Microseism event positioning method and device based on automatic scanning of longitudinal and transverse wave energy

The invention relates to a microseism event positioning method and device based on automatic scanning of longitudinal and transverse wave energy. The method includes the steps that microseism event recognition is carried out on underground monitoring data; a microseism event travel-time table of a searched area is built; sliding scanning is carried out on a recognized microseism event according to the microseism event travel-time table, and accordingly diffraction stacked energy is obtained; sliding scanning is carried out on the polarization direction of the recognized microseism event according to the microseism event travel-time table, so information of the polarization direction is obtained; an objective function of microseism event direction consistence and scanned and stacked energy maximization is solved according to the diffraction stacked energy and the information of the polarization direction, and accordingly an optimal solution of the objective function is obtained. The optimal solution represents the position where direction stability and consistence are best and longitudinal and transverse wave scanned energy is strongest in the direction and the position is where the microseism event happens.