城市浅埋隧道下穿密集建筑群控制爆破技术
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摘要
城市浅埋隧道下穿密集建筑群时,如何在保证掘进效率的前提下,控制爆破振动对地表建筑物安全的影响是关键。现以贵阳观山西路至兴筑西路段隧道施工下穿金阳步行街为工程背景,通过中心大空孔二阶复式掏槽形式,设计合理的装药结构和爆破参数;采用雷管跳段使用对起爆网路进行优化,成功地将地表振动速度控制在2. 0 cm/s范围内。通过地表振动监测与爆破信号分析,证明了该爆破方案的可行性,具有良好的经济和社会效益。
When shallow tunnels are excavated underneath intensive existing buildings in urban area,how to control the impact of blasting vibration on the safety of surface buildings under the premise of ensuring tunneling efficiency is the key. Taking the tunnel construction of Guiyang Guanshan west road to Xingzhu west which crossing Jinyang pedestrian street as the project background,the center of large empty hole combined with double cut form is used,reasonable charge structure and blasting parameters are designed,the detonator jump timing is used to optimize the detonator network,the ground vibration velocity is successfully controlled within 2. 0 cm/s. The feasibility of the blasting scheme is proved by the monitoring of ground vibration and the analysis of blasting signal,which has good economic and social benefits.
When shallow tunnels are excavated underneath intensive existing buildings in urban area,how to control the impact of blasting vibration on the safety of surface buildings under the premise of ensuring tunneling efficiency is the key. Taking the tunnel construction of Guiyang Guanshan west road to Xingzhu west which crossing Jinyang pedestrian street as the project background,the center of large empty hole combined with double cut form is used,reasonable charge structure and blasting parameters are designed,the detonator jump timing is used to optimize the detonator network,the ground vibration velocity is successfully controlled within 2. 0 cm/s. The feasibility of the blasting scheme is proved by the monitoring of ground vibration and the analysis of blasting signal,which has good economic and social benefits.
引文
1王超,周传波,路世伟,等.城市暗挖隧道爆破地震波传播规律研究[J].科学技术与工程,2017,17(6):158-162Wang Chao,Zhou Chuanbo,Lu Shiwei,et al.Propagation pattern of blasting vibration in the surrounding rock of metro tunnel[J].Science Technology and Engineering,2017,17(6):158-162
2张发财,王林台,刘春旭,等.地铁隧道掘进下穿BRT车站爆破振动效应研究[J].施工技术,2017,46(17):110-113Zhang Facai,Wang Lintai,Liu Chunxu,et al.Study on blasting vibration effect in subway tunnel tunneling with down-traversing BRT station[J].Construction Technology,2017,46(17):110-113
3王维富,梅竹.台阶法在超大断面浅埋偏压隧道中的应用研究[J].隧道建设,2017,37(12):1578-1584Wang Weifu,Mei Zhu.Study of application of bench method to shallowburied asymmetrically-pressured railway tunnel of super-large cross-section[J].Tunnel Construction,2017,37(12):1578-1584
4黄明利,孟小伟,谭忠盛,等.浅埋隧道下穿密集房屋爆破减震技术研究[J].地下空间与工程学报,2012,8(2):423-472Huang Mingli,Meng Xiaowei,Tan Zhongsheng,et al.Research on the blasting shock absorption technology for shallow buried tunnel undertraversing the dense houses[J].Chinese Journal of Underground Space and Engineering,2012,8(2):423-472
5周宜,王海亮,张祖远,等.城市浅埋隧道下穿建筑物的微振动爆破技术研究[J].隧道建设,2015,35(1):89-93Zhou Yi,Wang Hailiang,Zhang Zuyuan,et al.Study on micro-vibration blasting technology for shallow tunnels crossing underneath existing buildings in urban area[J].Tunnel Construction,2015,35(1):89-93
6张建波,杨新安,何知思.浅埋隧道下穿建筑物爆破振动规律及控制研究[J].华东交通大学学报,2014,31(1):17-22Zhang Jianbo,Yang Xin'an,He Zhisi.Blasting vibration rule and control of shallow tunnel undercrossing buildings[J].Journal of East China Jiaotong University,2014,31(1):17-22
7李立功,张亮亮,刘星.小净距双洞隧道下穿建筑物爆破振速控制技术研究[J].隧道建设,2016,36(5):592-599Li Ligong,Zhang Liangliang,Liu Xing.Study of technology of blasting vibration velocity control of small clear spacing twin-tube tunnel crossing underneath buildings[J].Tunnel Construction,2016;36(5):592-599
