罗沙隧道洞口爆破振动研究
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摘要
以罗沙隧道为研究背景,进行了高地应力下硬岩隧道洞口爆破开挖振动监测试验。对振动数据进行了归一化处理,得到了关于硬岩隧道洞口爆破振动的萨氏经验公式;为爆破开挖设计优化提供了参考价值。在爆破振动速度研究中,爆破振动速度的最大水平径向分量大于最大水平切向分量,最大水平切向分量又大于最大垂直分量,与软岩隧道得到的规律是相反的。达到洞口位置时,爆破振动速度呈现出明显的增加,坡表表面呈现出明显的振动放大效应,这与在软岩隧道中得到的规律是一致的。
Taking the Luosha tunnel entrance in Lanzhou-Chongqing railway line for study,we conducted blasting vibration monitoring experiment under high stress,the vibration data were normalized. The Sodev's empirical formula was obtained on the hard rock tunnel entrance,and provided a reference value for the similar blasting design. In the blasting vibration study,the maximum horizontal radial component is larger than the maximum tangential component,while the maximum tangential component is larger than the maximum vertical component,the soft rock tunnel is reversed. When the vibration reaches the tunnel entrance location,the blasting vibration velocity shows a significant increase,and the slope shows noticeable vibration amplification,this is consistent with the soft rock tunnel.
Taking the Luosha tunnel entrance in Lanzhou-Chongqing railway line for study,we conducted blasting vibration monitoring experiment under high stress,the vibration data were normalized. The Sodev's empirical formula was obtained on the hard rock tunnel entrance,and provided a reference value for the similar blasting design. In the blasting vibration study,the maximum horizontal radial component is larger than the maximum tangential component,while the maximum tangential component is larger than the maximum vertical component,the soft rock tunnel is reversed. When the vibration reaches the tunnel entrance location,the blasting vibration velocity shows a significant increase,and the slope shows noticeable vibration amplification,this is consistent with the soft rock tunnel.
引文
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4 刘起霞,孙进忠,张连城,等.青岛地铁工程爆破振动效应分析.地震工程与工程振动,1999;19(4):118—123Liu Qixia,Sun Jinzhong,Zhang Liancheng,et al.Analysis of ground vibration effect caused by dig blast of subway construction in Qingdao.Earthquake Engineering and Engineering Vibration,1999;19(4):118—123
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7 杨年华,张志毅,邓志勇,等.硬岩隧道快速掘进的钻爆技术.工程爆破,2003;9(1):16—21Yang Nianhua,Zhang Zhiyi,Deng Zhiyong,et al.Drilling-and-blasting technology for rapid excavation of hard-rock tunnels.Engineering Blasting,2003;9(1):16—21
8 李林,郭连军,张大宁,等.金属矿山深部硬岩爆破的讨论.采矿技术,2013;11:112—115Li Lin,Guo Lianjun,Zhang Daning,et al.Discussion on the blasting of deep hard rock in metal mines.Mining Technology,2013;11 :112—115
9 李夕兵,姚金蕊,杜坤.高地应力硬岩矿山诱导致裂非爆连续开采初探—以开阳磷矿为例.岩石力学与工程学报,2013;32(6):1101—1111Li Xibing,Yao Jinrui,Du Kun.Preliminary study for induced fracture and non-explosive continuous mining in high-geostress hard rock mine—a case study of kaiyang phosphate ming.Chinese Journal of Rock Mechanics and Engineering,2013;32(6):1101—1111
10 宿钟鸣,薛晓辉.小净距隧道洞口段施工方法优化分析.华北水利水电学院学报,2013;34(6):22—24Su Zhongming,Xue Xiaohui.Optimization analysis of excavation method in portal section of neighborhood tunnel.Journal of North China Institute of Water Conservancy and Hydroelectric Power,2013;34(6):22—24
