城际铁路大直径泥水盾构施工风险及对策——以佛莞城际铁路狮子洋隧道工程为例
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摘要
盾构直径过大,其成本和安全风险也将成倍增加。结合佛莞城际铁路狮子洋隧道工程地质特性和工程重难点,分析大直径盾构在高水压、强透水性、复合地层施工过程中设备选型、长距离独头掘进、穿越软硬不均地层与断层破碎带等存在的风险。具体从常压刀盘、泥浆环流系统选型设计以提高设备适应性,制定开挖管理与泥浆管理并重的掘进参数控制方法,针对上软下硬和断层破碎带地层的施工风险控制等方面提出相应对策,规避地质重大风险,确保大直径水下盾构隧道的施工安全。
The cost and risk increase with shield diameter increase. Based on Shiziyang Tunnel on Foshan-Dongguan Intercity Railway, the risks existed in equipment type selection, long-distance dead-end tunneling, upper-soft lower-hard strata and fault and fracture zone during large-diameter slurry shield boring in complex strata with high water pressure and strong permeability are analyzed. The equipment adaptability is improved from the selection of atmospheric pressure cutterhead and slurry circulation system; the excavation parameter control method for excavation management and slurry management is determined; and construction countermeasures for upper-soft lower-hard strata and fault fracture zones are proposed to avoid significant geological risks and ensure construction safety of underwater large-diameter shield.
The cost and risk increase with shield diameter increase. Based on Shiziyang Tunnel on Foshan-Dongguan Intercity Railway, the risks existed in equipment type selection, long-distance dead-end tunneling, upper-soft lower-hard strata and fault and fracture zone during large-diameter slurry shield boring in complex strata with high water pressure and strong permeability are analyzed. The equipment adaptability is improved from the selection of atmospheric pressure cutterhead and slurry circulation system; the excavation parameter control method for excavation management and slurry management is determined; and construction countermeasures for upper-soft lower-hard strata and fault fracture zones are proposed to avoid significant geological risks and ensure construction safety of underwater large-diameter shield.
引文
[1] 杨文武.盾构法水下隧道工程技术的发展[J].隧道建设,2009,29(2):145.YANG Wenwu.Development of underwater shield-bored tunnels [J].Tunnel Construction,2009,29(2):145.
[2] 郭卫社,梁奎生,游永峰.台山核电越海盾构隧洞主要风险及措施研究[J].现代隧道技术,2015,52(6):195.GUO Weishe,LIANG Kuisheng,YOU Yongfeng.Study of the main risks and countermeasures for the sea-crossing shield tunnel of the Taishan Nuclear Power Station [J].Modern Tunnelling Technology,2015,52(6):195.
[3] 姚占虎.南京纬三路过江通道工程盾构段施工风险评估[J].现代隧道技术,2015,52(4):49.YAO Zhanhu.Construction risk assessment for the shield-driven section of the Nanjing Weisan Road River-crossing Project [J].Modern Tunnelling Technology,2015,52(4):49.
[4] 石新栋,吴全立.南京纬三路过江盾构隧道工程主要地质问题及其对策[J].隧道建设,2011,31(6):652.SHI Xindong,WU Quanli.Geological conditions and construction countermeasures of Weisanlu River-crossing Shield-bored Tunnel in Nanjing [J].Tunnel Construction,2011,31(6):652.
[5] 郭信君,闵凡路,钟小春,等.南京长江隧道工程难点分析及关键技术总结[J].岩石力学与工程学报,2012,31(10):2154.GUO Xinjun,MIN Fanlu,ZHONG Xiaochun,et al.Summaries of key technologies and difficulties in Nanjing Yangtze River Tunnel Project [J].Chinese Journal of Rock Mechanics and Engineering,2012,31(10):2154.
[6] 郑清君.狮子洋隧道盾构施工危险源分析及对策[J].隧道建设,2011,31(5):605.ZHENG Qingjun.Risk factor analysis and countermeasures for shield tunneling:Case study on Shiziyang Tunnel [J].Tunnel Construction,2011,31(5):605.
