隧洞全断面开挖中不同爆破孔作用边界及其诱发振动特性的比较分析

doi:10.13722/j.cnki.jrme.2021.1078

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (1481 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Figuring out the vibration characteristics induced by different kinds of boreholes in tunnel drilling and blasting and the inherent differences is an important issue. Taking the full-faced tunnel blasting excavation as an example，the blasting boundaries of different kinds of boreholes were analyzed in terms of the inner and outer acting effects in rock blasting. Based on the onsite single-hole and production blasting experiments，the peak particle velocity(PPV) and the dominant frequency(DF) induced by three kinds of typical boreholes，including cutting borehole，breaking borehole and smooth borehole，were compared and analyzed. Moreover，the differences of the inner and outer boundary conditions of different boreholes and their dynamic responses were further investigated by the numerical simulation. Finally，the inherent causes of the differences of vibration characteristics induced by different kinds of boreholes were outlined and discussed from the view of blasting energy distribution and plastic zone development. The results indicate that，for the cutting boreholes which are always detonated under single free-surface condition，the blasting clamping force is much stronger and the outer blasting effect is relative weaker，resulting that more explosion energy is converted into blast vibration and the PPV is relative larger. Compared with the breaking boreholes and the smoothing boreholes，the row spacing and the decouple-charging coefficient of the cutting boreholes are much smaller，and hence，the inner blasting effect as well as the area of the blast-induced plastic zone is increased while the DF is relative lower. Due to that both the breaking boreholes and the smooth boreholes initiate under two free surfaces including one natural surface and one blasting created surface，their outer and inner blasting effects as well as the PPV and DF distributions are similar although the later have a larger decouple-charging coefficient and a smaller spacing. In practice，the safety control of blast vibration could be realized in a way of adjusting the inner and outer blasting effects by changing the inner and outer boundary conditions.

Key words： tunneling engineering full-face tunnel blasting excavation different kinds of boreholes blasting boundaries vibration characteristics explosion energy distribution plastic zone development

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.1078 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I4/785

