地震作用下滚石运动机理研究  

Study on motion mechanism of rolling stones under earthquake action

作　　者：康家亮[1] 郑以宝[1] 程宪龙 KANG Jia-liang;ZHENG Yi-bao;CHENG Xian-long

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130021

出　　处：《东北水利水电》2023年第5期50-53,72,共5页Water Resources & Hydropower of Northeast China

基　　金：四川省科技创新团队项目(2011JTD012);交通运输部建设科技项目“四川藏区高海拔高烈度条件下公路建设减灾关键技术研究”(编号:2013 318 800 020)。

摘　　要：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.

关 键 词：强震 崩塌落石 运动特征值 碰撞恢复系数 

分 类 号：P642[天文地球—工程地质学] TV221.2[天文地球—地质矿产勘探]