[7] 洪开荣,陈馈,冯欢欢.中国盾构技术的创新与突破[J].隧道建设,2013,33(10):801.HONG Kairong,CHEN Kui,FENG Huanhuan.The innovation and breakthrough of shield technology in China [J].Tunnel Construction,2013,33(10):801.
[8] 郑清君.狮子洋隧道虎门港沙田港区地层破碎段盾构掘进施工技术研究[J].隧道建设,2011,31(增刊2):35.ZHENG Qingjun.Shield tunneling technology of stratum-broken section:Case study on Shatiangang zone of Humen Port [J].Tunnel Construction,2011,31(S2):35.
[9] 肖明清,蒋超,邓朝辉.佛莞城际铁路狮子洋隧道的几个关键技术问题[J].铁道工程学报,2015,32(3):62.XIAO Mingqing,JIANG Chao,DENG Chaohui.Several key technical problems of Foshan-Dongguan Intercity Railway Shiziyang Tunnel [J].Journal of Railway Engineering Society,2015,32(3):62.
[10] 蒋超.佛莞城际铁路狮子洋隧道设计综述[J].隧道建设,2017,37(2):207.JIANG Chao.Summary of design of Shiziyang Tunnel on Foshan-Dongguan Intercity Railway [J].Tunnel Construction,2017,37(2):207.
[11] 陈健,黄永亮.超大直径泥水盾构施工难点与关键技术总结[J].地下空间与工程学报,2015,11(增刊2):637.CHEN Jian,HUANG Yongliang.Summary of key technologies and construction difficulties in large diameter slurry shield tunnel [J].Chinese Journal of Underground Space and Engineering,2015,11(S2):637.
[12] 杜闯东.基岩破碎带与软硬不均等不良地层盾构掘进技术分析[J].隧道建设,2015,35(9):920.DU Chuangdong.Analysis of shield tunneling in fractured bed rock zones and upper-soft lower-hard ground [J].Tunnel Construction,2015,35(9):920.
[13] 杨书江,孙谋,洪开荣.富水砂卵石地层盾构施工技术[M].北京:人民交通出版社,2011:175.YANG Shujiang,SUN Mou,HONG Kairong.Shield construction technology for water-rich sandy cobble ground [M].Beijing:China Communications Press,2011:175.
[14] 刘继国,郭小红.超大直径海底隧道盾构选型研究[J].现代隧道技术,2009,46(1):51.LIU Jiguo,GUO Xiaohong.Study of the selection of super-large-diameter shield for an undersea tunnel [J].Modern Tunnelling Technology,2009,46(1):51.
[15] 王梦恕.中国盾构和掘进机隧道技术现状、存在的问题及发展思路[J].隧道建设,2014,34(3):179.WANG Mengshu.Tunneling by TBM/shield in China:State-of-art,problems and proposals [J].Tunnel Construction,2014,34(3):179.
[16] 钱七虎.水下隧道工程实践面临的挑战、对策及思考[J].隧道建设,2014,34(6):503.QIAN Qihu.Challenges in construction of underwater tunnels and countermeasures [J].Tunnel Construction,2014,34(6):503.
[2] 郭卫社,梁奎生,游永峰.台山核电越海盾构隧洞主要风险及措施研究[J].现代隧道技术,2015,52(6):195.GUO Weishe,LIANG Kuisheng,YOU Yongfeng.Study of the main risks and countermeasures for the sea-crossing shield tunnel of the Taishan Nuclear Power Station [J].Modern Tunnelling Technology,2015,52(6):195.
[3] 姚占虎.南京纬三路过江通道工程盾构段施工风险评估[J].现代隧道技术,2015,52(4):49.YAO Zhanhu.Construction risk assessment for the shield-driven section of the Nanjing Weisan Road River-crossing Project [J].Modern Tunnelling Technology,2015,52(4):49.
