双线隧道爆破振动危害数值模拟研究
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摘要
以某双线隧道为研究对象,运用ANSYS/LS-DYNA程序就爆破动荷载对隧道结构影响进行有限元分析,获得了掘进隧道和相邻隧道质点振速、单元最大主应力分布特征,计算得到质点峰值振速与实测结果相对误差不超过8%.数值模拟的最大主应力结果表明:掘进隧道右侧墙受爆破振动影响最大,拱肩次之,拱脚处爆破影响最小;相邻隧道迎爆侧受爆破振动影响严重,侧墙处影响最大,拱顶次之,背爆侧受爆破影响小.
Taking a double-track tunnel to study, the tunnel structure effects under blasting load were analyzed by the ANSYS/LSDYNA program, and the features of the vibration velocity and maximum principal stress were obtained, the relative error between the calculated peak particle velocity and the measured results is less than 8% by comparing the simulation results and measured data. Simulation results of the maximum principal stress showed that the right side wall of construction tunnel was the most urgently affected, the spandrel less, the arch springing the least. The blasting side of adjacent tunnel was urgently affected, the side wall the most, the vault less, the dorsal side of blasting was little affected.
Taking a double-track tunnel to study, the tunnel structure effects under blasting load were analyzed by the ANSYS/LSDYNA program, and the features of the vibration velocity and maximum principal stress were obtained, the relative error between the calculated peak particle velocity and the measured results is less than 8% by comparing the simulation results and measured data. Simulation results of the maximum principal stress showed that the right side wall of construction tunnel was the most urgently affected, the spandrel less, the arch springing the least. The blasting side of adjacent tunnel was urgently affected, the side wall the most, the vault less, the dorsal side of blasting was little affected.
引文
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[4]李宁,Swoboda G.爆破荷载的数值模拟与应用[J].岩石力学与工程学报,1994,12(1):357-364.LI Ning,Swoboda G.A numerical model for blast load and its application[J].Chinese Journal of Rock Mechanics and Engineering,1994,12(1):357-364.
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[8]何涛.ANSYS10.0/LS-DYNA3D非线性有限元分析实例指导教程[M].北京:机械工业出版社,2006.HE Tao.ANSYS10.0/LS-DYNA3D finite element analysis example tutorials[M].Beijing:Mechanical industry press,2006.
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[10]马文瀚,方先知,戴塔根,等.爆破振动对地质遗迹影响的数值模拟分析[J].湖南科技大学学报(自然科学版),2009,24(4):26-29.MA Wenhan,FANG Xianzhi,DAI Tagen,et al.Numerical simulation on geological heritage influenced by blasting vibration[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2009,24(4):26-29.
[11]夏祥,李俊如,李海波,等.爆破荷载作用下岩体振动特征的数值模拟[J].岩土力学,2005,26(1):50-54.XIA Xiang,LI Junru,LI Haibo,et al.Udec modeling of vibration characteristics of jointed rock mass under explosion[J].Rock and Soil Mechanics,2005,26(1):50-54.
[12]Dowding C H,Aimone C T.Multiple blast-hole stresses and measured fragmentation[J].Rock Mechanic and Rock Engineering,1985,18(3):17-36.
[13]胡益华,李宁,韩信,等.岩石边坡爆破动力荷载计算方法初探[J].水利与建筑工程学报,2005,3(1):49-52.HU Yihua,LI Ning,HAN Xin,et al.Calculating method of blasting load in rock slope engineering[J].Journal of Water Resource and Architectural Engineering,2005,3(1):49-52.
[14]刘亚群.动荷载作用下层状结构岩体边坡变形破坏机理与安全研究[D].武汉:中国科学院武汉岩土力学研究所,2009.LIU Yaqun.Study on the failure mechanism and safety of layered rock slopes subjected to dynamic loads[D].Wuhan:Institute of Rock&Soil Mechanics the Chinese Academy of Science,2009.
[15]李付胜.城市隧道掘进爆破数值模拟及震动效应控制研究[D].重庆:重庆大学,2008.LI Fusheng.Research of the numerical simulation for city tunnel excavation blasting seismic and control of blasting vibration effects[D].Chongqing:Chongqing University,2008.
