微差时间及柱状装药特征对爆破振动效应影响研究

doi:10.13722/j.cnki.jrme.2017.1163

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摘要

为了研究炮孔装药特征及微差时间对爆破振动效应影响，根据短柱装药爆破产生振动波的特点，研究双孔微差爆破振速的局部放大效应，同时在短柱装药爆破的基础上，研究长柱装药特征及起爆方式对炸药爆破振动效应的影响，得到长柱装药爆破下，药包长度、爆轰速度、埋置深度、起爆方式及围岩介质变化等对质点振速的影响，并利用萨氏公式拟合了柱状装药爆破下质点峰值速度。分析表明：局部放大效应的幅值及范围与微差时间和爆破荷载衰减系数密切相关。对于药包顶端以下点，当装药长度增加到一定程度时，质点振速不再随之增加，同时爆轰速度对爆破振动效应的影响也只限制在一定速度范围内。对于药包顶端以上点，柱状装药埋置长度越长，地表振速越大。不同的起爆方式下，底部起爆振速最大，其次是两端起爆，最小的是顶端起爆。距离爆源越近处的质点的振动效应受围岩介质变化影响越明显。柱状装药拟合得到的萨氏公式能较好地表征出长柱装药爆破振动峰值速度特点，球状装药拟合得到的萨氏公式不能表示长柱装药爆破振动特征。

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	陈士海1
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	胡帅伟1
	初少凤1

关键词 ：爆破工程, 柱状药包, 微差爆破, 爆破振动波, 质点峰值速度, 振动特性

Abstract：

In order to study the blasting vibration effect influenced by charging characteristics and millisecond time，the local amplification effect of blasting vibration velocity in double-hole blasting is discussed by analyzing the characteristics of vibration wave generated by finite length cylindrical charge. Meanwhile，the particle vibration effects of rock induced by long cylindrical charging characteristics and different initiation modes are analyzed. The effects of charge length，explosive detonation velocity，charge depth，initiation mode and rock characteristics on the blasting vibration are obtained. Besides， the peak particle velocity of long cylindrical charge is fitted with the Sadov¢s formula. The results show that the magnitude and scope of the local enlargement are closely related to the millisecond time and blasting attenuation coefficient. The blasting vibration velocity would no longer increase when the charge length increases to a certain extent for the measuring point below the top of the charge. Besides，the effect of detonation velocity on blasting vibration is only limited in a certain velocity range. For the measuring point above the top of the charge，the particle velocity on the surface grows bigger with the increasing of charging buried depth. For different initiation modes，the peak particle velocity is the maximum at bottom initiation， the second is both ends initiation，and the peak particle velocity is the minimum at top initiation. When the measuring point is closer to the source，the more obvious vibration affected by the rock characteristics change. The fitted Sadov¢s formula of cylindrical charge can well indicate the peak velocity characteristic of the blasting vibration of cylindrical charge. The fitted Sadov's formula of spherical charge cannot denote the vibration characteristic of cylindrical charge.

Key words： blasting engineering cylindrical charge millisecond blasting blasting vibration wave peak particle velocity vibration characteristics

引用本文:

陈士海1，2，胡帅伟1，初少凤1. 微差时间及柱状装药特征对爆破振动效应影响研究[J]. 岩石力学与工程学报, 2017, 36(S2): 3974-3983.
CHEN Shihai1，2，HU Shuaiwei1，CHU Shaofeng1. Study on the blasting vibration effect influenced by millisecond time and cylindrical charging characteristics. , 2017, 36(S2): 3974-3983.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2017.1163 或 https://rockmech.whrsm.ac.cn/CN/Y2017/V36/IS2/3974

