Investigating the seepage characteristics of acid leaching solution affected by surfactant in the ore-bearing layer during the in-situ leaching process can be useful for optimizing the process parameters of uranium ore. Three surfactant leaching solutions of different concentrations were prepared respectively for the agitation leaching experiment, from which the best was screened out for seepage simulation experiment using a self-developed multifunctional physical and chemical seepage test device. The influence of surfactant to seepage characteristics of leaching solution were examined based o...