The Influence of Gravel Particle Diameter and Slope Angle on a Rockfall-Cushion Layer Collision

doi:10.1007/s10706-022-02207-5

IR > 土木工程学院

	The Influence of Gravel Particle Diameter and Slope Angle on a Rockfall-Cushion Layer Collision
	Duan, Shaozhen; Yang, Xin; Xu, Biao; Wei, Xinrong
	2022-10
发表期刊	GEOTECHNICAL AND GEOLOGICAL ENGINEERING
ISSN	0960-3182
卷号	40 期号:10 页码:5127-5138
摘要	Rockfall is a significant geological hazard in the mountain areas of Western China, which causes damage to residential and infrastructures. Velocity analysis of rock impacts on the cushion layers is a powerful method to predict the effectiveness of a protective cushion. Thus, this study investigates the velocity, angle, and angular velocity of rockfall after collision, considering the cushion layer's statistical nature, different slope angles, and collision positions. A stochastic collision model of the rockfall-cushion layer is established in this study to understand the mechanism of the collision process. Impulse and impulse moment theorems form the basis for the analytical solution of the velocity after the collision. The results show that the radius ratio of rockfall and cushion particle and slope angle are essential for rockfall-cushion layer collision. The probability distributions of rebound velocity, rebound angle, and rebound angular velocity follow the Gaussian distribution based on probability theory. When the radius ratio of rockfall and cushion particle is larger than the critical radius ratio R-cr, the radius ratio of rockfall and cushion particle no longer affects the collision process. The mean and standard deviation of rebound velocity, rebound angle, and rebound angular velocity after collision are fitted as the radius ratio of rockfall and cushion particle and slope angle functions, respectively. Therefore, it cannot ignore the influence of the radius ratio of rockfall and cushion particle, slope angle, and microstructure of slope surfaces in designing protective cushions.
关键词	Rockfall-cushion layer collision Probability distribution Energy consumption Slope angle Critical radius ratio
DOI	10.1007/s10706-022-02207-5
收录类别	ESCI ; EI
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Geological
WOS记录号	WOS:000815564700001
出版者	SPRINGER
EI入藏号	20222612283816
EI主题词	Energy utilization
EI分类号	502.1 Mine and Quarry Operations525.3 Energy Utilization731.1 Control Systems914.1 Accidents and Accident Prevention922.1 Probability Theory961 Systems Science
来源库	WOS
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158967
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,Yang, Xin,Xu, Biao,et al. The Influence of Gravel Particle Diameter and Slope Angle on a Rockfall-Cushion Layer Collision[J]. GEOTECHNICAL AND GEOLOGICAL ENGINEERING,2022,40(10):5127-5138.
APA	Duan, Shaozhen,Yang, Xin,Xu, Biao,&Wei, Xinrong.(2022).The Influence of Gravel Particle Diameter and Slope Angle on a Rockfall-Cushion Layer Collision.GEOTECHNICAL AND GEOLOGICAL ENGINEERING,40(10),5127-5138.
MLA	Duan, Shaozhen,et al."The Influence of Gravel Particle Diameter and Slope Angle on a Rockfall-Cushion Layer Collision".GEOTECHNICAL AND GEOLOGICAL ENGINEERING 40.10(2022):5127-5138.