Calculation and application of hole by hole blasting vibration superposition based on measured delay times of detonators

WU Haojun; GONG Min

doi:10.11883/bzycj-2017-0415

Volume 39 Issue 2

Feb. 2019

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WU Haojun, GONG Min. Calculation and application of hole by hole blasting vibration superposition based on measured delay times of detonators[J]. Explosion And Shock Waves, 2019, 39(2): 025202. doi: 10.11883/bzycj-2017-0415

Citation:

WU Haojun, GONG Min. Calculation and application of hole by hole blasting vibration superposition based on measured delay times of detonators[J]. Explosion And Shock Waves, 2019, 39(2): 025202. doi: 10.11883/bzycj-2017-0415

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Calculation and application of hole by hole blasting vibration superposition based on measured delay times of detonators

doi: 10.11883/bzycj-2017-0415

WU Haojun,
GONG Min^,

School of Civil and Envioronmental Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2017-11-17
Rev Recd Date: 2018-01-10
Publish Date: 2019-02-05

Abstract

Abstract

It's important to calculate the superposed vibration velocity of multi-segments' millisecond blasting for low vibration velocity control in urban tunnels, but each segments of non-electric detonators have delay errors which can't be ignore in vibration's millisecond superposition under a low vibration velocity criterion. If each waves initiated one by one in consider of delay ranges between segments, it will forms a huge number of probable superposed vibration velocity curves which will result in no way to find a solution. To solve this, single-hole blast curve is took as wave of blast source, Fourier series is used to fit the curve. According to the measured time delay ranges of each segments' detonators, logical language is used to write MATLAB routine such as multistage nested loops, it is succeeded to get the probable superposed vibration velocity curves of 8 segments' millisecond blasting. The influence of the delay errors on the blast vibration is analyzed from the same segment and the different segments. The second free surface creation time is determined by compare the computed superposed vibration curve with measured blasting vibration curve. All the probable vibration curves are superposed within the delay ranges of each segments before the surface's formation, the maximum charge is selected as the designed one whose maximum peak result is safe. The application in a tunnel project shows that the second free surface created at 60ms and the maximum superposed vibration velocity is 0.62 cm/s by 1.0 kg design charge, which is in good agreement with the measured results in the field.
- single-hole,
- millisecond blasting,
- superposed vibration velocity,
- second free surface

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References(15)