[1] HAGAN T N. Rock breakage by explosives[J]. Pergamon，1979，6(3)：329–340.
[2] 卢文波，李海波，陈明，等. 水电工程爆破振动安全判据及应用中的几个关键问题[J]. 岩石力学与工程学报，2009，28(8)：1 513–1 520. (LU Wenbo，LI Haibo，CHEN Ming，et al. Safety criteria of blasting vibration in hydropower engineering and several key problems in their application[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(8)：1 513–1 520.(in Chinese))
[3] YANG J H，LU W B，JIANG Q H，et al. Frequency comparison of blast-induced vibration per delay for the full-face millisecond delay blasting in underground opening excavation[J]. Tunnelling and Underground Space Technology incorporating Trenchless Technology Research，2016，51：189–201.
[4] 张继春，曹孝君，郑爽英，等. 浅埋隧道掘进爆破的地表震动效应试验研究[J]. 岩石力学与工程学报，2005，24(22)：4 158–4 163. (ZHANG Jichun，CAO Xiaojun，ZHENG Shuangying，et al. Experiment study on vibration effects of ground due to shallow tunnel blasting[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(22)：4 158–4 163.(in Chinese))
[5] 李洪涛，舒大强. 爆破震动衰减规律的影响因素[J]. 武汉大学学报：工学版，2005，48(1)：79–82.(LI Hongtao，SHU Daqiang. Influential factors analysis of blasting vibration attenuation law[J]. Engineering Journal of Wuhan University，2005，48(1)：79–82.(in Chinese))
[6] 杨风威，李海波，刘亚群，等. 台阶与预裂爆破岩体振动特征的对比研究[J]. 煤炭学报，2012，37(8)：1 285–1 291.(YANG Fengwei，LI Haibo，LIU Yaqun，et al. Comparative study on vibration characteristics of rock mass induced by bench blasting and pre-splitting blasting[J]. Journal of China Coal Society，2012，37(8)：1 285–1 291. (in Chinese))
[7] 饶宇，夏元友，胡英国，等. 预裂缝对爆破振动频谱分布特征的影响[J]. 振动与冲击，2017，36(7)：191–198.(RAO Yu，XIA Yuanyou，HU Yingguo，et al. Influence of pre-splitting crack on spectrum distribution characteristics of blasting vibration[J]. Journal of Vibration and Shock，2017，36(7)：191–198.(in Chinese))
[8] 曹祺，王林桂，马宏昊，等. 底部空气柱装药爆破减振理论和实验研究[J]. 工程爆破，2020，26(2)：42–64.(CAO Qi，WANG Guilin，MA Honghao，et，al. Research on blasting vibration reduction theory and experiment of bottom air column charging[J]. Engineering Blasting，2020，26(2)：42–64.(in Chinese))
[9] 池恩安，梁开水，赵明生. 孔底空气间隔装药降振试验研究[J]. 煤炭学报，2012，37(6)：944–950.(CHI Enan，LIANG Kaishui，ZHAO Mingsheng. Experimental study on vibration reduction of the hole-bottom air space charging[J]. Journal of China Coal Society，2012，37(6)：944–950.(in Chinese))
[10] 李新平，张雪屏，刘飞香，等. 群孔齐发爆破岩体振动频谱特性研究[J]. 爆破，2021，38(1)：14–20.(LI Xinping，ZHANG Xueping，LIU Feixiang，et al. Vibration spectrum characteristics of rock mass in simultaneous borehole blasting[J]. Blasting，2021，38(1)：14–20.(in Chinese))
[11] LU W B，LENG Z D，HU H R，et al. Experimental and numerical investigation of the effect of blast-generated free surfaces on blasting vibration[J]. European Journal of Environmental and Civil Engineering，2018，22(11)：1 374–1 398.
[12] 陈星明，肖正学，蒲传金. 自由面对爆破地震强度影响的试验研究[J]. 爆破，2009，26(4)：38–56.(CHEN Xingming，XIAO Zhengxue，PU Chuanjin. Experimental study on influence blasting earthquake strength to free faces[J]. Blasting，2009，26(4)：38–56.(in Chinese))
[13] BLAIR D P，ARMSTRONG L W. The influence of burden on blast vibration[J]. Fragblast，2001，5(1)：108–129.
[14] 池恩安，赵明生，梁开水. 自由面数量对爆破地震波时频特性影响分析[J]. 爆破，2013，30(2)：16–20.(CHEN Enan，ZHAO Mingsheng，LIANG Kaishui. Influence of numerical of free surface on Time-frequency characteristics of blasting seismic wave[J]. Blasting，2013，30(2)：16–20.(in Chinese))
[15] 王玉杰，陈先锋，柴修伟，等. 爆破工程[M]. 武汉：武汉理工大学出版社，2007：157–165.(WANG Yujie，CHEN Xianfeng，CAI Xiuwei，et al. Blasting engineering[M]. Wuhan：Wuhan University of Technology Press，2007：157–165.(in Chinese))
[16] 汪旭光，郑炳旭，张正忠，等. 爆破手册[M]. 北京：冶金工业出版社，2010：584–586.(WANG Xuguang，ZHENG Bingxu，ZHANG Zhengzhong，et al. Handbook of blasting[M]. Beijing：Metallurgical Industry Press，2010：584–586.(in Chinese))
[17] 高启栋，卢文波，杨招伟，等. 水平光面爆破激发地震波的成分及衰减特征[J]. 爆炸与冲击，2019，39(8)：170–182.(GAO Qidong，LU Wenbo，YANG Zhaowei. Components and attenuation of seismic waves induced by horizontal smooth blasting[J]. Explosive and Shock Wave，2019，39(8)：170–182.(in Chinese))
[18] 高启栋，卢文波，杨招伟，等. 垂直孔爆破诱发地震波的成分构成及演化规律[J]. 岩石力学与工程学报，2019，38(1)：18–27.(GAO Qidong，LU Wenbo，YANG Zhaowei，et al. Components and evolution laws of seismic waves induced by vertical-hole blasting[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(1)：18–27.(in Chinese))
[19] 冷振东，卢文波，胡浩然，等. 爆生自由面对边坡微差爆破诱发振动峰值的影响[J]. 岩石力学与工程学报，2016，35(9)：1 815–1 822. (LENG Zhendong，LU Wenbo，HU Haoran，et al. Studies on influence of blast-created free face on ground vibration in slope blasts with millisecond-delays[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(9)：1 815–1 822.(in Chinese))
[20] 黄永辉，刘殿书，李胜林，等. 高台阶抛掷爆破速度规律的数值模拟[J]. 爆炸与冲击，2014，34(4)：495–500.(HUANG Yonghui，LIU Dianshu，LI Shenglin，et al. Numerical simulation on pin-point blasting of sloping surface[J]. Explosive and Shock Waves，2014，34(4)：495–500.(in Chinese))
[21] 王高辉，张社荣，卢文波，等. 水下爆炸冲击荷载下混凝土重力坝的破坏效应[J]. 水利学报，2015，46(6)：723–731.(WANG Gaohui，ZHANG Sherong，LU Wenbo，et al. Sensibility analysis of intake elevation on water temperature discharged form a large thermal stratified reservoir[J]. Journal of Hydraulic Engineering，2015，46(6)：723–731.(in Chinese))
[22] ESEN S，ONEDERRA I，BILIGIN H A. Modelling the size of the crushed zone around a blasthole[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(4)：485–495.
[23] SANCHIDRIAN J A，SEGERRA P，LOPEZ L M. Energy components in rock blasting[J]. International Journal of Rock Mechanics and Mining Sciences，2006，44(1)：130–147.
[24] 卢文波，周俊汝，陈明，等. 爆破振动主频衰减公式研究[J]. 工程爆破，2015，21(6)：1–6.(LU Wenbo，ZHOU Junru，CHEN Ming，et al. Study on the attenuation formula of dominant frequency of blasting vibration. Engineering Blasting，2015，21(6)：1–6.(in Chinese))
[25] 周俊汝. 爆破地震波传播过程中振动主频的衰减规律研究[博士学位论文][D]. 武汉：武汉大学，2017.(ZHOU Junru. Study on attenuation of dominant frequency of blast-induced vibration[Ph. D. Thesis][D]. Wuhan：Wuhan University，2017.(in Chinese))