Resistance Measurement and Resistance Reduction Optimization Measures of Coal Mine Ventilation System
Taking the ventilation system of Dengfukang Coal Mine in Guxian County as an example,the resistance of the ventilation system was measured comprehensively,the problems of the ventilation system were summarized,and the targeted optimization measures were formulated according to the actual ventilation situation of the coal mine.According to the analysis of the ventilation effect after the transformation,it can be seen that the ventilation resistance was reduced to about 1 400 Pa,the ventilation resistance in the return air section was reduced to about 720 Pa,the exhaust air volume of the whole ventilation main fan was 60 m3/s,the effective air volume reached 56 m3/s,and the overall air leakage rate was reduced to 3%,which proved that the optimization and reconstruction measures achieved good results.
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