1.Baiping Coal Industry Company Limited, Zhengzhou Coal Group (Henan), Dengfeng , China; 2.Mine Safety Branch, China Coal Research Institute, Beijing , China;3.National Key Lab of CoalMining and Clean Utilization,Beijing , China

为了降低煤矿主要通风机性能测试过程中风量测试误差，基于适用于准定常流动的伯努利方程，从理论上对静压差法与动压法的测试精度进行了对比分析。以白坪煤业公司东翼风井主要通风机为试验对象，分别利用静压差法与动压法对主要通风机风量进行了实测分析。结果表明：2种方法现场实测风量结果的相对误差均小于6%，准确度均能满足现场生产需求，但静压差法中局部阻力损失无法确定及测点布置不均匀会产生较大的测试误差，其准确度小于动压法，因此从精准化角度考虑，应优先采用动压差法测试通风机风量。

In order to reduce the air flow test error of the mine ventilator during the performance test process of the mine main ventilator in the coal mine, based on Bernoulli equation suitable for the quasi-steady flow, from the theory, a comparison and analysis was conducted on the test precision between the static pressure difference method and the dynamic pressure method. Taking the main ventilator of East Ventilation Mine in Baiping Coal Company as the experiment object, the static pressure difference method and the dynamic pressure method was individually applied to the measurement of the air flow of the main ventilator and the comparison analysis was conducted on the measured results. The study showed that the site measured air flow results of the two methods had a relative error both less than 6%,the accuracy could meet the requirements of the site production,but in the static pressure difference method, the local resistance loss could not be determined and the uneven layout of the measuring points would cause big measurement error. The accuracy of the calculation results by the static pressure difference method was less than the dynamic pressure method.Therefore,from the consideration of the precision, the dynamic pressure method should have the first priority to be applied to measure the air flow of the ventilator.