关键词: 仪器仪表技术, 不接触电极, 交流电法, 视电阻率

Abstract: ：In the case of exposed bedrock,or where contact electrodes are unable or not allowed to use,noncontact electrodes are adopted for electrical detection.Continuous sampling of data enhances the efficiency of alternating electrical detection.Two transmitting frequencies are employed to get the information of different depths,which,to a certain range of depth,functions as depthsounding.Noncontact twofrequency transmitter and receiver were developed.Based on the contrast tests of electrode area and shape,line electrodes were selected and the configuration parameters were derived.Indoor modeling experiment and field faultage investigation were conducted.Results of electrical survey using noncontact electrodes agree with that of other methods for shallow subsurface investigation.

Key words: technology of instrument and meter, non-contact electrode, alternating electrical detection, apparent resistivity