SOME PROBLEMS IN THE USE OF MRD-Ⅱ TYPE RAYLEIGH WAVE DETECTOR

The advantages of MRD-Ⅱ type Rayleigh wave detector,that it can detect omnidirectionally in short distance in mining geology,are displayed increasingly with its popularization in coal industry of our country.The problems paid attention on data acquisition,data final processing and error analysis are discussed by the authors from the principle of instrument,providing reference for increase of the detection accuracy.