工程爆破

2013, v.19(06) 13-16+21

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HHT能量判别法在英坪矿爆破振动中的应用
THE APPLICATION OF HHT ENERGY DISCRIMINANCE IN BLASTING VIBRATION OF YINGPING MINE

李宝山;张义平;
LI Bao-shan;ZHANG Yi-ping;Mining College of Guizhou University;Guizhou Engineering Lab of Mineral Resources;Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources;

摘要(Abstract):

通过EMD分解法将瓮福磷矿英坪矿段Ⅱ号坑爆破振动信号分解,得出IMF分量,经Hilbert变换后,进一步得出瞬时能量谱和能量等效速度,以此作为安全评价指标。HHT能量判别法综合反映了爆破振动的幅值和能量分布特征,同时体现了爆破振动三要素(振动强度、频率、持续时间),更能准确反映爆破振动的危害。
Blasting vibration signals in No.2 pit in Yingping Mine Area of Wengfu Phosphate Rock was decomposed to the imf components By means of EMD,and further instantaneous energy spectra and energy equivalent velocity were obtained through Hilbert transformation which were used as security evaluation indicators.The characteristics of amplitude and energy distribution in blasting vibration and three elements(vibration intensity,frequency and duration)of blasting vibration were comprehensively reflected by HHT energy discriminance.And it could precisely describe hazards caused by blasting vibration.

关键词(KeyWords): HHT;瞬时能量;等效速度;能量判别
HHT;Instantaneous Energy;Equivalent velocity;Energy discriminance

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50764001);; 贵州省重大科技专项(1091115)

作者(Author): 李宝山;张义平;
LI Bao-shan;ZHANG Yi-ping;Mining College of Guizhou University;Guizhou Engineering Lab of Mineral Resources;Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources;

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