地震映像法在铁路隧道隐伏岩溶勘查中的应用
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摘要
宜万铁路沿线的大部分隧道位于岩溶强发育区,埋深大,地质条件复杂,施工难度大,地质灾害严重,为规避风险和确保营运安全,对岩溶隧道进行隐伏岩溶探测,查明隧底隐伏岩溶的位置、大小和空间形态,从而指导风险评估和岩溶处理具有非常重要的意义。本文介绍了地震映像法的工作原理和解释方法并用该方法对宜万铁路岩溶隧道的隧底15~20m深处进行了勘查,探明了多处溶洞和破碎带,证实了该方法在铁路隧道隐伏岩溶勘查中是有效可行的。
Most tunnels along Yiwan railway are located in the area where karst mostly developed,so it makes the construction more difficult and geological disasters more serious.In order to avoid the risk and ensure the safety,it is very important for the risk assessment and karst treatment to explore the hidden karst under the tunnels and to make sure its allocation,size and spatial form.In this paper,we introduced the principle and the interpretation of seismic imaging method,applied it to hidden karst exploration at the depth of 15~20m under the karst tunnels along Yiwan railway,found many karst cavities and fractured zones,and proved this method is effective and efficient in the complicated geologic condition.
Most tunnels along Yiwan railway are located in the area where karst mostly developed,so it makes the construction more difficult and geological disasters more serious.In order to avoid the risk and ensure the safety,it is very important for the risk assessment and karst treatment to explore the hidden karst under the tunnels and to make sure its allocation,size and spatial form.In this paper,we introduced the principle and the interpretation of seismic imaging method,applied it to hidden karst exploration at the depth of 15~20m under the karst tunnels along Yiwan railway,found many karst cavities and fractured zones,and proved this method is effective and efficient in the complicated geologic condition.
引文
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[2]熊章强,张学强.高密度地震映象勘查方法及应用实例[J].地震学报,2004,26(3):313~317.
[3]王林飞,薛荣俊.浅海回填区域的地震映象效果分析[J].中国海洋大学学报,2006,36(增):185~188.
[4]林文太,卞坚耐.地震映象法在港口码头工程地质勘察中的应用[J].港工技术,2001,(1):45~48.
[5]张致付,程志平.物探方法在探测岩溶构造中的应用[J].桂林工学院学报,2003,23(1):41~45.
[6]陈韶光,程志平.公路路基工程勘察的物探方法研究[J].桂林工学院学报,2000,20(2):105~109.
[7]肖克华.综合物探在宋家湾隧道工程勘查中的应用[J].资源环境与工程,2006,20(1):64~66.
[8]孙红亮,雷宛,钟韬,等.岩溶地区地震映像法的资料处理[J].勘察科学技术,2006,(2):60~64.
[9]徐贵来.地震映像勘探技术研究[J].世界核地质科学,2006,23(1):33~37.
[10]李越兴,曹哲明.地震反射波法在宜万铁路岩溶探查中的应用[J].工程地球物理学报,2007,4(2):105~108.
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