Distribution Law and Prediction Model of Dust Concentration under Airflow Adjustment in Fully Mechanized Heading Face

Table 4

Dust concentration comparison of measured data and simulated data.

Distance (m)	5	7.5	10	12.5	15	17.5	20	22.5	25	30
Measured data (mg/m^3)	249	230	246	225	327	258	271	272	304	232
Simulated data (mg/m^3)	238	218	233	208	314	244	257	254	285	217
Error rate (%)	4.4	5.2	5.3	7.6	4.0	5.4	5.2	6.6	6.3	6.5

Note: “—” means that the air velocity is too small to be tested.