运用FLAC有限差分程序,建立了一个边坡动力数值分析模型,对不同动力参数及岩土参数条件下的边坡响应规律进行数值模拟研究.结果表明,边坡动力响应放大系数与加载频率不是简单的线性关系,而是存在一个主导频率,即在该频率的动载作用下,边坡动力响应放大系数较大.进一步研究表明,主导频率主要受边坡岩土体剪切模量和密度的影响.提出了边坡动力响应放大系数与输入动力参数以及岩体力学参数间的函数关系. A FLAC finite difference program was used to establish a numerical model of slope dynamic response and numerical simulation of slope response under different dynamic parameters and geotechnical parameters.The results show that the slope dynamic response amplification factor and loading frequency are not simple But there is a dominant frequency, that is, under the dynamic loading of the frequency, the amplification factor of slope dynamic response is larger.Further studies show that the dominant frequency is mainly affected by the shear modulus and density The relationship between the amplification factor of slope dynamic response and the input dynamic parameters and the mechanical parameters of rock mass is proposed.