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2000 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。
[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 hazard in the process of engineering construction and operation.Therefore,it is necessary to study the characteristics 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 motion,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 energy,bounce height and velocity of rockfall are about 2000 kJ,75 m and 53 m/s,respectively.The statistical 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,respectively.[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.
作者
刘丹
LIU Dan(Sichuan College of Architectural Technology,Deyang 618000,China)
出处
《河南科技》
2024年第1期100-103,共4页
Henan Science and Technology
基金
2020年四川建筑职业技术学院院级课题项目“基于落石灾害威胁段边坡坡段特征优化设计研究与应用”(2020KJ05)。
