CSAMT法在洪河特大桥勘探中的应用

Application of CSAMT in Foundation Exploration of Honghe Bridge

可控源音频大地电磁法是一种测量卡尼亚电阻率和相位的电磁探测技术,在工程勘查领域取得了显著的应用效果。本文介绍了该方法的探测原理及资料解释,利用GDP32-Ⅱ多功能电法仪对石郑客运专线洪河特大桥址进行了勘查,查明了设计线路下方存在的隐伏断层,为大桥的设计、施工提供了重要的地质资料料。

Controlled source of audio frequency magnetotelluric method （CSAMT） measures Cagnicad resistivity and phase to resolve civil engineering problem. The principle and data processing technique of CSAMT method have been reviewed in the paper. The method has been successfully applied to delineate underlying faults in the foundation of Honghe bridge in the passenger line from Shijiazhuang to Zhengzhou, which provides important geographical materials for the bridge＇ s design and construction.