基于三分量P-S波形的岩体声发射源定位算法

Algorithm for Source Localization of Rock-mass Acoustic Emission Based on Three-component P-S Waveform Data

依据P、S波的到达时差和三分量P波初动波形可实现单探头源定位。P、S波到达时差的大小与源距离成正比;三分量P波初动的偏振分析可以追踪传播方向。给出了采用三分量法进行声发射源定位的处理步骤和算法,确定了计算声发射事件相对级的公式,并对有关问题进行了讨论。

The arriving time difference between P- wave and S - wave and the first motion of the P- wave are the bases of source localization for single monitor. The arriving time difference is proportional to the source distance; the propagation direction can be tracked by polarization analyzing of the first motion of the P - wave. This paper offers the processing steps and the algorithm for source localization of rock- mass acoustic emission event by three - component method, determines the formula of calculating the relative levels of acoustic emission events and discusses other related problems.