爆破振动传感器固定方式对测振结果的影响

发布时间：2018-05-28 19:48

本文选题：爆破振动 + 频率　；参考：《科学技术与工程》2017年35期

【摘要】：爆破振动传感器的安装定位对于准确测量爆破振动信号十分重要,目前常见的几种爆破振动传感器固定方式都很难精确监测到对应爆破的震动或结构动力响应的值。针对实际爆破测振工作中几种常见的固定方式,在实验室内以及现场爆破环境下进行实验测试对比,发现振动信号本身的频率以及被测结构的固有频率会对测量结果造成影响。低频振动信号的测量结果值影响不大,而高频信号会对测振结果造成较大误差。传感器固定方式对各个分量的测量值影响不一,尤其是水平分量的影响差异较为明显。石膏固定传感器时,黏结层厚度越小,测到的数据越准确;但考虑传感器固定的可靠性,为使其不脱落,厚度应不低于2 mm。
[Abstract]:The installation and location of blasting vibration sensor is very important for accurate measurement of blasting vibration signal. At present, it is difficult to accurately monitor the vibration or structural dynamic response of blasting corresponding to several common fixed blasting vibration sensors. Aiming at several common fixed methods in actual blasting vibration measurement, the experimental results are compared in laboratory and in situ blasting environment. It is found that the frequency of vibration signal itself and the natural frequency of the structure under test will have an effect on the measurement results. The measurement results of low frequency vibration signals have little influence, but the high frequency signals will cause great errors to the vibration measurement results. The sensor fixed mode has different influence on the measurement value of each component, especially the influence of horizontal component. The smaller the thickness of the bonding layer is, the more accurate the measured data is, but considering the reliability of the sensor, the thickness should not be less than 2 mm in order to keep the sensor from falling off.
【作者单位】：冶金工业过程系统科学湖北省重点实验室(武汉科技大学);武汉科技大学理学院;中铁港航-武科大爆破技术研究中心;
【基金】：武汉科技大学冶金工业过程系统科学湖北省重点实验室开放课题基金资助项目(Y201515);武汉科技大学青年科技骨干培育计划项目(2016xz019)资助
【分类号】：TD235

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