一、引言 在地震或爆破等强烈振动影响下边坡岩体往往产生块体滑动。这种失稳的动力学特性迄今尚未获得应有的研究。 在大部分现有的文献中都采用惯性力原理,将动力问题化为静力问题解决。这种常规的准动态分析,只考虑最大振动加速度,使问题过于简化而偏于保守。少数文献中探讨了动力问题,但也未考虑动荷载的全波形,所以未能解决块体滑动的真正的动力学问题。 本文通过振动模拟试验探索了块体运动时滑动面的摩擦特性,建立了块体运动的动力微分方程,并通过数值积分研究了块体滑动的动力学过程,在此基础上讨论了边坡动力 I. INTRODUCTION Slope rock mass often produces block sliding under the influence of strong vibration such as earthquake or blasting. So far, the kinetic characteristics of this instability have not been properly studied. In most of the existing literature, the inertia force principle is used to solve the dynamic problem as a static problem. This conventional quasi-dynamic analysis, considering only the maximum vibration acceleration, the problem is too simplistic and conservative. Few literatures have explored dynamical problems, but have not considered the full waveform of dynamic loads, so they failed to solve the real dynamic problem of block sliding. In this paper, the friction characteristics of the sliding surface during the motion of the block are explored through the vibration simulation test. The dynamic differential equation of the block motion is established and the dynamic process of the block sliding is studied by numerical integration. On the basis of this,