Trajectory Analysis of the Rockfall Based on the Effect of Rotating Angular Velocity

doi:10.1007/s10706-021-01863-3

IR > 土木工程学院

	Trajectory Analysis of the Rockfall Based on the Effect of Rotating Angular Velocity
	Duan, Shaozhen; Jin, Wei; Sun, Jinlong; Wang, Wenda
	2022-01
发表期刊	GEOTECHNICAL AND GEOLOGICAL ENGINEERING
ISSN	0960-3182
卷号	40 期号:1 页码:121-131
摘要	The trajectory of a rolling stone begins and is characteristically accompanied by a certain initial rotation. Considering the influence of the initial rotation, the four basic motion forms of a rolling rock movement are analyzed, based on contact mechanics and kinematics principles. The speed calculationF formulas for a rolling rock mass were obtained. Besides, taking the dangerous rock slope of Changheba Hydropower Station in Sichuan Province as an example, the entire moving process of a rolling stone was simulated using Rocfall software, and the influence of an initial rotation on total kinetic energy, bounce height, and trajectory of the rolling stone during the movement was analyzed. According to the results, the determination of the most dangerous position during the movement of the rolling stone is not be affected by the initial rotation angular velocity. However, the maximum bounce height of the rolling stone at the most dangerous position increases with the increase of the initial rotation; the initial rotation of a rolling stone affects the longest distance and total horizontal distance. The probability density distribution of total kinetic energy and horizontal distance followed the Gaussian distribution; the influence of initial rotation on the central value can not be ignored. In this case, if the rotation was ignored, the rockfall disaster range would be underestimated, the rate can reach up to 94% when omega = 200rad/s. The initial rotation of a rolling stone has a different sensitivity to the slope characteristics. The smooth and hard surface was the most sensitive. The larger the angular velocity, the more sensitive the slope. Therefore, the influence of a rocking stone rotating velocity and slope surface material must be considered in investigating the trajectory of the rockfalls and the provision of protective measures.
关键词	Rolling stone disaster Rockfall Rocfall software Initial rotation Protective structure Numerical simulation
DOI	10.1007/s10706-021-01863-3
收录类别	ESCI ; EI ; SCOPUS
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Geological
WOS记录号	WOS:000661797200005
出版者	SPRINGER
EI入藏号	20212510519529
EI主题词	Rotation
EI分类号	502.1 Mine and Quarry Operations ; 611.1 Hydroelectric Power Plants ; 922.1 Probability Theory ; 931 Classical Physics ; Quantum Theory ; Relativity ; 931.1 Mechanics
来源库	WOS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148648
专题	土木工程学院
通讯作者	Duan, Shaozhen
作者单位	Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Duan, Shaozhen,Jin, Wei,Sun, Jinlong,et al. Trajectory Analysis of the Rockfall Based on the Effect of Rotating Angular Velocity[J]. GEOTECHNICAL AND GEOLOGICAL ENGINEERING,2022,40(1):121-131.
APA	Duan, Shaozhen,Jin, Wei,Sun, Jinlong,&Wang, Wenda.(2022).Trajectory Analysis of the Rockfall Based on the Effect of Rotating Angular Velocity.GEOTECHNICAL AND GEOLOGICAL ENGINEERING,40(1),121-131.
MLA	Duan, Shaozhen,et al."Trajectory Analysis of the Rockfall Based on the Effect of Rotating Angular Velocity".GEOTECHNICAL AND GEOLOGICAL ENGINEERING 40.1(2022):121-131.