| 基于Hilbert-Huang变换的爆破振动信号分析 |
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| 作者单位： | ;1.武汉科技大学;2.武钢矿业公司大冶铁矿;3.武钢矿业公司大冶铁矿;4.武钢矿业公司大冶铁矿 |
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| 摘 要： | 某矿为了保护周围建筑物、提高生产规模,在矿区周边建筑物附近布置了5个测点进行爆破振动测试。对测得的爆破振动信号进行Hilbert-Huang变换分析,得到爆破振动频率>50Hz的占7.56%,10～50Hz的频率占83.34%,<10Hz的频率占9.10%。将爆破振动实测数据进行回归,得到该矿区爆破振动传播规律,从而得到该矿最大段药量与周围砖砌民房的最大许可振动速度有关。结合爆破振动分析和爆破安全规程,把周边建筑物的最大许可振动速度由原来的2.0cm/s提高到2.3cm/s,有效地提高了最大段药量,提升了矿区生产规模,并确保了周边建筑物无损坏。
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| 关 键 词： | 爆破振动 Hilbert-Huang变换 振动信号 Hilbert谱 |
STUDY ON SIMULATION OF UNDERGROUND DEEP-HOLE BLASTING BY MODELS |
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| Abstract: | In this paper,a method of simulating underground deep hole blasting by models is introduced Three schemes of typical deep hole blasting are designed and tested by models in Daye Iron Mine Through analyzing the test results quantitatively,it is verified that the scheme of side directional throwing blasting has the advantage over the scheme of single row simultaneous blasting,which offers a basis for determination of blasting method in the mine |
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| Keywords: | Underground mine Deep hole blasting Blasting simulation Model test |
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