DETECTING GEOLOGICAL HAZARD IN COAL MINE WITH ELASTIC WAVES

It is a sort of potentian geological casualty in mine that there are faurlts, goals, no coal pit, fading of coal and so on, mine sometimes bring out accident and stoping working because the geological anomalous have not clear located. According to the sensitivity of different geological body physical character difference in density and elastic wave speed. We have analysed the propagating feafure of compressional wave, shear wave, Rayleigh wave and channel wave in strata and developed elastic seismic prospecting technique that includes device manufacturing, data acquiring and data processing. The technique have been used in many mines for detecting gete geologic anomalous from surface, underground heading and working face rib and got a great effect. It provides with poswerful exploration method for mines.