煤矿矿震传感器检验方法试验研究

针对目前国内矿震传感器检验方面的迫切需要，引进了CS18VLF低频振动系统，提出了频率误差、幅值误差及幅值线性度检验指标，使用比较法开展了新旧DLM型矿震传感器的检验试验。试验结果表明：全新矿震传感器最大频率误差和最大幅值误差的平均值分别为2.5%、5.35%，井下长期使用后的矿震传感器最大频率误差和最大幅值误差的平均值分别为3.1%、14.3%，全新矿震传感器的幅值线性度平均值为0.991，井下长期使用后的矿震传感器的幅值线性度平均值为0.961，矿震传感器在井下长期使用后存在频率、幅值测量误差增大，幅值线性度减小的问题，验证了检验方法的可行性及必要性。根据新旧矿震传感器检验试验结果，初步确定频率误差低于3.5%、幅值误差低于10%，幅值线性度高于0.97为判断DLM型矿震传感器有效的临界值。

Experimental research on seismic sensor inspection method for coal mines

In view of the urgent need for the calibration of mine seismic sensors in China, the CS18VLF vibration system was introduced, and the calibration indexes of frequency error and amplitude error and amplitude linearity were proposed. The experimental results show that the average of maximum frequency error and maximum amplitude error of the new mine seismic sensor are 2.5% and 5.35%, respectively, the average maximum frequency error and maximum amplitude error of the mine seismic sensor after long-term underground use are 3.1%,14.3%, the average of amplitude linearity of the new mine seismic sensor are 0.991, the average of amplitude linearity of long-term underground used are 0.961,the mine seismic sensor after long-term used has the problem of increased frequency and amplitude errors and decreased amplitude linearity , which verifies the feasibility of the test method. According to the verification test results of the old and new mine seismic sensors, it is preliminarily determined that the value of the frequency error is lower than 5% and the value of the amplitude error is lower than 10% and the value of amplitude linearity in higher than 0.97 as the critical values for judging whether the mine seismic sensor is effective.