Mine micro-quake signal P wave first arrival moment joint pickup method

The invention discloses a mine micro-quake signal P wave first arrival moment joint pickup method and mainly solves the technical problems that a single PAI-K and AIC method is high in pickup precision but is unstable in pickup of low signal to noise ratio, spike, tail shock and pure noise signals. The method comprises the following steps: extracting mine micro-quake signal waveform data; carrying out maximum kurtosis value arrival time (K1) pickup; carrying out minimum self-correlation value arrival time (K2) pickup; and judging whether | k1-k2 | is larger than a threshold value L, if so, abandoning the micro-quake signals, or otherwise, outputting P wave arrival time k=k2. Through PAI-K_AIC joint identification, interference of low signal to noise ratio, spike, tail shock and pure noise signals is effectively eliminated, mistake pickup rate is greatly reduced, and P wave pickup stability is enhanced. The method has the advantages of simple processing, high applicability and high accuracy and the like.