Abstract:The present situation and progress trend of electro-magnetic emission(EME)prediction technology for rock or coal dynamical disasters are analyzed. On the basis of the relationship between EME signal and loading stress during deformation and fracture of coal or rock,the coupling methods between EME and stress are studied based on FLAC simulation for stress field and EME propagation. The results show that the coupling relationship can be expressed by thrice multinomial approximately. The electromagnetic emission signal will increase with the increase of loading stress,which approximately conforms to thrice multinomial. There are relatively large influences on the EME intensity or pulse in loading stress and loading speed. The higher the stress and loading speed are,the stronger the signal of electromagnetic emission produced is. The coupling results of calculation show that the EME signals increase with the increment of loading speed or the strength of coal or rock. The coupling method between EME and stress based on FLAC analogy can reliably ascertain the stress concentration fields,and properly simulate the distribution rules of EME signal in coal or rock stratum. It provides a kind of new approach to electromagnetic emission monitoring technology for the purpose of the application of monitoring EME to the prediction of dynamical disaster phenomena such as coal or rock outbursts. It can also provide reliably theoretical basis for the use of EME method and technology to predict and forecast rock or coal dynamical disasters. It has important meaning for perfecting the EME monitoring and detecting theory and promoting the related disciplines. Finally,a prospect for the research on the EME prediction technology for rock or coal dynamical disaster in the future is presented.