[1]	苏波，高可帅，宋瑞富. 毫秒延时爆破振动叠加作用的数值模拟研究[J]. 工程爆破，2012，18(3)：12-16.(SUBo，GAO Keshuai，SONG Ruifu. Numerical simulation research on vibration superposition effects in the millisecond delay blasting[J]. Engineering Blasting，2012，18(3)：12-16.(in Chinese))
[2]	甄育才，朱传云. 中远区微差爆破振动叠加效应影响因素分析[J]. 爆破，2005，22(2)：11-16.(ZHEN Yucai，ZHU Chuanyun.Analysis on influential factors of vibration superposition in middle and far field of millisecond blasting[J]. Blasting，2005，22(2)：11-16.(in Chinese))
[3]	李的林，高振儒. 爆破振动危害中几个重要因素分析[J]. 工程爆破，1999，5(3)：64-67.(LI Delin，GAO Zhenru. Analysis on several principal factors of blasting vibration hazards[J]. Engineering Blasting，1999，5(3)：64-67.(in Chinese))
[4]	郑峰，段卫东，钟冬望，等. 爆破振动研究现状及存在问题的探讨[J]. 爆破，2006，23(1)：92-94.(ZHENG Feng，DUAN Weidong，ZHONG Dongwang，et al. Research progress and existing problems of blasting vibration[J]. Blasting，2006，23(1)：92-94.( in Chinese))
[5]	BLAIR D P. Some problems associated with standard charge weight vibration scaling laws[C]//Proceedings of the 3rd International Symposium on Fragmentation by Blasting. Brisbane：[s. n.]，1990：149-158.
[6]	BLAIR D P. Limitations of electronic delays for the control of blast vibration and fragmentation[C]//Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting. Boca Raton：CRC Press，2009：171-184.
[1]	YANG JH，LU WB，CHEN M，et al. Microseism Induced by transient release of in situ stress during deep rock mass excavation by blasting[J]. Rock Mechanics and Rock Engineering，2013，46(4)：859-875.
[2]	KALINSKI M E. Effect of vibroseis arrays on ground vibrations: A numerical study[J]. Journal of Environmental andEngineering Geophysics，2007，12(3)：281-287.
[3]	BLAIR D P. Blast vibration control in the presence of delay scatter and random fluctuations between blastholes[J]. International Journal for Numerical and Analytical Methods in Geomechanics，1993，17(2)：95-118.
[4]	BLAIR D P. Statistical models for ground vibration and airblast[J]. Fragblast，1999，3(4)：335-364.
[5]	BLAIR D P. Non-linear superposition models of blast vibration[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(2)：235-247.
[6]	ZHANG Z，NAARTTIJAERVI T. Reducing ground vibrations caused by underground blasts in LKAB Malmberget mine[J]. Fragblast，2005，9(2)：61-78.
[7]	VANBRABANT F，CHACÓN E P，QUIÑONES L A. P and S Mach waves generated by the detonation of a cylindrical explosive charge-experiments and simulations[J]. Fragblast，2002，6(1)：21-35.
[8]	BLAIR D P，MINCHINTON A. On the damage zone surrounding a single blasthole[J]. Fragblast，1997，1(1)：59-72.
[9]	MANDAL S K. Mathematical model to locate interference of blast waves from multi-hole blasting rounds[J]. Engineering，2012，4(3)：146-154.
[10]	STARFIELD A M，PUGLIESE J M. Compression waves generated in rock by cylindrical explosive charges：a comparison between a computer model and field measurements[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1968，5(1)：65-77.
[11]	李鹏，卢文波，吴新霞，等. 爆源因素对岩体开挖爆破振动频谱特性的影响研究[J]. 长江科学院院报，2014，31(11)：182-188.(LI Peng，LU Wenbo，WU Xinxia，et al.Influence of blast source parameters on spectral characteristics of vibration induced by blast of rock mass[J]. Journal of Yangtze River Scientific Research Institute，2014，31(11)：182-188.(in Chinese))
[12]	BLAIR D P. Blast vibration dependence on charge length，velocity of detonation and layered media[J]. International Journal of Rock Mechanics and Mining Sciences，2014，65：29-39.
[13]	HEELAN P A. Radiation from a cylindrical source of finite length[J]. Geophysics，1953，18(3)：685-696.
[14]	郭自强. 固体中的波[M]. 北京：地震出版社，1982：88-107.(GUO Ziqiang. Wave in solids[M]. Beijing：Seismological Press，1982：88-107.(in Chinese))
[15]	陈士海，王明洋，赵跃堂，等. 岩石爆破破坏界面上的应力时程研究[J]. 岩石力学与工程学报，2003，22(11)：1784-1788.(CHEN Shihai，WANG Mingyang，ZHAO Yuetang，et al.Time-stress history on interface between cracked and uncracked zones under rock blasting[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(11)：1 784-1 788.(in Chinese))
[16]	林大超，张奇，白春华. 近地表爆炸地震的地面竖向振动速度的随机特性[J]. 爆炸与冲击，2000，20(3)：235-240.(LIN Dachao，ZHANG Qi，BAI Chunhua. Random property of ground vertical vibration velocity induced by near ground explosion seismic effect[J]. Explosion and Shock Waves，2000，20(3)：235-240.( in Chinese))