爆破振动持时分析及微差爆破延期时间优选

钟冬望 何理 操鹏 张奎

钟冬望, 何理, 操鹏, 张奎. 爆破振动持时分析及微差爆破延期时间优选[J]. 爆炸与冲击, 2016, 36(5): 703-709. doi: 10.11883/1001-1455(2016)05-0703-07
引用本文: 钟冬望, 何理, 操鹏, 张奎. 爆破振动持时分析及微差爆破延期时间优选[J]. 爆炸与冲击, 2016, 36(5): 703-709. doi: 10.11883/1001-1455(2016)05-0703-07
Zhong Dongwang, He Li, Cao Peng, Zhang Kui. Analysis of blasting vibration duration and optimizing of delayed time interval for millisecond blasting[J]. Explosion And Shock Waves, 2016, 36(5): 703-709. doi: 10.11883/1001-1455(2016)05-0703-07
Citation: Zhong Dongwang, He Li, Cao Peng, Zhang Kui. Analysis of blasting vibration duration and optimizing of delayed time interval for millisecond blasting[J]. Explosion And Shock Waves, 2016, 36(5): 703-709. doi: 10.11883/1001-1455(2016)05-0703-07

爆破振动持时分析及微差爆破延期时间优选

doi: 10.11883/1001-1455(2016)05-0703-07
基金项目: 

国家自然科学基金项目 51574184

湖北省教育厅科学技术研究项目 Q20161101

武汉科技大学青年科技骨干培育计划项目 2016xz018

详细信息
    作者简介:

    钟冬望(1963-),男,教授,博士生导师

    通讯作者:

    何理,emp-heli@hotmail.com

  • 中图分类号: O381

Analysis of blasting vibration duration and optimizing of delayed time interval for millisecond blasting

  • 摘要: 爆破振动持续时间以及微差爆破延期时间分别是爆破振动危害客观评价与主动控制的重要指标,对振动持时影响因素和延期时间优选方法进行深入探究极为必要。结合量纲分析理论,探讨了爆破振动持时影响因素,推导出爆破振动持时预测公式,该公式线性相关性达到89.7%;基于地震波线性叠加原理,通过MATLAB 7.0编程,计算得到毫秒微差爆破不同爆心距处合理延时区间。结果表明,爆破振动信号能量与振动持续时间相关性高,在振动持时预测公式中引入信号能量,可提高预测精度;振动持续时间与比例速度负相关,与比例药量正相关;合理孔间延期时间往往不是某一具体值,而是一个或多个时间区间;不同爆心距处合理延期时间值不同。工程应用表明,给出的爆破振动持时预测公式与微差爆破延时优选方法切实可行。
  • 图  1  各测点爆破振动时程曲线

    Figure  1.  Time-history curves of blasting vibration of each measuring point

    图  2  延期时间与振动峰值速度的关系

    Figure  2.  Variation of delayed time interval with peak velocity

    图  3  采石场图片

    Figure  3.  Picture of the quarry

    表  1  各变量的量纲

    Table  1.   Dimension of variables

    量纲 T ρ R μ Es E Q
    M 0 1 0 0 0 1 1
    L 0 -3 1 0 2 -1 0
    t 1 0 0 0 -2 -2 0
    下载: 导出CSV

    表  2  堰口采石场爆破振动数据

    Table  2.   Blasting vibration of quarry Yankou

    信号编号 R/m Vmax/(cm·s-1) T/ms Es/(J·10-2) Q/kg
    s1 15.5 7.39 50 211.08 35.6
    s2 24.5 4.93 32 96.26 35.6
    s3 29.0 3.74 60 54.27 35.6
    s4 35.5 3.77 86 54.26 35.6
    s5 40.0 3.65 64 71.03 35.6
    s6 46.0 2.31 25 24.09 35.6
    下载: 导出CSV

    表  3  各测点的合理延时区间

    Table  3.   Reasonable range of delayed time interval for each measuring point

    信道编号 R/m ti/ms tI/ms
    s1 15.5 6~11 13~14 - 8
    s2 24.5 22~25 - - 4
    s3 29.0 7~9 11~16 25~38 23
    s4 35.5 - - - 0
    s5 40.0 12~15 18~22 - 9
    s6 46.0 22~28 31~33 39~50 22
    下载: 导出CSV
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出版历程
  • 收稿日期:  2013-04-12
  • 修回日期:  2013-07-28
  • 刊出日期:  2016-09-25

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