Method of measuring seepage flow velocity by electrolytic polarization

The invention discloses a method of measuring a seepage flow velocity by electrolytic polarization. The method comprises the following steps of arranging an electrolysis electrode used for generating the electrolytic polarization to form ionic pulses; arranging a conductivity electrode used for measuring system conductivity to sense the change of ionic concentration; applying a direct voltage to the electrolysis electrode for a certain time, and at the same time drawing a conductivity change curve through conductivity change measured by the conductivity electrode; on the conductivity change curve subjected to smoothing, taking the time that the electrolysis electrode starts to apply the direct voltage as a zero point to solve the time that a conductivity maximum value or a conductivity minimal value occurs; measuring a flow velocity according to the time the conductivity extreme values occur and calculation of electrode spacing of the two electrodes; calculating an actual flow velocity according to a correction coefficient a and a compensating factor b which are measured by calibration. The method provided by the invention is simple and convenient to operate; no new objects are introduced in a tracer process; no environment pollution exists; the measuring distance required by the method is short; velocity components in multiple directions can be measured at the same time, and a continuous measurement method is provided for seepage monitoring.