07	10.62
8	0.37	0.44	15.9	1.55	1.74	10.92
9	0.28	0.33	15.2	1.40	1.56	10.26