Abstract:Through the establishment of model of seepage-electric test,the temporal-spatial domain parameters of geoelectric field in the course of seepage are achieved by the network parallel electrical instrument(NPEI). For the first time,the geoelectric field transient response is obtained in space. Based on the characteristics of potential and current isochrones and apparent resistivity isochronous section,the experiments show that natural electric field represents rising trend in the temporal-spatial field in the course of seepage. The isochronal extreme point of natural potential indicates the position of seepage;and natural electric field possesses ahead of water surface. The fluid surface and the seepage velocity can be accurately ascertained through exciting voltage and exciting current of primary field;and it is suitable for revealing asymmetric seepage law of geologic body. The real-time apparent resistivity images have the ability to track and identify seepage zones and the quantity of water. With apparent resistivity stepping down,groundwater seepage tends to be saturated. Through the practical geoelectric field monitoring in the Wugou Mine,the water inrush of 1013 working face is successfully predicted ahead of two days. The isochronal extreme point of laneway natural potential indicates the position of water inrush. Apparent resistivity isochronal section indicates water-head horizon of water inrush. The spatial synchronization monitoring technology of geoelectric field is adopted in mine;and the real-time monitoring of the coal floor water disaster will be feasible. It possesses extensive application to mine water inrush prevention and controlling.