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Identification and Location Method of Microseismic Event Based on Improved STA/LTA Algorithm and Four-Cell-Square-Array in Plane Algorithm

机译:基于改进STA / LTA算法和平面四单元正方形阵列的微震事件识别与定位方法

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摘要

The key issue of microseismic (MS) monitoring technology is to detect MS events and accurately locate the MS source. On the basis of the traditional short-term average/long-term average (STA/LTA) algorithm, a new characteristic function has been proposed that can reflect the signal energy and dispersion. The results reveal that the improved method can accurately pick up the first arrival of MS events. A new monitoring network of the four-cell-square-array in plane algorithm is proposed, which can overcome the ill-conditioned problem of the objective equation. Taking into account the actual project, we designed the monitoring arrangement scheme for the surrounding rock around the underground cavern. The improved MS monitoring scheme can envelop the front of the cave and the dome and floor areas of the working face.
机译:微地震(MS)监视技术的关键问题是检测MS事件并准确定位MS源。在传统的短期平均/长期平均(STA / LTA)算法的基础上,提出了一种新的能够反映信号能量和色散的特征函数。结果表明,改进的方法可以准确地识别出MS事件的首次到达。提出了一种新的平面四单元方阵监测网络,可以克服目标方程的病态问题。考虑到实际工程,我们设计了地下洞室围岩的监测布置方案。改进的MS监控方案可以包围洞穴的前部以及工作面的穹顶和地面区域。

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