基于流固耦合分析的富水隧道外水压力与限量排放标准研究
|
摘要
隧道衬砌结构外水压力和限量排放标准是岩溶山区隧道工程建设关注的焦点。以某富水隧道为依托,借助FLAC~(3D)软件通过流固耦合数值分析,对富水隧道衬砌结构合理的外水压力取值和限量排放标准进行研究。分析了围岩无注浆条件下隧道外水压力随排水量的变化规律,进而提出了基于结构安全的隧道外水压力取值和地下水排放标准,同时分析了围岩注浆条件下隧道外水压力随注浆圈厚度和地下水排放量的变化规律,提出不同注浆厚度条件下地下水排放标准和合理的注浆圈厚度取值。
The external water pressures of tunnel lining structures and the limited discharge standards are the focus of tunnel construction in karst mountainous areas. Based on a water-rich tunnel, by using the FLAC~(3D) software, the reasonable values of the external water pressures for the lining structures of the tunnel and the limited discharge standards are studied through the numerical analysis of fluid-solid coupling. The variation laws of water pressures of the tunnel with displacement without grouting is analyzed, then the values of the external water pressures of the tunnel and the standards of groundwater discharge based on the structural safety are proposed. At the same time, the variation laws of the external water pressures of the tunnel with grouting ring thickness and groundwater discharge under grouting are analyzed, the standards of groundwater discharge and the reasonable values of grouting ring thickness under different grouting thicknesses are put forward.
The external water pressures of tunnel lining structures and the limited discharge standards are the focus of tunnel construction in karst mountainous areas. Based on a water-rich tunnel, by using the FLAC~(3D) software, the reasonable values of the external water pressures for the lining structures of the tunnel and the limited discharge standards are studied through the numerical analysis of fluid-solid coupling. The variation laws of water pressures of the tunnel with displacement without grouting is analyzed, then the values of the external water pressures of the tunnel and the standards of groundwater discharge based on the structural safety are proposed. At the same time, the variation laws of the external water pressures of the tunnel with grouting ring thickness and groundwater discharge under grouting are analyzed, the standards of groundwater discharge and the reasonable values of grouting ring thickness under different grouting thicknesses are put forward.
引文
[1]余庆锋,吴立.高速铁路隧道岩溶突水发生机理研究[J].科学技术与工程,2015,15(30):199-205.(YU Qing-feng WU Li.Study on karst water inrush mechanism in high-speed railway tunnel[J].Science Technology and Engineering,2015,15(30):199-205.(in Chinese))
[2]刘建,刘丹,宋凯.渝怀铁路歌乐山隧道排水的地下水环境负效应评价[J].现代隧道技术,2012,49(4):179-183.(LIU Jian,LIU Dan,SONG Ka.Evaluation of the negative effects on groundwater environment resulted by Geleshan tunnel drainage[J].Modern Tunnelling Technology,2012,49(4):179-183.(in Chinese))
[3]单士军,李耐霞.歌乐山隧道施工过程环境影响分析及建议[J].工业安全与环保,2004,30(11):21-22.(SHANShi-jun,LI Nai-xia.The analysis and suggestion of environmental impact on Geleshan tunnel construction[J].Industrial Safety and Environmental Protection,2004,30(11):21-22.(in Chinese))
[4]刘志春,朱永全,高新强,等.干旱山区隧道施工地下水环境保护技术研究[R].石家庄:石家庄铁道大学,2010.(LIU Zhi-chun,ZHU Yong-quan,GAO Xin-qiang,et al.Study on technology of groundwater environment protection during tunnel construction in the arid mountain area[R].Shijiazhuang:Shijiazhuang Tiedao University,2010.(in Chinese))
[5]付钢,王磊.高压富水地层中隧道衬砌结构设计方法探讨[J].地下空间与工程学报,2007,3(2):252-257.(FUGang,WANG Lei.Study on design method of lining structure of the highway tunnel in deep-lying stratum with highwater level[J].Chinese Journal of Under ground Space and Engineering,2007,3(2):252-257.(in Chinese))
[6]赵瑞,许模,范辰辰.隔挡式背斜区隧道群地下水渗流场模拟演化[J].现代隧道技术,2015,52(3):69-74.(ZHAO Rui,XU Mo,FAN Chen-chen.Numerical simulation of the groundwater seepage field of a tunnel group in an ejective anticline zone[J].Modern Tunnelling Technology,2015,52(3):69-74.(in Chinese))
