基于CRockfall数值模拟落石崩塌运动特征
Movement Characteristics of Rockfall Collapse Based on CRockfall Numerical Simulation
刘丹1
作者信息
- 1. 四川建筑职业技术学院,四川 德阳 618000
- 折叠
摘要
[目的]山区公路工程边坡落石崩塌灾害具有突发性和强致灾性特点,是工程建设及运营过程中较为常见的地质安全隐患,有必要对落石崩塌运动特征进行研究.[方法]以西南地区某处公路边坡落石为例,在介绍落石运动分析计算算法的基础上,采用CRockfall落石软件模拟了典型落石运动轨迹,获取了主要运动特征.[结果]从统计最大值曲线峰值来看:落石运动动能能量、弹跳高度和速度分别约为2 000 kJ、75 m和53 m/s;统计95%保证率和均值曲线规律基本一致,从曲线峰值来看:落石运动动能能量、弹跳高度和速度分别约为500 kJ、25 m和25 m/s.[结论]在典型位置利用软件数据采集器功能获取落石运动特征参数,为后期拦挡结构设计提供依据.
Abstract
[Purposes]The slope rockfall collapse disaster of highway engineering in mountainous area has the characteristics of suddenness and strong catastrophability,which is a common geological safety haz-ard in the process of engineering construction and operation.Therefore,it is necessary to study the char-acteristics of rockfall collapse movement.[Methods]Taking the rockfall of a highway slope in Southwest China as an example,based on the introduction of the analysis and calculation algorithm of rockfall mo-tion,the CRockfall rockfall software is used to simulate the typical rockfall trajectory and obtain the main motion characteristics.[Findings]From the peak value of the statistical maximum curve,the kinetic en-ergy,bounce height and velocity of rockfall are about 2 000 kJ,75 m and 53 m/s,respectively.The statis-tical 95%guarantee rate and the mean curve are basically the same.From the peak value of the curve,the kinetic energy,bounce height and velocity of the rockfall are about 500 kJ,25 m and 25 m/s,respec-tively.[Conclusions]In the typical position,the software data collector function is used to obtain the characteristic parameters of rockfall motion,which provides the basis for the later block structure design.
关键词
落石/运动特征/数值模拟/CRockfall/崩塌Key words
rockfall/motion characteristic/numerical simulation/CRockfall/devolution引用本文复制引用
基金项目
2020年四川建筑职业技术学院院级课题(2020KJ05)
出版年
2024
NETL
NSTL
万方数据