Abstract: The microseismic signals of the coal and rock deformation and failure are monitored by the laboratory experiment method.The regularity and characteristics of microseismic signals of coal and rock deformation and failure are contrastive analyzed.Besides that,the mechanism of coal and rock deformation and failure is discussed.The research results show that,the coal and rock samples showing a weakly microseismic signals before the main fracture,that is to say,the main frequency zone is widen before the damage occurs,when the stress reach the maximum, the frequency of signals are complex,so,it is indicated that,the stage of coal samples enter a state of dangerous,it is necessary to take some appropriate measures to deal with them.Therefore,the change characteristics of microseismic signals of coal and rock deformation and failure can be used to predict the happens of coal and rock dynamic disasters.

Key words: Coal and rock, Microseismic signals, Characteristics of deformation