11 张庆松,李术才,李利平.分岔隧道大拱段围岩稳定性监控与爆破振动效应分析.岩石力学与工程学报,2008;27(7):1462—1468Zhang Qingsong,Li Shucai,Li Liping.Study of blasting dynamic effect and site monitoring of large-span shallow part of bifurcated tunnel.Chinese Journal of Rock Mechanics and Engineering,2008;27 (7):1462—1468
12 中铁第一勘察设计院集团有限公司.新建铁路兰州至重庆线汇报材料.西安,2013China Railway First Survey and Design Institute Group Co,Ltd.Report materials of new railway Lanzhou—Chongqing line.Xi'an,2013
2 余永强,路耀邦,杨小林,等.高地应力断裂破碎隧道爆破开挖振动效应.工程爆破,2010;16(3):48—51Yu Yongqiang,Lu Yaobang,Yang Xiaolin,et al.Blasting vibration effect of on tunnel excavation with high geo-stress and fracture zones.Engineering Blasting,2010;16(3):48—51
3 高文学,颜鹏程,李志星,等.浅埋隧道爆破开挖及其振动效应研究.岩石力学与工程学报,2011;30(S2):4153—4157Gao Wenxue,Yan Pengcheng,Li Zhixing,et al.Blasting excavation and vibration effects of shallow tunnel excavation.Chinese Journal of Rock Mechanics and Engineering,2011;30(S2):4153—4157
4 刘起霞,孙进忠,张连城,等.青岛地铁工程爆破振动效应分析.地震工程与工程振动,1999;19(4):118—123Liu Qixia,Sun Jinzhong,Zhang Liancheng,et al.Analysis of ground vibration effect caused by dig blast of subway construction in Qingdao.Earthquake Engineering and Engineering Vibration,1999;19(4):118—123
5 刘冬,高文学,钱文斐,等.隧道洞口开挖爆破振动监测与减振技术.公路,2007;12:218—221Liu Dong,Gan Wenxue,Qian Wenfei,et al.Vibration monitoring and vibration reduction technology of tunnel portal excavation blasting.Highway,2007;12:218—221
6 王嘉乐,杨泽进,李义.坑道出口现场爆破模型试验.煤炭学报,2013;38(1):97—102Wang Jiale,Yang Zejin,Li Yi.Model test of site blasting at tunnel exit.Journal of China Coal Society,2013;38(1):97—102
7 杨年华,张志毅,邓志勇,等.硬岩隧道快速掘进的钻爆技术.工程爆破,2003;9(1):16—21Yang Nianhua,Zhang Zhiyi,Deng Zhiyong,et al.Drilling-and-blasting technology for rapid excavation of hard-rock tunnels.Engineering Blasting,2003;9(1):16—21
8 李林,郭连军,张大宁,等.金属矿山深部硬岩爆破的讨论.采矿技术,2013;11:112—115Li Lin,Guo Lianjun,Zhang Daning,et al.Discussion on the blasting of deep hard rock in metal mines.Mining Technology,2013;11 :112—115
9 李夕兵,姚金蕊,杜坤.高地应力硬岩矿山诱导致裂非爆连续开采初探—以开阳磷矿为例.岩石力学与工程学报,2013;32(6):1101—1111Li Xibing,Yao Jinrui,Du Kun.Preliminary study for induced fracture and non-explosive continuous mining in high-geostress hard rock mine—a case study of kaiyang phosphate ming.Chinese Journal of Rock Mechanics and Engineering,2013;32(6):1101—1111
10 宿钟鸣,薛晓辉.小净距隧道洞口段施工方法优化分析.华北水利水电学院学报,2013;34(6):22—24Su Zhongming,Xue Xiaohui.Optimization analysis of excavation method in portal section of neighborhood tunnel.Journal of North China Institute of Water Conservancy and Hydroelectric Power,2013;34(6):22—24
11 张庆松,李术才,李利平.分岔隧道大拱段围岩稳定性监控与爆破振动效应分析.岩石力学与工程学报,2008;27(7):1462—1468Zhang Qingsong,Li Shucai,Li Liping.Study of blasting dynamic effect and site monitoring of large-span shallow part of bifurcated tunnel.Chinese Journal of Rock Mechanics and Engineering,2008;27 (7):1462—1468
12 中铁第一勘察设计院集团有限公司.新建铁路兰州至重庆线汇报材料.西安,2013China Railway First Survey and Design Institute Group Co,Ltd.Report materials of new railway Lanzhou—Chongqing line.Xi'an,2013