浅层地震反射波法在芜湖城南过江隧道勘察中的应用

以芜湖城南过江隧道工程为依托，采用浅层地震反射波法对隧道沿线工程场地进行勘察，对勘探区下伏地层起伏形态、厚度、埋深以及隐伏断裂等进行了分析。结果表明:勘探区内未发现隐伏断裂构造分布，第四系地层从上至下为粉质黏土层、粉细砂层、粉砂岩层；基岩顶界面埋深62.5~66.5 m，浅层地震勘探在ZK5钻孔位置推测粉砂岩层顶、基岩顶界面的地层深度分别为24，63 m，钻孔揭露的对应地层深度分别为22.76，61.26 m，两者反映的地层基本一致。

Application of Shallow Seismic Reflected Wave Method in Survey of River-crossing Tunnel on the South of Wuhu

Along the river-crossing tunnel on the south of Wuhu, the investigation was made by shallow seismic reflected wave method to analyze the undulate shape, thickness, buried depth and hidden faults of the strata lying under the exploration area. The result shows that, in this exploration area, the distribution of hidden faults is not found, and the quaternary strata may be the layers of silty clay, silty-find sand and silty rock from top to bottom; the buried depth of the interface of bedrock top is 62.5~66.5 m, and it is speculated by shallow seismic exploration at the position of drillhole ZK5 that the interface of silty rock head and bedrock top lie at the depth of 24 m and 63 m in the strata, respectively, which the stratum is consistent to the depth of 22.76 m and 61.26 m obtained by drilling.