[7]刘志春,万良勇.地层注浆加固对隧道与地下水相互作用过程中的“双赢”影响效应分析[J].现代隧道技术,2015,52(2):87-96.(LIU Zhi-chun,WAN Liang-yong.Win-win effect of ground consolidation grouting on the interaction between tunnel and groundwater[J].Modern Tunnelling Technology,2015,52(2):87-96.(in Chinese))
[8]王建宇.再谈隧道衬砌水压力[J].现代隧道技术,2003,40(3):5-10.(WANG Jian-yu.Once more on hydraulic pressure upon lining[J].Modern Tunnelling Technology,2003,40(3):5-10.(in Chinese))
[9]王秀英,王梦恕,张弥.计算隧道排水量及衬砌外水压力的一种简化方法[J].北方交通大学学报,2004,28(1):8-10.(WANG Xiu-ying,WANG Meng-shu,ZHANG Mi.Asimple method to calculate tunnel discharge and external water pressure on lining[J].Journal of Northern Jiaotong University,2004,28(1):8-10.(in Chinese))
[10]皇甫明,谭忠盛,王梦恕,等.暗挖海底隧道渗流量解析解及其应用[J].中国工程科学,2009,11(7):66-70.(HUANGFU Ming,TAN Zhong-sheng,WANG Meng-shu,et al.An analytical solution for water inflow into a subsea tunnel and its application[J].Journal of China Engineering Science,2009,11(7):66-70.(in Chinese))
[11]杨会军,王梦恕.深埋长大隧道渗流数值模拟[J].岩石力学与工程学报,2006,25(3):511-519.(YANG Hui-jun,WANG Meng-shu.Numerical simulation of seepage in deep-buried long and big tunnels[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(3):511-519.(in Chinese))
[2]刘建,刘丹,宋凯.渝怀铁路歌乐山隧道排水的地下水环境负效应评价[J].现代隧道技术,2012,49(4):179-183.(LIU Jian,LIU Dan,SONG Ka.Evaluation of the negative effects on groundwater environment resulted by Geleshan tunnel drainage[J].Modern Tunnelling Technology,2012,49(4):179-183.(in Chinese))
[3]单士军,李耐霞.歌乐山隧道施工过程环境影响分析及建议[J].工业安全与环保,2004,30(11):21-22.(SHANShi-jun,LI Nai-xia.The analysis and suggestion of environmental impact on Geleshan tunnel construction[J].Industrial Safety and Environmental Protection,2004,30(11):21-22.(in Chinese))
[4]刘志春,朱永全,高新强,等.干旱山区隧道施工地下水环境保护技术研究[R].石家庄:石家庄铁道大学,2010.(LIU Zhi-chun,ZHU Yong-quan,GAO Xin-qiang,et al.Study on technology of groundwater environment protection during tunnel construction in the arid mountain area[R].Shijiazhuang:Shijiazhuang Tiedao University,2010.(in Chinese))
[5]付钢,王磊.高压富水地层中隧道衬砌结构设计方法探讨[J].地下空间与工程学报,2007,3(2):252-257.(FUGang,WANG Lei.Study on design method of lining structure of the highway tunnel in deep-lying stratum with highwater level[J].Chinese Journal of Under ground Space and Engineering,2007,3(2):252-257.(in Chinese))
[6]赵瑞,许模,范辰辰.隔挡式背斜区隧道群地下水渗流场模拟演化[J].现代隧道技术,2015,52(3):69-74.(ZHAO Rui,XU Mo,FAN Chen-chen.Numerical simulation of the groundwater seepage field of a tunnel group in an ejective anticline zone[J].Modern Tunnelling Technology,2015,52(3):69-74.(in Chinese))
[7]刘志春,万良勇.地层注浆加固对隧道与地下水相互作用过程中的“双赢”影响效应分析[J].现代隧道技术,2015,52(2):87-96.(LIU Zhi-chun,WAN Liang-yong.Win-win effect of ground consolidation grouting on the interaction between tunnel and groundwater[J].Modern Tunnelling Technology,2015,52(2):87-96.(in Chinese))
[8]王建宇.再谈隧道衬砌水压力[J].现代隧道技术,2003,40(3):5-10.(WANG Jian-yu.Once more on hydraulic pressure upon lining[J].Modern Tunnelling Technology,2003,40(3):5-10.(in Chinese))
[9]王秀英,王梦恕,张弥.计算隧道排水量及衬砌外水压力的一种简化方法[J].北方交通大学学报,2004,28(1):8-10.(WANG Xiu-ying,WANG Meng-shu,ZHANG Mi.Asimple method to calculate tunnel discharge and external water pressure on lining[J].Journal of Northern Jiaotong University,2004,28(1):8-10.(in Chinese))
[10]皇甫明,谭忠盛,王梦恕,等.暗挖海底隧道渗流量解析解及其应用[J].中国工程科学,2009,11(7):66-70.(HUANGFU Ming,TAN Zhong-sheng,WANG Meng-shu,et al.An analytical solution for water inflow into a subsea tunnel and its application[J].Journal of China Engineering Science,2009,11(7):66-70.(in Chinese))
[11]杨会军,王梦恕.深埋长大隧道渗流数值模拟[J].岩石力学与工程学报,2006,25(3):511-519.(YANG Hui-jun,WANG Meng-shu.Numerical simulation of seepage in deep-buried long and big tunnels[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(3):511-519.(in Chinese))