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

doi:10.11883/bzycj-2018-0337

CORC > 兰州理工大学 > 兰州理工大学 > 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, Wenhai 3; Liang, Rui 3; Chen, Jinlin 3; Zhu, Mian 3; Chen, Penghui 1; Lou, Xiaoming 4; Wang, Dunfan 2
刊名	Baozha Yu Chongji/Explosion and Shock Waves
	2019-08-05
卷号	39 期号:8
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
ISSN号	10011455
DOI	10.11883/bzycj-2018-0337
英文摘要	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.
语种	中文
出版者	Explosion and Shock Waves
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114792]
专题	石油化工学院
作者单位	1.Zijinshan Cuproauride, Zijin Minim Group Co Ltd, Longyan; Fujian; 364200, China; 2.Ocean College, Zhejiang University, Zhoushan; Zhejiang; 316021, China 3.School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 4.Institute for Explosive Technology, Fuzhou University, Fuzhou; Fujian; 350116, China;
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).