[4] 石新栋,吴全立.南京纬三路过江盾构隧道工程主要地质问题及其对策[J].隧道建设,2011,31(6):652.SHI Xindong,WU Quanli.Geological conditions and construction countermeasures of Weisanlu River-crossing Shield-bored Tunnel in Nanjing [J].Tunnel Construction,2011,31(6):652.
[5] 郭信君,闵凡路,钟小春,等.南京长江隧道工程难点分析及关键技术总结[J].岩石力学与工程学报,2012,31(10):2154.GUO Xinjun,MIN Fanlu,ZHONG Xiaochun,et al.Summaries of key technologies and difficulties in Nanjing Yangtze River Tunnel Project [J].Chinese Journal of Rock Mechanics and Engineering,2012,31(10):2154.
[6] 郑清君.狮子洋隧道盾构施工危险源分析及对策[J].隧道建设,2011,31(5):605.ZHENG Qingjun.Risk factor analysis and countermeasures for shield tunneling:Case study on Shiziyang Tunnel [J].Tunnel Construction,2011,31(5):605.
[7] 洪开荣,陈馈,冯欢欢.中国盾构技术的创新与突破[J].隧道建设,2013,33(10):801.HONG Kairong,CHEN Kui,FENG Huanhuan.The innovation and breakthrough of shield technology in China [J].Tunnel Construction,2013,33(10):801.
[8] 郑清君.狮子洋隧道虎门港沙田港区地层破碎段盾构掘进施工技术研究[J].隧道建设,2011,31(增刊2):35.ZHENG Qingjun.Shield tunneling technology of stratum-broken section:Case study on Shatiangang zone of Humen Port [J].Tunnel Construction,2011,31(S2):35.
[9] 肖明清,蒋超,邓朝辉.佛莞城际铁路狮子洋隧道的几个关键技术问题[J].铁道工程学报,2015,32(3):62.XIAO Mingqing,JIANG Chao,DENG Chaohui.Several key technical problems of Foshan-Dongguan Intercity Railway Shiziyang Tunnel [J].Journal of Railway Engineering Society,2015,32(3):62.
[10] 蒋超.佛莞城际铁路狮子洋隧道设计综述[J].隧道建设,2017,37(2):207.JIANG Chao.Summary of design of Shiziyang Tunnel on Foshan-Dongguan Intercity Railway [J].Tunnel Construction,2017,37(2):207.
[11] 陈健,黄永亮.超大直径泥水盾构施工难点与关键技术总结[J].地下空间与工程学报,2015,11(增刊2):637.CHEN Jian,HUANG Yongliang.Summary of key technologies and construction difficulties in large diameter slurry shield tunnel [J].Chinese Journal of Underground Space and Engineering,2015,11(S2):637.
[12] 杜闯东.基岩破碎带与软硬不均等不良地层盾构掘进技术分析[J].隧道建设,2015,35(9):920.DU Chuangdong.Analysis of shield tunneling in fractured bed rock zones and upper-soft lower-hard ground [J].Tunnel Construction,2015,35(9):920.
[13] 杨书江,孙谋,洪开荣.富水砂卵石地层盾构施工技术[M].北京:人民交通出版社,2011:175.YANG Shujiang,SUN Mou,HONG Kairong.Shield construction technology for water-rich sandy cobble ground [M].Beijing:China Communications Press,2011:175.
[14] 刘继国,郭小红.超大直径海底隧道盾构选型研究[J].现代隧道技术,2009,46(1):51.LIU Jiguo,GUO Xiaohong.Study of the selection of super-large-diameter shield for an undersea tunnel [J].Modern Tunnelling Technology,2009,46(1):51.
[15] 王梦恕.中国盾构和掘进机隧道技术现状、存在的问题及发展思路[J].隧道建设,2014,34(3):179.WANG Mengshu.Tunneling by TBM/shield in China:State-of-art,problems and proposals [J].Tunnel Construction,2014,34(3):179.
[16] 钱七虎.水下隧道工程实践面临的挑战、对策及思考[J].隧道建设,2014,34(6):503.QIAN Qihu.Challenges in construction of underwater tunnels and countermeasures [J].Tunnel Construction,2014,34(6):503.
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