References

[1]	ANDERSON D A. A method site-specific prediction and control of ground vibration from blasting[C]//Proceedings of the First Mini-symposium on Explosives and Blasting Research, 1985: 28-42.
[2]	HINZEN K G. Modelling of blast vibration[J]. International Journal of Rock Mechanics and Mining Sciences, 1988, 25(6):439-445. doi: 10.1016/0148-9062(88)90984-9
[3]	BLAIR D P. Non-linear superposition models of blast vibration[J]. International Journal of Rock Mechanics & Mining Sciences, 2008, 45(2):235-247. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=e6437bb2cb0fb67889e68ab69ba3596d
[4]	吴从师, 吴其苏.爆破地震模拟初探[J].爆炸与冲击, 1990, 10(2):170-175. http://www.bzycj.cn/article/id/10833 WU Congshi, WU Qisu. A preliminary approach to simulating blast vibration[J]. Explosion and Shock Waves, 1990, 10(2):170-175. http://www.bzycj.cn/article/id/10833
[5]	徐全军, 毛志远, 张庆明, 等.深孔微差爆破震动预报浅析[J].爆炸与冲击, 1998, 18(2):182-186. http://www.bzycj.cn/article/id/10401 XU Quanjun, MAO Zhiyuan, ZHANG Qingming, et al. The analysis of ground vibration prediction of delay-fired bench blasting[J]. Explosion and Shock Waves, 1998, 18(2):182-186. http://www.bzycj.cn/article/id/10401
[6]	陈士海, 燕永峰, 戚桂峰, 等.微差爆破降震效果影响因素分析[J].岩土力学, 2011, 32(10):3003-3008. doi: 10.3969/j.issn.1000-7598.2011.10.018 CHEN Shihai, YAN Yongfeng, QI Guifeng, et al. Analysis of influence factors of interference vibration reduction of millisecond blasting[J]. Rock and Soil Mechanics, 2011, 32(10):3003-3008. doi: 10.3969/j.issn.1000-7598.2011.10.018
[7]	李鹏, 卢文波, 陈明.爆破振动全历程预测及主动控制研究进展[J].力学进展, 2011, 41(5):537-546. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CAS201303040000629805 LI Peng, LU Wenbo, CHEN Ming. Advances in full time -history prediction and active control of blasting vibration[J]. Advances in Mechanics, 2011, 41(5):537-546. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CAS201303040000629805
[8]	陈继强, 刘为洲.多孔爆破振动强度的单孔波形叠加计算[J].金属矿山, 2000(8):23-24;47. doi: 10.3321/j.issn:1001-1250.2000.08.007 CHEN Jiqiang, LIU Weizhou. Single-waveform superimposed calculation of the vibration strength of multi-hole blasting[J]. Metal Mine, 2000(8):23-24;47. doi: 10.3321/j.issn:1001-1250.2000.08.007
[9]	李顺波, 杨军.孔间不同毫秒延时对爆破振动影响的数值模拟[J].煤炭学报, 2013, 38(增刊2):325-330. http://d.old.wanfangdata.com.cn/Periodical/mtxb2013z2011 LI Shunbo, YANG Jun. Numerical simulation the effected of blasting vibration for different millisecond delay between the blast-hole[J]. Journal of China Coal Socity, 2013, 38(Suppl 2):325-330. http://d.old.wanfangdata.com.cn/Periodical/mtxb2013z2011
[10]	龚敏, 吴昊骏, 孟祥栋, 等.密集建筑物下隧道开挖微振控制爆破方法与振动分析[J].爆炸与冲击, 2015, 35(3):350-358. doi: 10.11883/1001-1455(2015)03-0350-09 GONG Min, WU Haojun, MENG Xiangdong, et al. A precisely-controlled blasting method and vibration analysis for tunnel excavation under dense buildings[J]. Explosion and Shock Waves, 2015, 35(3):350-358. doi: 10.11883/1001-1455(2015)03-0350-09
[11]	杨年华, 张乐.爆破振动波叠加数值预测方法[J].爆炸与冲击, 2012, 32(1):84-90. doi: 10.3969/j.issn.1001-1455.2012.01.015 YANG Nianhua, ZHANG Le. Blasting vibration waveform prediction method based on superposition principle[J]. Explosion and Shock Waves, 2012, 32(1):84-90. doi: 10.3969/j.issn.1001-1455.2012.01.015
[12]	韩亮, 梁书锋, 刘殿书, 等.深孔台阶爆破近区利用Anderson模型预测振动效应的修正方法研究[J].振动与冲击, 2017, 36(7):110-115. http://d.old.wanfangdata.com.cn/Periodical/zdycj201707017 HAN Liang, LIANG Shufeng, LIU Dianshu, et al. Study on correction method of forecasting the effects of vibration using Anderson model in near field of deep hole bench blasting[J]. Journal of Vibration and Shock, 2017, 36(7):110-115. http://d.old.wanfangdata.com.cn/Periodical/zdycj201707017
[13]	龚敏, 陈哲, 吴昊骏, 等.掏槽药量与起爆时差的关系对隧道爆破合成振速的影响[J].应用基础与工程科学学报, 2016, 24(6):1110-1124. http://www.cnki.com.cn/Article/CJFDTotal-YJGX201606004.htm GONG Min, CHEN Zhe, WU Haojun, et al. Influence of correlation between cut basting charge and detonating interval time on superposition vibration velocity caused by millisecond blasting in tunnel[J]. Journal of Basic Science and Engineering, 2016, 24(6):1110-1124. http://www.cnki.com.cn/Article/CJFDTotal-YJGX201606004.htm
[14]	龚敏, 邱燚可可, 李永强等.定制雷管微差时间实测与识别法在城市隧道爆破设计中的应用[J].岩石力学与工程学报, 2015, 34(6):1179-1187. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201506012.htm GONG Min, QIU Yikeke, LI Yongqiang, et al. Application of measuring and identifying detonation time of customized detonator in blasting design of urban tunnels[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(6):1179-1187. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201506012.htm
[15]	张义平, 李夕兵, 赵国彦.爆破微差延时的EMD识别法[J].地下空间与工程学报, 2006, 2(3):488-490. http://d.old.wanfangdata.com.cn/Periodical/dxkj200603032 ZHANG Yiping, LI Xibing, ZHAO Guoyan. The method of using EMD to identify time of delay in millisecond blasting[J]. Chinese Journal of Underground Space and Engineering, 2006, 2(3):488-490. http://d.old.wanfangdata.com.cn/Periodical/dxkj200603032