Effective wave identification and interference analysis of the seismic reflection method in mines

Through discussion of the time-distance curve characteristics of the direct wave and from the front, side and rear of the reflection waves of the seismic reflection method for advanced exploration in mines, and analysis of several major interference waves in mines, the differences in time-distance curve, frequency, apparent velocity between the effective wave and interference wave in the seismic reflection method for advanced exploration are obtained. According to the differences, the effective wave is extracted and the interference wave is filtered and the system’s precision and accuracy is improved. Supported by the National Natural Science Foundation of China(50375026); the National Basic Research Program of China (2005cb221500); the National Key Technology R&D Program (2006BAK03B01); the National Natural Science Foundation Key Program (50534080)