电容耦合式电阻率法在城市遗址考古勘探中的应用

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。 

The Application of Capacitively-coupled Resistivity Method to Archaeological Exploration of Urban Site

The dense asphalt road and hardened cement floor bring much difficulty to the archaeological exploration of underground urban site,while the traditional high-density resistivity method need to interpose electrodes, so it cannot be used to the urban environment. The capacitively-coupled resistivity method don't have to invade in the earth,through the special electrode consist a capacitor with the earth so that produces current , therefore, it's suitable for the conditions of urban hard surface particularly.In order to test the effect of capacitively-coupled resistivity method in archaeological exploration of urban site, we conducted the capacitively-coupled resistivity exploration in Wuyue seawall which located in Hangzhou main cityarea, and collected the electrical data contain multiple transmitter and receiver distance, then use the data for the inversion processing,finally, compared and analyzed the results of inversion and archaeological excavations. Indicating that the inferred results of resistivity images are consistent with the archaeological excavation results. The capacitively-coupled resistivity method is effective for archaeological exploration of urban sites and has broad application prospects.