复杂隧洞地质缺陷超前探测的综合物探方法
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摘要
在复杂隧洞中存在的含水断裂带、含水岩溶带是导致隧洞塌方、涌水、特大突水事故的直接原因。预报含水不良地质体的结构特征和含水性是隧洞地质灾害超前预报工作的重要内容。采用反射地震法和电磁法结合的综合预报技术作为解决上述问题的方法。在分析不同预报方法特点的基础上,选取TSP203系统和地质雷达法作为两类方法的代表,介绍了它们的工作原理、数据处理方法和资料解释准则。并结合某隧洞地质缺陷超前探测的工程实例,得出了预报结果与开挖情况基本吻合的结论,验证了综合物探方法的可行性和准确性,为重大隧洞工程提供更加准确和科学的预报方法。
The direct reason leading to the accidents of collapse,blow and sudden inflow is the fracture and carst zone with water in the complex tunnel.The important content of advanced prediction work is to predict the structure and water features of the badly geologic body with water.The integrated method of combining the reflecting seismic method with electromagnetic method to solve those problems is adopted.On the basis of analysing the characteristic of prediction methods,we chose the TSP203 and ground penetrating radar methods,describe the working theory,data processing and information interpretation,and obtain the predicted results which are in basic agreement with the excavation status of tunnel works.The integrated geophysical method provides the more scientific and accurate method for important tunnel engineering project.
The direct reason leading to the accidents of collapse,blow and sudden inflow is the fracture and carst zone with water in the complex tunnel.The important content of advanced prediction work is to predict the structure and water features of the badly geologic body with water.The integrated method of combining the reflecting seismic method with electromagnetic method to solve those problems is adopted.On the basis of analysing the characteristic of prediction methods,we chose the TSP203 and ground penetrating radar methods,describe the working theory,data processing and information interpretation,and obtain the predicted results which are in basic agreement with the excavation status of tunnel works.The integrated geophysical method provides the more scientific and accurate method for important tunnel engineering project.
引文
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[5]ZHAO Yonggui,JIANG Hui,ZHAO Xiaopeng.TunnelSeismic Tomography Method for Geological Predictionand Its Application[J].Applied Geophysics,2006,3(2):69-74.
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[12]余志雄,薛桂玉,周创兵.复信号分析技术及其在地质雷达数字处理中的应用[J].岩石力学与工程学报,2005,24(5):798-802.
[2]李术才,李树忱,张庆松,等.岩溶裂隙水与不良地质情况超前预报研究[J].岩石力学与工程学报,2007,26(2):217-225.
[3]周黎明,尹健民,侯炳绅,等.弹性波反射法在地质超前预报中的应用研究[J].长江科学院院报,2008,25(1):61-65.
[4]赵永贵.国内外隧道超前预报技术评价与推介[J].地球物理学进展,2007,22(4):1344-1352.
[5]ZHAO Yonggui,JIANG Hui,ZHAO Xiaopeng.TunnelSeismic Tomography Method for Geological Predictionand Its Application[J].Applied Geophysics,2006,3(2):69-74.
[6]干昆蓉,蒋肃.对隧道施工地质超前预报工作的反思与探讨[J].铁道工程学报,2007,108(9):9-13.
[7]曲海峰,刘志刚,朱合华.隧道信息化施工中综合地质预报技术[J].岩石力学与工程学报,2006,25(6):1246-1251.
[8]史柏生.TSP203地质超前预报系统简介及其应用[J].铁道工程学报,2004,84(4):27-30.
[9]周黎明,刘天佑,刘江平,等.复杂铁路隧道施工地质超前预报中TSP探测技术应用研究[J].铁道工程学报,2008,112(1):37-41.
[10]李大心.探地雷达方法与应用[M].北京:地质出版社,1994.
[11]吴俊,毛海和,应松,等.地质雷达在公路隧道短期地质超前预报中的应用[J].岩土力学,2003,24(增1):154-157.
[12]余志雄,薛桂玉,周创兵.复信号分析技术及其在地质雷达数字处理中的应用[J].岩石力学与工程学报,2005,24(5):798-802.
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