基于相对压力的煤矿通风阻力测定数据处理方法

Data processing method of coal mine ventilation resistance measurement based on relative pressure

针对采用气压计基点法获得的煤矿通风阻力测定数据误差较大、现有原始测定数据处理方法的修正过程较繁琐的问题,提出了一种基于相对压力的煤矿通风阻力测定数据处理方法。该方法首先选取煤矿某入井井口作为相对压力零点;然后计算其他测点的相对压力,并对不符合排序原则的测点相对压力进行修正;最后根据通风阻力定律计算全部巷道的风阻,并根据巷道解算风量与测定的该巷道可靠风量对比结果,对误差超过5%的巷道风阻进行修正,直至所有巷道的风量对比误差在5%以内。该方法可一次性完成原始测定数据误差的初步修正,提高了获取可靠通风基础参数的效率,对煤矿通风阻力测定数据处理工作具有一定的参考价值。

For problems of larger error of coal mine ventilation resistance measurement data acquired by barometer base-point method and cumbersome correction of existing original measurement data processing methods,a data processing method of coal mine ventilation resistance measurement based on relative pressure was proposed.In the method,apithead inlet of coal mine is selected as zero point of relative pressure firstly.Then relative pressures of other measurement points are calculated,and relative pressures of some measurement points that do not conform to sequencing principle are corrected.Finally,wind resistances of all tunnels are calculated according to ventilation resistance law,and according to comparison result between calculated wind volume and the measured reliable one of the same tunnel,wind resistances of some tunnels are corrected whose comparison errors are over 5%until the comparison errors of wind volume in all tunnels are within 5%.The method can complete initial error correction of original measurement data at one time,improve efficiency of obtaining reliable basic ventilation parameters,and has a certain reference value for data processing of coal mine ventilation resistance measurement.