Indoor Experimental Study on Low Frequency Vibration Characteristics of Bit Breaking Rock

Abstract:

The drill bit breaking rock would produce broadband vibration signal, different frequency represents different information. Due to the lower energy and higher attenuation, the high frequency signal is difficult to be detected. In this paper, the low frequency signal characteristics in the bit breaking rock are studied. By the analysis on micro-drill experiment data of different rocks, it is shown that the signals produced by bit breaking different rocks have fixed frequency characteristics in low frequency.