地震作用下滚石运动机理研究

Study on motion mechanism of rolling stones under earthquake action

强震触发崩塌滚石具有显著的水平抛射作用,通过对汶川地区106处崩塌落石的调查,发现滚石失稳后的运动特征主要为覆盖层变形引起的滑塌和重心偏移引起的滚动。本文采用恢复系数的计算方法对山顶落石运动过程中的运动速度进行计算,通过对滚石弹性碰撞恢复系数、落点速度及弹跳高度的反演,可以更有效地对崩塌滚石进行防护和治理,对今后防治滚石具有很好的参考借鉴。

The rolling stone triggered by strong earthquake has a significant horizontal ejection effect.Through the investigation of 106 collapsed rocks in Wenchuan Area,it is found that the movement characteristics of the rolling stone after instability are mainly the collapse caused by overburden deformation and the rolling caused by center of gravity shift.In this paper,the calculation method of recovery coefficient is used to calculate the motion velocity of falling rock on the mountaintop.Through the inversion of the recovery coefficient of elastic collision,the velocity of falling point and the bounce height of the rolling stone,the collapsing rolling stone can be protected and treated more effectively,which has a good reference for the prevention and control of rolling stone in the future.