Abstract：According to the fact that it is difficult for typical microseism location(TMSL) algorithm to select a proper velocity structure and that it is not easy for joint microseism location(JMSL) algorithm that velocity structure，microseismic source coordinates and time of microseismic occurrence are associated with each other to identify unique solution，the intelligence microseism source location algorithm with hierarchical strategy(IMSHL) is suggested. Firstly，effective microseism signals are acquired by removing background noise，dividing P-wave，S-wave，correcting monitored arrival time，deleting poor microseism signals and so on；secondly，velocity structure and microseismic source coordinates are identified using particle swarm optimization(PSO) based on minimizing residual sum of squares of calculated and monitored difference of arrival time between two neighboring sensors；thirdly，analytic solution of microseism occurrence time can be gained by minimizing residual sum of squares of calculated and monitored arrival time based on the identified velocity structure and microseismic source；finally，the correction of selecting microseism signals and the accuracy of microseism source location are verified by back analysis based on the in-situ state of practical exploitation，and if necessary，source location and identification of microseism signals should be carried out for the second time. A simple example shows that convergence precision of the algorithm is improved compared with TMSL，and convergence velocity and the stability of the algorithm are also improved compared with JMSL. The correlation of coordinates of certain seismic sources and velocity for IMSHL is shown by correlation analysis，and its necessary condition and locations of several special seismic source are also provided. The analysis of the performance of IMSHL shows that，in order to further improve convergence velocity，precision and stability of solution，microseismic source should be in ranges of sensor array and close to the sensors as much as possible by proper disposal of the sensors；and the sensors should not be in the location that makes coordinates of seismic sources and velocity associated with each other. Lastly，the feasibility and advantages of IMSHL are verified by an in-situ blasting test and the applicability of several velocity structures is discussed and analyzed.
