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城市密集柏油公路网和坚硬水泥地面给地下遗址考古勘探造成了很大困难,传统的高密度电阻率法需要插置电极,无法在城市环境中使用。电容耦合式电阻率法采用非侵入式的方式,通过特制电极与大地形成电容器产生电流进行电法勘探,特别适合城市硬地表介质的条件。为了检验电容耦合式电阻率法在城市遗址考古勘探中的应用效果,在地处杭州市主城区的吴越捍海塘遗址进行了电容耦合式电阻率法探测试验,采集多个收发距的电法数据,对数据进行反演处理,将反演结果与考古发掘结果进行对比分析。结果表明,反演的电阻率图像推断结果与考古发掘结果基本吻合,电容耦合式电阻率法是城市遗址考古勘探的有效方法,具有广泛的应用前景。
Urban dense asphalt road networks and hard concrete floors cause great difficulties for archeological exploration of underground sites. The traditional high-density resistivity method requires electrodes to be inserted and can not be used in urban environments. Capacitively coupled resistivity method using non-intrusive way, through the special electrode and the earth to form a capacitor to generate electricity current electrical prospecting, especially suitable for urban hard surface media conditions. In order to test the application effect of capacitively coupled resistivity method in the archeological exploration of urban sites, capacitive-coupled resistivity method was used to detect the site of Wuyidonghan sea dam in the main city of Hangzhou. , The data were inverted and compared with the results of archeological excavation inversion results. The results show that the inversion results of resistivity images are in good agreement with the results of archeological excavations. The capacitively coupled resistivity method is an effective method for archeological exploration of urban sites and has wide application prospects.