[2]罗伟,朱传云,祝启虎.隧洞光面爆破中炮孔堵塞长度的数值分析[J].岩土力学,2008,29(9):2487-2490.LUOWei,ZHUChuanyun,ZHUQihu.Numerical simulation ofstemming length in tunnel smooth blasting[J].Rock and Soil Mechanics,2008,29(9):2487-2490.
[3]林大能,唐业茂,范金国,等.爆破震动作用下高陡边坡稳定性分析[J].矿业工程研究,2009,24(1):25-27.LIN Daneng,TANG Yemao,FAN Jinguo,et al.Slope stability under the action ofvibrations induced byblasting[J].Mineral EngineeringResearch,2009,24(1):25-27.
[4]李宁,Swoboda G.爆破荷载的数值模拟与应用[J].岩石力学与工程学报,1994,12(1):357-364.LI Ning,Swoboda G.A numerical model for blast load and its application[J].Chinese Journal of Rock Mechanics and Engineering,1994,12(1):357-364.
[5]张学民,阳军生,刘宝琛.层状岩体中近邻双线隧道爆破的振动响应研究[J].湖南科技大学学报(自然科学版),2006,21(4):70-73.ZHANG Xuemin,YANG Junsheng,LIU Baochen.Study on blasting seismic dynamic effect for tunnels with close interval in bedded rock mass[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2006,21(4):70-73.
[6]Sharpe J A.The production of elastic waves by explosion pressures.I.Theoryand empirical field observations[J].Geophysics,1942,7(2):144-154.
[7]刘礼标.爆破荷载下隧道围岩的损伤分析[D].重庆:重庆交通大学,2009.LIU Libiao.Damage analysis of surrounding rock under blast load[D].Chongqing:Chongqing Jiaotong University,2009.
[8]何涛.ANSYS10.0/LS-DYNA3D非线性有限元分析实例指导教程[M].北京:机械工业出版社,2006.HE Tao.ANSYS10.0/LS-DYNA3D finite element analysis example tutorials[M].Beijing:Mechanical industry press,2006.
[9]尚晓江,苏建宇.ANSYS/LS-DYNA动力分析方法与工程实例[M].北京:中国水利水电出版社,2008.SHANG Xiaojiang,SU Jianyu.ANSYS/LS-DYNA dynamic analysis methods and projects[M].Beijing:China Water Power Press,2008.
[10]马文瀚,方先知,戴塔根,等.爆破振动对地质遗迹影响的数值模拟分析[J].湖南科技大学学报(自然科学版),2009,24(4):26-29.MA Wenhan,FANG Xianzhi,DAI Tagen,et al.Numerical simulation on geological heritage influenced by blasting vibration[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2009,24(4):26-29.
[11]夏祥,李俊如,李海波,等.爆破荷载作用下岩体振动特征的数值模拟[J].岩土力学,2005,26(1):50-54.XIA Xiang,LI Junru,LI Haibo,et al.Udec modeling of vibration characteristics of jointed rock mass under explosion[J].Rock and Soil Mechanics,2005,26(1):50-54.
[12]Dowding C H,Aimone C T.Multiple blast-hole stresses and measured fragmentation[J].Rock Mechanic and Rock Engineering,1985,18(3):17-36.
[13]胡益华,李宁,韩信,等.岩石边坡爆破动力荷载计算方法初探[J].水利与建筑工程学报,2005,3(1):49-52.HU Yihua,LI Ning,HAN Xin,et al.Calculating method of blasting load in rock slope engineering[J].Journal of Water Resource and Architectural Engineering,2005,3(1):49-52.
[14]刘亚群.动荷载作用下层状结构岩体边坡变形破坏机理与安全研究[D].武汉:中国科学院武汉岩土力学研究所,2009.LIU Yaqun.Study on the failure mechanism and safety of layered rock slopes subjected to dynamic loads[D].Wuhan:Institute of Rock&Soil Mechanics the Chinese Academy of Science,2009.
[15]李付胜.城市隧道掘进爆破数值模拟及震动效应控制研究[D].重庆:重庆大学,2008.LI Fusheng.Research of the numerical simulation for city tunnel excavation blasting seismic and control of blasting vibration effects[D].Chongqing:Chongqing University,2008.
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