围岩振动诱发冲击地压机制

Mechanism of rockburst initiated by the vibration of base rock

采用非线性振动方程描述了结构受围岩振动的运动规律，建立了振动诱发冲击地压的尖点突变模型。指出当围岩的振动在一定的频带和力幅范围内，会引起结构位移的突跳，从而诱发冲击地压。

Abstract The vibration of a mass with the effect of the vibration of base rockis described in this paper, using the nonlinear vibration equation. And aCusp model of catastrophe theory for the rockburst is founded. The result isachieved after analysis: within a certain limits for the frequency and forceamplitude, the vibration of base rock can cause a jump in the displacementof the mass, then the rockburst will occur.