Control of delay time characterized by distribution of peak velocity-displacement vibration of millisecond blasting

被引：0

作者：

Lou X. ^{[1
,2
]}

Zhou W. ^{[1
]}

Jian W. ^{[3
]}

Zheng J. ^{[4
]}

机构：

[1] College of Zijin Mining, Fuzhou University, Fuzhou, 350116, Fujian

[2] Institute for Explosive Technology, Fuzhou University, Fuzhou, 350116, Fujian

[3] College of Environment and Resources, Fuzhou University, Fuzhou, 350116, Fujian

[4] College of Civil Engineering and Mechanics, Huazhong Universityof Science and Technology, Wuhan, 430074, Hubei

来源：

Baozha Yu Chongji/Explosion and Shock Waves | 2016年 / 36卷 / 06期

关键词：

Blasting vibration; Mechanics of explosion; Millisecond blasting; Multi-peaks fitting; Peak velocity; Time delay control;

D O I：

10.11883/1001-1455(2016)06-0839-08

中图分类号：

学科分类号：

摘要：

In order to improve the blasting vibration and boost the efficiency of blasting energy, this paper mainly focuses on the delay time control research through transmission law. We performed an experiment with a delayed-detonation scheme in different period, which selects common detonator and Orica high precision detonator. The measured vibration of the earthquake wave is based on seismic wave function optimization theory foundation. The measured data and wavy figure were acquired through it, then we found out the variation characteristics of the rules of earthquake wave propagation, peak velocity, domain frequency, band energy and the total energy in different delayed period. At the same time, according to the characteristics to find velocity map which Synthesized by triaxialvibration wave and displacement map which assembled by speed Calculus correspond to the maximum in same time. On the basis of peak velocity-vibration displacement distribution characteristics, fitting method for Gaussian multi-peak is applied for measured vibration wave, to give the band energy maximize time points about t=60 ms, blasting vibration around the minimum time for t=25 ms. © 2016, Editorial Board of EXPLOSION AND SHOCK WAVES. All right reserved.

引用

页码：839 / 846

页数：7

共 7 条

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