Millisecond time for reducing vibration between two holes for slope blasting determined by stability coefficient of time history

doi:10.11883/bzycj-2018-0337

IR > 石油化工学院

	Millisecond time for reducing vibration between two holes for slope blasting determined by stability coefficient of time history
	Zhou, Wenhai1 ; Liang, Rui1 ; Chen, Jinlin1 ; Zhu, Mian 1; Chen, Penghui 2; Lou, Xiaoming 3; Wang, Dunfan 4
	2019-08-05
发表期刊	Baozha Yu Chongji/Explosion and Shock Waves
ISSN	10011455
卷号	39 期号:8
摘要	In the present study we found out about the optimum millisecond time for reducing vibration in hole-by-hole blasting, on the basis of an actual slope detonation work. At first we constructed a two-dimensional static model using ANSYS and determined the potential sliding surface and the static safety factor in the natural state using finite element reduction. Then we rebuilt the three-dimensional dynamic model of millisecond hole-by-hole blasting and carried out the dynamic analysis using LS-DYAN. In the whole process, we set up three holes in the same row using millisecond detonating by five differential millisecond time control of 0, 17, 25, 42 and 65 ms. At the end of the construction site, we conducted small-scale vibration tests of four millisecond time control in row holes (25 ms, 17 ms), (25 ms, 25 ms), (25 ms, 42 ms), (25 ms, 65 ms), with the stress value of the sliding surface unit during the simultaneous detonation of three holes in the simulated results taken into the formula of limit equilibrium, and drew out the time history curve of slope stability coefficient under impact loading. Analyzing the time history curve, we found that the optimum millisecond time for vibration reduction was 48 ms. Moreover, the results of three-dimensional numerical simulation and vibration test showed that the effect of vibration reduction was better when the millisecond time between holes was 42 ms. The result shows that the millisecond time, given by the slope stability coefficient, is consistent with the simulated and experimental results, which provides a reference for related research on vibration reduction of millisecond hole-by-hole blasting. © 2019, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
关键词	Blasting Detonation Safety factor Slope protection Stress analysis Vibration analysis Hole by hole blasting Impact loads Millisecond delay Potential sliding surfaces Static safety factors Three-dimensional dynamic models Three-dimensional numerical simulations Time history analysis
DOI	10.11883/bzycj-2018-0337
收录类别	EI
语种	中文
出版者	Explosion and Shock Waves
EI入藏号	20194107506622
EI主题词	Slope stability
EI分类号	406.2 Roads and Streets - 914.1 Accidents and Accident Prevention - 951 Materials Science
来源库	Compendex
分类代码	406.2 Roads and Streets - 914.1 Accidents and Accident Prevention - 951 Materials Science
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/114792
专题	石油化工学院
作者单位	1.School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.Zijinshan Cuproauride, Zijin Minim Group Co Ltd, Longyan; Fujian; 364200, China; 3.Institute for Explosive Technology, Fuzhou University, Fuzhou; Fujian; 350116, China; 4.Ocean College, Zhejiang University, Zhoushan; Zhejiang; 316021, China
第一作者单位	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	Zhou, Wenhai,Liang, Rui,Chen, Jinlin,et al. Millisecond time for reducing vibration between two holes for slope blasting determined by stability coefficient of time history[J]. Baozha Yu Chongji/Explosion and Shock Waves,2019,39(8).
APA	Zhou, Wenhai.,Liang, Rui.,Chen, Jinlin.,Zhu, Mian.,Chen, Penghui.,...&Wang, Dunfan.(2019).Millisecond time for reducing vibration between two holes for slope blasting determined by stability coefficient of time history.Baozha Yu Chongji/Explosion and Shock Waves,39(8).
MLA	Zhou, Wenhai,et al."Millisecond time for reducing vibration between two holes for slope blasting determined by stability coefficient of time history".Baozha Yu Chongji/Explosion and Shock Waves 39.8(2019).