Abstract：According to the properties that the convection heat transfer in fractured rock block is affected by geoelectric field in the process of in-situ leaching，the model of convection heat transfer under geoelectric field has been brought out；and the influences have been investigated through the experiments. The following results can be drawn. (1) The geoelectric field affects the properties of convection heat transfer obviously；and the influential degree is related with the heat flux，the seepage velocity of liquid，the characters of liquid and so on. (2) The convection heat transfer coefficient increases with the increase of forward electric field voltage，and decreases with the increase of the reversed one. (3) Under the action of geoelectric field，the variation amplitude of convection heat transfer coefficient with low heat flux is evidently higher than that with high heat flux. (4) The effect of the geoelectric field on the convection heat transfer in fractured rock block is weakened gradually with the increase of the seepage velocity of liquid. (5) The higher the mineralization of solution in fractured rock block is，the greater the influence of geoelectric field on the convection heat transfer is.
