Seismic Features of Vibration Induced by Mining Machines and Feasibility to be Seismic Sources

The primary problem to carry out Seismic While Mining is whether the seismic signals, induced by vibration of mining machines, can be useful seismic sources. Firstly, this paper describes the seismic signals near filed induced by the shearer, boring machine and pneumatic drill respectively, and the signal features in time domain, frequency domain, autocorrelation functions. Secondly, shows the features of far field seismic signal emitted by the shearer, and the seismic interferometry of the record also is done. The result shows that the signal from the shearer is stronger in 1-400 Hz, and contained pulses and periodic compositions, in line with the characteristics of the shearer mining; far field signal of the shearer is mixed with microseisms; the single-shot record can gain from the far field shearer signal via deconvolution and correlation, and the seismic features of the shearer and microseisms are similar; seismic signals emitted from the boring machine and pneumatic drill also have broad band features. The experiential studies suggest that the vibration signals induced by the mining machines can be seismic sources.