建筑物在初始变形阶段,由于土石颗粒移动,会产生一种耳朵听不到的音响,称为振音信号。以后随着变形增大,建筑物趋于越来越不稳定,振音信号的频率和强度也随之增大。最后,在建筑物毁坏前夕,振音信号出现明显增大。目前,世界上广泛地应用振音监视系统,监视土石建筑物的稳定性。振音监视技术与其它方法不同,在关键时刻,它可以探测出大面 Buildings in the initial deformation stage, due to the movement of earth and rock particles, will produce a kind of sound can not hear the ear, called the vibration signal. With the deformation increases, the building tends to be more and more unstable, the vibration signal frequency and intensity also increases. Finally, on the eve of the destruction of the building, the vibration signal appears significantly larger. At present, the vibration monitoring system is widely used in the world to monitor the stability of earth-rock buildings. Unlike other methods of vibro-acoustic monitoring, it detects large surfaces at critical moments