相邻洞室爆破施工对已有洞室的影响
|
摘要
爆破施工振动对邻近已有洞室的影响及其控制是隧洞工程中的关键技术问题。新建隧洞在与已有隧洞间距比较小的情况下进行爆破开挖,爆破开挖产生的爆破波会危及已有隧洞围岩和衬砌结构的安全与稳定性。结合锦屏一级水电站左岸洞群工程施工爆破的相互影响分析课题,应用动力有限元数值模拟,研究不同的围岩类别、洞室间距、岩体阻尼比、单响药量情况下爆破振动对邻近已有洞室围岩和衬砌结构的影响问题。根据洞壁振动速度允许值与隧洞衬砌在邻近爆破振动波作用下的动拉应力值,得出施工爆破洞室的最小间距及单响药量控制:III类围岩、洞间距为(1.5～2.0)D时,单响药量应控制在15 kg以内;IV类围岩、洞间距为(1.5～2.0)D时,单响药量应控制在12 kg以内;V类围岩、洞间距为(1.0～1.5)D时,单响药量应控制在10 kg以内。研究结果为实际工程的施工和设计提供了参考和依据。
The effect of blasting vibration on a new tunnel adjacent to existing tunnel and its control technology are the key issues of tunnel project.Since the new tunnel is close to existing tunnel,the seismic wave-induced by blasting endangers the safety and stabilization of surrounding rock and lining of existing tunnel.For different tunnel spacing distances,different types of surrounding rocks and safety explosive charge adopted in project are in need of determination.On the basis of the simulation with the dynamic FEM,the effects of blasting vibration on the surrounding rock and lining structure of adjacent existing tunnel with different types of surrounding rocks,tunnel spacing distances,rock mass damping ratios,explosive quantity circumstances are studied combining with mutual influences of blasting on left bank tunnels project construction of Jinping I Hydropower Station.According to the velocity of tunnel lining vibration and lining dynamic tensile stress caused by adjacent tunnel blasting vibration,the minimum spacing distance and explosive charge of blasting construction tunnels with surrounding rock grade III are obtained.When tunnel spacing distance varies from 1.5D to 2.0D,the explosive charge should be controlled less than 15 kg;for surrounding rock grade IV with the tunnel spacing distance 1.5D–2.0D,the explosive charge should be less than 12 kg;for surrounding rock grade V with tunnel spacing distance 1.0D– 1.5D,the explosive charge should be less than 10 kg.The achieved results can provide the references and analytical analysis to the construction and design of practical project.
The effect of blasting vibration on a new tunnel adjacent to existing tunnel and its control technology are the key issues of tunnel project.Since the new tunnel is close to existing tunnel,the seismic wave-induced by blasting endangers the safety and stabilization of surrounding rock and lining of existing tunnel.For different tunnel spacing distances,different types of surrounding rocks and safety explosive charge adopted in project are in need of determination.On the basis of the simulation with the dynamic FEM,the effects of blasting vibration on the surrounding rock and lining structure of adjacent existing tunnel with different types of surrounding rocks,tunnel spacing distances,rock mass damping ratios,explosive quantity circumstances are studied combining with mutual influences of blasting on left bank tunnels project construction of Jinping I Hydropower Station.According to the velocity of tunnel lining vibration and lining dynamic tensile stress caused by adjacent tunnel blasting vibration,the minimum spacing distance and explosive charge of blasting construction tunnels with surrounding rock grade III are obtained.When tunnel spacing distance varies from 1.5D to 2.0D,the explosive charge should be controlled less than 15 kg;for surrounding rock grade IV with the tunnel spacing distance 1.5D–2.0D,the explosive charge should be less than 12 kg;for surrounding rock grade V with tunnel spacing distance 1.0D– 1.5D,the explosive charge should be less than 10 kg.The achieved results can provide the references and analytical analysis to the construction and design of practical project.
