The invention provides an earth and rockfill dam time-domain
electric field monitoring system and a precise imaging method, and belongs to the technical field of real-time monitoring of earth and rockfill dam leakage safety problems. The
monitoring system comprises a communication cable, a drilling cable, a drilling
electrode, an integrated electrical method host, a
data acquisition and processingplatform and the like; earth and rockfill dam earth
electricity information is transmitted to the input end of the communication cable through the drilling cable, then transmitted to the integrated electrical method host through the output end of the communication cable and finally transmitted to the
data collecting and
processing platform. The precise imaging method comprises data observation and data inversion imaging. According to the
monitoring system, a transverse, longitudinal and time-direction three-direction dynamic observation
layout is applied, a dam body multi-hole measuring linecombined
observation method is combined, real-time accurate imaging of a geoelectric field can be achieved, complete
coverage type monitoring of the earth and rockfill dam is facilitated, one-time arrangement is achieved, the service cycle is long, and
mass data can be obtained compared with a traditional method; according to the
observation system, the
time shifting electrical method technology is applied to normalized monitoring of the earth and rockfill dam, and breakthrough of the monitoring and detection
integrated technology can be achieved.