微差爆破振动波速度峰值-位移分布特征的延时控制

为了通过振动波传播规律研究微差爆破延时控制，改善爆破振动和提高爆炸能利用，选取普通雷管和澳瑞凯高精度雷管进行不同段别延期起爆对比实验，试爆过程对振动波测振。基于振动波函数优化理论基础，对实测数据和波状谱处理分析，总结了不同微差时间下振动波传播规律及速度峰值、主频、频带能量、总能量等变化特征，根据该特征发现振动波速度图谱和该速度积分所得位移图谱中两者最大值对应时间点相同。依据此速度峰值-振动位移分布特征，对某实测简单振动波进行高斯多峰拟合，结果表明:该波段能量最大化时间点为60 ms左右，振动最小的时间点为25 ms左右。

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

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.