岩溶隧道掘进爆破震动效应分析
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摘要
针对岩溶地区隧道爆破开挖对溶洞围岩和施工安全的直接影响,对广东清(远)连(州)高速公路白须公隧道救援通道爆破震动进行了监测。通过对溶洞壁的质点振动速度峰值统计分析,总结了爆破地震波在溶洞壁上的衰减规律,得出了隧道爆破对于临近溶洞的安全质点振动速度峰值。监测结果表明:隧道爆破震动中,相邻的溶洞壁径向的振动速度较小,垂直切向和纵向的振速相当;随着比例药量的减小,垂直切向和径向的振速逐渐接近。
Because of the tunnel's excavating at Karst area has a direct influence on a Karst cave wall rocks and the safety performance of excavating,so it is necessary to monitor the vibration resulted from blasting in Baixugong tunnel at Karst area.Through the statistical analysis of vibration's peak value of some particles' on Karst cave wall,the attenuation law of vibration wave's transiting in a Karst cave wall was studied.When a Karst cave is exposed to the blasting in a nearby tunnel,the safety peak value of vibration of particls on Karst cave wall was presented.The results show that the radial vibration of the wall is smaller,the vertical vibration and shear vibration are about equal especially the blasting is controlled to be smaller and smaller.3 tabs,5 figs,10 refs.
Because of the tunnel's excavating at Karst area has a direct influence on a Karst cave wall rocks and the safety performance of excavating,so it is necessary to monitor the vibration resulted from blasting in Baixugong tunnel at Karst area.Through the statistical analysis of vibration's peak value of some particles' on Karst cave wall,the attenuation law of vibration wave's transiting in a Karst cave wall was studied.When a Karst cave is exposed to the blasting in a nearby tunnel,the safety peak value of vibration of particls on Karst cave wall was presented.The results show that the radial vibration of the wall is smaller,the vertical vibration and shear vibration are about equal especially the blasting is controlled to be smaller and smaller.3 tabs,5 figs,10 refs.
引文
[1]曹孝君,张继春,吕和林.隧道掘进爆破引起地表震动的数值模拟与现场监测分析[J].中国公路学报,2007,20(2):87-91.CAO Xiao-jun,ZHANG Ji-chun,LU He-lin.Numeri-cal simulation and field monitoring analysis on surfacevibration resulted from tunnel driving blasting[J].China Journal of Highway and Transport,2007,20(2):87-91.
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[6]高峰,石玉成,严松宏,等.隧道的两种减震措施研究[J].岩石力学与工程学报,2005,24(2):222-229.GAO Feng,SHI Yu-cheng,YAN Song-hong,et al.Study of two shock absorption measures in tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(2):222-229.
[7]梁为民,杨小林,战军,等.溶洞对隧道爆破开挖影响的数值模拟研究[J].采矿与安全工程学报,2006,23(4):452-455.LIANG Wei-min,YANG Xiao-lin,ZHAN Jun,et al.Numerical simulation of tunnel excavation by blastingunder the influence of Karst cavities[J].Journal ofMining&Safety Engineering,2006,23(4):452-455.
[8]张丽华,陶连金,李晓霖.节理岩体地下洞室群的地震动力响应分析[J].世界地震工程,2002,18(2):158-162.ZHANG Li-hua,TAO Lian-jin,LI Xiao-lin.Dynamicresponse analysis of large underground excavation injointed rock[J].World Earthquake Engineering,2002,18(2):158-162.
[9]黄红元,刘伟.爆破荷载作用下岩溶区隧道围岩变形分析[J].公路交通技术,2003(6):72-75.HUANG Hong-yuan,LIU Wei.The deformationanalysis of tunnel surrounding rock in Karst regionunder explosive load[J].Technology of Highway andTransport,2003(6):72-75.
[10]汪旭光,于亚伦.关于爆破震动安全判据的几个问题[J].工程爆破,2001,7(2):88-92.WANG Xu-guang,YU Ya-lun.On several problemsof safety criterion for blasting vibration[J].Engineer-ing Blasting,2001,7(2):88-92.
[2]张庆彬,吴从师,周扬水.大跨度隧道的钻爆设计和震动测试[J].采矿技术,2005,5(3):73-75.ZHANG Qing-bin,WU Cong-shi,ZHOU Yang-shui.The drill blast design and vibration test of a large-span tunnel[J].Mining Technology,2005,5(3):73-75.
[3]楼晓明,郑俊杰,马建军,等.隧道爆破振动速度研究[J].有色金属:矿山部分,2007,59(3):31-34.LOU Xiao-ming,ZHENG Jun-jie,MA Jian-jun,et al.Study on blasting vibration velocity in tunnel[J].Nonferrous Metal:Mining Section,2007,59(3):31-34.
[4]陈庆,王宏图,胡国忠,等.隧道开挖施工的爆破振动监测和控制技术[J].岩石力学,2005,26(6):964-967.CHEN Qing,WANG Hong-tu,HU Guo-zhong,et al.Monitoring and controlling technology for blasting vi-bration induced by tunnel excavation[J].Rock andSoil Mechanics,2005,26(6):964-967.
[5]赵东平,王明年.小净距交叉隧道爆破振动响应研究[J].岩土工程学报,2007,29(1):116-119.ZHAO Dong-ping,WANG Ming-nian.Study on influ-ence of blasting vibration on cross tunnels with smallclearance[J].Chinese Journal of Geotechnical Engi-neering,2007,29(1):116-119.
[6]高峰,石玉成,严松宏,等.隧道的两种减震措施研究[J].岩石力学与工程学报,2005,24(2):222-229.GAO Feng,SHI Yu-cheng,YAN Song-hong,et al.Study of two shock absorption measures in tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(2):222-229.
[7]梁为民,杨小林,战军,等.溶洞对隧道爆破开挖影响的数值模拟研究[J].采矿与安全工程学报,2006,23(4):452-455.LIANG Wei-min,YANG Xiao-lin,ZHAN Jun,et al.Numerical simulation of tunnel excavation by blastingunder the influence of Karst cavities[J].Journal ofMining&Safety Engineering,2006,23(4):452-455.
[8]张丽华,陶连金,李晓霖.节理岩体地下洞室群的地震动力响应分析[J].世界地震工程,2002,18(2):158-162.ZHANG Li-hua,TAO Lian-jin,LI Xiao-lin.Dynamicresponse analysis of large underground excavation injointed rock[J].World Earthquake Engineering,2002,18(2):158-162.
[9]黄红元,刘伟.爆破荷载作用下岩溶区隧道围岩变形分析[J].公路交通技术,2003(6):72-75.HUANG Hong-yuan,LIU Wei.The deformationanalysis of tunnel surrounding rock in Karst regionunder explosive load[J].Technology of Highway andTransport,2003(6):72-75.
[10]汪旭光,于亚伦.关于爆破震动安全判据的几个问题[J].工程爆破,2001,7(2):88-92.WANG Xu-guang,YU Ya-lun.On several problemsof safety criterion for blasting vibration[J].Engineer-ing Blasting,2001,7(2):88-92.
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