8刘海,邓伟民.浅埋双洞隧道爆破振动安全技术研究[J].山西建筑,2018,44(1):152-153Liu Hai,Deng Weimin.Research on blasting vibration safety technology of shallow double hole tunnel[J].Shanxi Architecture,2018,44(1):152-153
9汤劲松,刘松玉,童立元.卵砾石土地层偏压地形大跨浅埋隧道的施工方法[J].科学技术与工程,2018,18(1):115-121Tang Jinsong,Liu Songyu,Tong Liyuan.Tunneling method of largespan and shallow-buried tunnel with slope landform in cobble and gravel soil stratum[J].Science Technology and Engineering,2018,18(1):115-121
10郭得福,黄博,高文乐,等.浅埋隧洞爆破施工引起的振动效应[J].工程爆破,2017,23(1):71-76Guo Defu,Huang Bo,Gao Wenle,et al.Vibration effect caused by blasting in shallow tunnel[J].Engineering Blasting,2017,23(1):71-76
11熊祖钊,胡从骄,蔡路军.Ⅴ级围岩大断面隧道爆破开挖技术[J].科学技术与工程,2018,18(17):279-284Xiong Zuzhao,Hu Congjiao,Cai Lujun.Study on blasting excavation technology for large cross-section tunnel in surrounding rock of grade V[J].Science Technology and Engineering,2018,18(17):279-284
12卫建军.黄土地铁隧道施工围岩及地表变形规律[J].科学技术与工程,2018,18(11):287-292Wei Jianjun.The law of surrounding rock and ground surface deformation in loess tunnel construction[J].Science Technology and Engineering,2018,18(11):287-292
2张发财,王林台,刘春旭,等.地铁隧道掘进下穿BRT车站爆破振动效应研究[J].施工技术,2017,46(17):110-113Zhang Facai,Wang Lintai,Liu Chunxu,et al.Study on blasting vibration effect in subway tunnel tunneling with down-traversing BRT station[J].Construction Technology,2017,46(17):110-113
3王维富,梅竹.台阶法在超大断面浅埋偏压隧道中的应用研究[J].隧道建设,2017,37(12):1578-1584Wang Weifu,Mei Zhu.Study of application of bench method to shallowburied asymmetrically-pressured railway tunnel of super-large cross-section[J].Tunnel Construction,2017,37(12):1578-1584
4黄明利,孟小伟,谭忠盛,等.浅埋隧道下穿密集房屋爆破减震技术研究[J].地下空间与工程学报,2012,8(2):423-472Huang Mingli,Meng Xiaowei,Tan Zhongsheng,et al.Research on the blasting shock absorption technology for shallow buried tunnel undertraversing the dense houses[J].Chinese Journal of Underground Space and Engineering,2012,8(2):423-472
5周宜,王海亮,张祖远,等.城市浅埋隧道下穿建筑物的微振动爆破技术研究[J].隧道建设,2015,35(1):89-93Zhou Yi,Wang Hailiang,Zhang Zuyuan,et al.Study on micro-vibration blasting technology for shallow tunnels crossing underneath existing buildings in urban area[J].Tunnel Construction,2015,35(1):89-93
6张建波,杨新安,何知思.浅埋隧道下穿建筑物爆破振动规律及控制研究[J].华东交通大学学报,2014,31(1):17-22Zhang Jianbo,Yang Xin'an,He Zhisi.Blasting vibration rule and control of shallow tunnel undercrossing buildings[J].Journal of East China Jiaotong University,2014,31(1):17-22
7李立功,张亮亮,刘星.小净距双洞隧道下穿建筑物爆破振速控制技术研究[J].隧道建设,2016,36(5):592-599Li Ligong,Zhang Liangliang,Liu Xing.Study of technology of blasting vibration velocity control of small clear spacing twin-tube tunnel crossing underneath buildings[J].Tunnel Construction,2016;36(5):592-599
8刘海,邓伟民.浅埋双洞隧道爆破振动安全技术研究[J].山西建筑,2018,44(1):152-153Liu Hai,Deng Weimin.Research on blasting vibration safety technology of shallow double hole tunnel[J].Shanxi Architecture,2018,44(1):152-153
9汤劲松,刘松玉,童立元.卵砾石土地层偏压地形大跨浅埋隧道的施工方法[J].科学技术与工程,2018,18(1):115-121Tang Jinsong,Liu Songyu,Tong Liyuan.Tunneling method of largespan and shallow-buried tunnel with slope landform in cobble and gravel soil stratum[J].Science Technology and Engineering,2018,18(1):115-121
10郭得福,黄博,高文乐,等.浅埋隧洞爆破施工引起的振动效应[J].工程爆破,2017,23(1):71-76Guo Defu,Huang Bo,Gao Wenle,et al.Vibration effect caused by blasting in shallow tunnel[J].Engineering Blasting,2017,23(1):71-76
11熊祖钊,胡从骄,蔡路军.Ⅴ级围岩大断面隧道爆破开挖技术[J].科学技术与工程,2018,18(17):279-284Xiong Zuzhao,Hu Congjiao,Cai Lujun.Study on blasting excavation technology for large cross-section tunnel in surrounding rock of grade V[J].Science Technology and Engineering,2018,18(17):279-284
12卫建军.黄土地铁隧道施工围岩及地表变形规律[J].科学技术与工程,2018,18(11):287-292Wei Jianjun.The law of surrounding rock and ground surface deformation in loess tunnel construction[J].Science Technology and Engineering,2018,18(11):287-292