引文
[1]崔积弘,周健,林从谋.爆破震动对既有洞室影响的数值模拟[J].有色金属,2008,60(1):101–104.(CUI Jihong,ZHOU Jian,LIN Congmou.Numerical simulation of effect of blasting seismic on existing chamber[J].Nonferrous Metals,2008,60(1):101–104.(in Chinese))
[2]张成良,李新平,曹俊峰.地下洞室群爆破地震波传播的现场试验研究[J].爆破,2007,24(4):71–76.(ZHANG Chengliang,LI Xinping,CAO Junfeng.In-situ experimental study on transmission of blasting vibration wave in groups of tunnels[J].Blasting,2007,24(4):71–76.(in Chinese))
[3]乔宪队.爆破震动对邻近隧洞的动力响应分析[硕士学位论文][D].长沙:中南大学,2007.(QIAO Xiandui.Dynamic response analysis of blasting vibration on an adjacent tunnel[M.S.Thesis][D].Changsha:Central South University,2007.(in Chinese))
[4]杨年华,刘慧.近距离爆破引起的隧道周边振动场[J].工程爆破,2000,6(2):6–10.(YANG Nianhua,LIU Hui.Vibration field at tunnel contour induced by a close-in blasting[J].Engineering Blasting,2000,6(2):6–10.(in Chinese))
[5]谭忠盛,杨小林,王梦恕.复线隧道施工爆破对既有隧道的影响分析[J].岩石力学与工程学报,2003,22(2):281–285.(TAN Zhongsheng,YANG Xiaolin,WANG Mengshu.Effect of blast in double line tunnel on existing tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(2):281–285.(in Chinese))
[6]阳生权.小线间距施工隧道爆破地震影响下既有隧道围岩线性动力分析[J].工程爆破,1998,4(1):1–6.(YANG Shengquan.Linear dynamic analysis of rock-media of old tunnel affected by blasting vibration of new tunnel with small line-clearance[J].Engineering Blasting,1998,4(1):1–6.(in Chinese))
[7]钟建辉.邻近隧道爆破施工对既有隧道影响的数值分析[硕士学位论文][D].天津:天津大学,2005.(ZHONG Jianhui.Numerical analysis of the influence of tunneling blasting on the existing tunnel[M.S.Thesis][D].Tianjin:Tianjin University,2005.(in Chinese))
[8]潘晓马.邻近隧道施工对既有隧道的影响[硕士学位论文][D].成都:西南交通大学,2002.(PAN Xiaoma.Influence of a new tunnel construction on the adjacent existing tunnel[M.S.Thesis][D].Chengdu:Southwest Jiaotong University,2002.(in Chinese))
[9]张正宇.现代水利水电工程爆破[M].北京:中国水利水电出版社,2003.(ZHANG Zhengyu.The blasting of the modern hydraulic and hydropower engineering[M].Beijing:China Water Power Press,2003.(in Chinese))
[10]SWOBODA G.Program system final-finite element analysis program for linear and nonlinear structure[R].Innsbruck:University of Innsbruck,1998.
[11]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,1994,13(4):357–364.(LI Ning,SWOBODA G.A numerical model for blast load and its application[J].Chinese Journal of Rock Mechanics and Engineering,1994,13(4):357–364.(in Chinese))
[12]胡益华,李宁,韩信.小湾饮水沟堆积体边坡爆破动力稳定分析[J].岩石力学与工程学报,2005,24(增2):5 932–5 937.(HU Yihua,LI Ning,HAN Xin.Dynamic stability analysis of accumulation body slope of Xiaowan Hydropower Station under blasting condition[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(Supp.2):5 932–5 937.(in Chinese))
[13]胡益华.小湾饮水沟岩质边坡爆破稳定性分析[硕士学位论文][D].西安:西安理工大学,2005.(HU Yihua.Dynamic stability analysis of slope of Xiaowan Power Station under blasting loading[M.S.Thesis][D].Xi′an:Xi′an University of Technology,2005.(in Chinese))
[14]张西前.节理岩体边坡爆破动力稳定性研究[博士学位论文][D].西安:西安理工大学,2006.(ZHANG Xiqian.Research on the dynamic stability under blasting load of jointed rock slope[Ph.D.Thesis][D].Xi′an:Xi′an University of Technology,2006.(in Chinese))
[15]HATANO T.Dynamical compression deformation and failure of concrete under earthquake load[C]//Proceedings of the Second World Conference on Earthquaking Engineering.[S.l.]:[s.n.],1960:1 979–1 993.
[16]李宁,陈文玲,张平.动荷作用下非贯通裂隙介质的强度性质[J].自然科学进展,2000,10(11):1 029–1 034.(LI Ning,CHEN Wenling,ZHANG Ping.Strength properties of the intermittent crack media under dynamic cyclic loading[J].Natural Science Progress,2000,10(11):1 029–1 034.(in Chinese))
[17]LI N.Wave propagation problems in the jointed rock mass[M].Xi′an:Northwest University of Technology Press,1993.
