Abstract：The interrelated parameters of fault rockburst are analyzed according to the surrounding rock-fault model and the fold catastrophe. The magnitudes of fault rockburst are forecasted. The fault rockburst is a dynamic phenomenon due to mining activities leading to the fault dislocation abruptly and the elastic strain energy release rapidly. The more the energy releases，the higher the magnitude is，and the graver the destructiveness is. So，the prevention and cure must be emphasized to avoid personnel casualties and to decrease grave loss. Its magnitude increases with the increasing of initial shear modulus and soften index of fault，and decreases with the increasing of the fault’s thickness and initial shear modulus of surrounding rock. The results show that the analysis of fault rockburst based on fold catastrophe theory is consonant with actual case.
