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现代矿业 ›› 2014, Vol. 30 ›› Issue (05): 9-10+39.

• 采矿·矿物加工 • 上一篇    下一篇

梅山铁矿深孔爆破合理微差时间研究

崔正荣1,2,3,张西良1,2,3   

  1. 1.中钢集团马鞍山矿山研究院有限公司;2金属矿山安全与健康国家重点实验室;3.金属矿产资源高效循环利用国家工程研究中心
  • 出版日期:2014-05-15 发布日期:2015-08-13

Research on the Reasonable Differential Time of Deep Hole Blasting in Meishan Iron Mine

Cui Zhengrong1,2,3,Zhang Xiliang1,2,3   

  1. 1.Sinosteel Mananshan Institute of Mining Research Co.,Ltd.;2.State Key Laboratory of Safety and Health for Metal Mine;3.National Engineering Research Center of High Efficiency Cyclic Utilization of Metal Mineral Resources
  • Online:2014-05-15 Published:2015-08-13

摘要: 为减少爆破振动对周边环境的影响,梅山铁矿对原有的爆破技术进行了改进,由原来3~5个孔同时爆破改为逐孔起爆,并对逐孔起爆的合理微差时间进行了调整。利用单孔爆破分析法,基于VB6.0平台数学建模进行波形叠加,每次时间增加量为1 ms,得出当微差时间为23 ms时,爆破振动速度最小,与现场试验结果基本吻合,为矿山减震爆破提供了理论依据。

关键词: 深孔爆破, 单孔分析法, VB6.0, 微差时间

Abstract: In order to reduce the influence of blasting vibration on the surrounding environment, the original blasting technology is improved, that is to say, the 3~5 holes blasting method is instead by the by hole blasting method and the reasonable differential time of the by hole blasting method is researched. The signal hole blasting analysis method is adopted and the mathematical model is established based on the VB6.0 so as to analyze the waveform by increase 1 ms at a time. According to the research results, when the differential time is 23 ms, the minimum blasting vibration velocity is acquired. So it is consistent with the field test results. Therefore,the researches of this paper can provide some theoretical basis for the mine vibration-suppressing blasting works.

Key words: Deep hole blasting, Signal hole analysis method, VB6.0, Differential time