[2]张成良,李新平,曹俊峰.地下洞室群爆破地震波传播的现场试验研究[J].爆破,2007,24(4):71–76.(ZHANG Chengliang,LI Xinping,CAO Junfeng.In-situ experimental study on transmission of blasting vibration wave in groups of tunnels[J].Blasting,2007,24(4):71–76.(in Chinese))
[3]乔宪队.爆破震动对邻近隧洞的动力响应分析[硕士学位论文][D].长沙:中南大学,2007.(QIAO Xiandui.Dynamic response analysis of blasting vibration on an adjacent tunnel[M.S.Thesis][D].Changsha:Central South University,2007.(in Chinese))
[4]杨年华,刘慧.近距离爆破引起的隧道周边振动场[J].工程爆破,2000,6(2):6–10.(YANG Nianhua,LIU Hui.Vibration field at tunnel contour induced by a close-in blasting[J].Engineering Blasting,2000,6(2):6–10.(in Chinese))
[5]谭忠盛,杨小林,王梦恕.复线隧道施工爆破对既有隧道的影响分析[J].岩石力学与工程学报,2003,22(2):281–285.(TAN Zhongsheng,YANG Xiaolin,WANG Mengshu.Effect of blast in double line tunnel on existing tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(2):281–285.(in Chinese))
[6]阳生权.小线间距施工隧道爆破地震影响下既有隧道围岩线性动力分析[J].工程爆破,1998,4(1):1–6.(YANG Shengquan.Linear dynamic analysis of rock-media of old tunnel affected by blasting vibration of new tunnel with small line-clearance[J].Engineering Blasting,1998,4(1):1–6.(in Chinese))
[7]钟建辉.邻近隧道爆破施工对既有隧道影响的数值分析[硕士学位论文][D].天津:天津大学,2005.(ZHONG Jianhui.Numerical analysis of the influence of tunneling blasting on the existing tunnel[M.S.Thesis][D].Tianjin:Tianjin University,2005.(in Chinese))
[8]潘晓马.邻近隧道施工对既有隧道的影响[硕士学位论文][D].成都:西南交通大学,2002.(PAN Xiaoma.Influence of a new tunnel construction on the adjacent existing tunnel[M.S.Thesis][D].Chengdu:Southwest Jiaotong University,2002.(in Chinese))
[9]张正宇.现代水利水电工程爆破[M].北京:中国水利水电出版社,2003.(ZHANG Zhengyu.The blasting of the modern hydraulic and hydropower engineering[M].Beijing:China Water Power Press,2003.(in Chinese))
[10]SWOBODA G.Program system final-finite element analysis program for linear and nonlinear structure[R].Innsbruck:University of Innsbruck,1998.
[11]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,1994,13(4):357–364.(LI Ning,SWOBODA G.A numerical model for blast load and its application[J].Chinese Journal of Rock Mechanics and Engineering,1994,13(4):357–364.(in Chinese))
[12]胡益华,李宁,韩信.小湾饮水沟堆积体边坡爆破动力稳定分析[J].岩石力学与工程学报,2005,24(增2):5 932–5 937.(HU Yihua,LI Ning,HAN Xin.Dynamic stability analysis of accumulation body slope of Xiaowan Hydropower Station under blasting condition[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(Supp.2):5 932–5 937.(in Chinese))
[13]胡益华.小湾饮水沟岩质边坡爆破稳定性分析[硕士学位论文][D].西安:西安理工大学,2005.(HU Yihua.Dynamic stability analysis of slope of Xiaowan Power Station under blasting loading[M.S.Thesis][D].Xi′an:Xi′an University of Technology,2005.(in Chinese))
[14]张西前.节理岩体边坡爆破动力稳定性研究[博士学位论文][D].西安:西安理工大学,2006.(ZHANG Xiqian.Research on the dynamic stability under blasting load of jointed rock slope[Ph.D.Thesis][D].Xi′an:Xi′an University of Technology,2006.(in Chinese))
[15]HATANO T.Dynamical compression deformation and failure of concrete under earthquake load[C]//Proceedings of the Second World Conference on Earthquaking Engineering.[S.l.]:[s.n.],1960:1 979–1 993.
[16]李宁,陈文玲,张平.动荷作用下非贯通裂隙介质的强度性质[J].自然科学进展,2000,10(11):1 029–1 034.(LI Ning,CHEN Wenling,ZHANG Ping.Strength properties of the intermittent crack media under dynamic cyclic loading[J].Natural Science Progress,2000,10(11):1 029–1 034.(in Chinese))
[17]LI N.Wave propagation problems in the jointed rock mass[M].Xi′an:Northwest University of Technology Press,1993.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心