象山隧道挡水墙爆破拆除
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摘要
象山隧道的混凝土挡水墙和抗剪斜墙与隧道衬砌连成整体,厚度分别为7 m和5 m。为了拆除挡水墙和抗剪斜墙并保证衬砌安全,采用了预留保护层、预钻减震孔、非爆开挖超前导洞、严格控制单段爆破用药量、合理设计爆破参数等技术措施,成功拆除了挡水墙和抗剪斜墙,取得了很好的效果。
The thicknesses of the concrete water-stopping wall and anti-shearing wall of Xiangshan tunnel are 7 m and 5 m respectively.Countermeasures,including reserving protection layer,drilling vibration-reducing hole,non-blasting pilot heading,strict control of the charging quantity of each interval and rational blasting parameter design,are taken in order to demolish the water-stopping wall and the anti-shearing wall and to ensure the safety of the lining.In the end,good result has been achieved.
The thicknesses of the concrete water-stopping wall and anti-shearing wall of Xiangshan tunnel are 7 m and 5 m respectively.Countermeasures,including reserving protection layer,drilling vibration-reducing hole,non-blasting pilot heading,strict control of the charging quantity of each interval and rational blasting parameter design,are taken in order to demolish the water-stopping wall and the anti-shearing wall and to ensure the safety of the lining.In the end,good result has been achieved.
引文
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[2]刘招伟,方俊波.复杂环境条件下地下工程微振爆破施工技术探讨[J].隧道建设,2003,23(4):5-7.(LIU Zhao-wei,FANG Junbo.Discussion on the microseism blastingtechnology of underground engineering on the condition ofcomplex environment[J].Tunnel Construction,2003,23(4):5-7.(in Chinese))
[3]徐萍,严定成.周宁水电站地下厂房开挖爆破震动控制[J].隧道建设,2008,28(2):217-220.(XU Ping,YANDingcheng.Blasting vibration control in excavation of under-ground powerhouse of Zhouning hydropower station[J].Tun-nel Construction,2008,28(2):217-220.(in Chinese))
[4]费鸿禄.基础切割和预裂爆破技术的应用[J].中国矿业,2005,14(8):54-56.(FEI Honglu.Application offoundation cutting and presplitting blasting technology[J].China Mining Magazine,2005,14(8):54-56.(in Chi-nese))
[5]言志信,王永和,江平.爆破地震测试及建筑结构安全标准研究[J].岩石力学与工程学报,2003,22(11):1907-1911.(YAN Zhixin,WANG Yonghe,JIANG Ping.Studyon measurement of blast-induced seism and building safetycriteria[J].Chinese Journal of Rock Mechanics and Engi-neering,2003,22(11):1907-1911.(in Chinese))
[6]孟吉复,惠鸿斌.爆破测试技术[M].北京:冶金工业出版社,1992.
[7]GB6722—2003爆破安全规程[S].北京:中国标准出版社,2003.
[8]SL—94水工建筑物岩石基础开挖工程施工技术规范[S].北京:水利电力出版社,1994.
[9]陈庆,王宏图,胡国忠,等.隧道开挖施工的爆破振动监测与控制技术[J].岩土力学,2005,26(6):964-967.(CHEN Qing,WANG Hongtu,HU Guozhong,et al.Moni-toring and controlling technology for blasting vibration in-duced by tunnel excavation[J].Rock and Soil Mechanics,2005,26(6):964-967.(in Chinese))
[10]胡国伟,郝四旺,程文斌,等.复杂条件下单改双线隧道拆除扩挖控制爆破技术[J].铁道工程学报,2009(11):84-88.(HU Guowei,HAO Siwang,CHENG Wenbin,et al.Controlled blast technology for demolition and expan-sive excavation of tunnel for transforming the single trackinto double track under complicated conditions[J].Journalof Railway Engineering Society,2009(11):84-88.(inChinese))
[11]周余奎,马建军,刘智权.既有线隧道衬砌的爆破拆除技术[J].武汉科技大学学报:自然科学版,2005,28(1):43-45.(ZHOU Yukui,MA Jianjun,LIU Zhiquan.Dem-olition blasting of operational railway tunnel[J].Journal ofWuhan University of Science and Technology:Natural Sci-ence Edition,2005,28(1):43-45.(in Chinese))
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