Abstract：The similarity model experiment is carried out to simulate the whole process of damage development of roof of metal mine laneway falling from stability. Fiber Bragg grating sensors installed in bolt are used to record the response signal of complete roof and damage roof under different confining pressures and different vibration intensities，and wavelet transform is utilized to extract vibration response signal of the band energy distribution characteristics. Finally，according to the result of the indoor experiment，the monitoring time series is predicted using radial basis function(RBF)；based on the view of energy band，the transient signal evaluation system under different damage conditions is established using software Matlab；and a serial of continuous signal are analyzed. The vibration response signal energy of damage roof is influenced by developed fracture. Compared with the complete roof，there is an obvious band cusp that the energy peak moves from high frequency to low frequency. Based on roof stability analysis method of wavelet frequency band energy，attenuation degree of wavelet decomposed frequency band energy is considered as the distinction that roof is stable or not. The frequency band energy ratio and the normalized energy ratio are used to determine the degree of damage and fracture state，which provides a reliable method for stability monitoring of laneway roof in metal mine.
