Ventilation Resistance Measurement of Baode Mine and Results Analysis

Based on the base point measuring method of the barometer, the layout alternatives and the calculation theoretical basis of the ventilation resistance me asurement in Baode Mine were introduced.With the calculation and analysis on the site measured data, the results showed that the ventilation resistance in the air inco me section, the air applied section and the air retuning section was individually taken 30.21%，24.97% and 44.82% of the total resistance.The equivalence hole of the m ine ventilation shaft was 10.33 m2 and the total air resistance was 0.013 with N.s2/m8.The natural air pressure of the ventilation system was 45 Pa and the mine ventila tion difficult degree was easy.According to the high resistance in the air retuning section, based on the cause analysis on the site actual conditions, the rational proposal was provided.The relative error of the ventilation resistance measured on the main measuring route was 1.94% and the accuracy could meet the requirement.The mea sured results could be the basis to the reconstruction, optimization and management of the mine ventilation system.