Abstract:In order to explore the influence law and mechanism of different factors on in-situ leaching effect, a seepage model of in-situ leaching of uranium was established, and the significance of the influence of each factor on in-situ leaching effect was explored by the response surface method. In this model, the leaching range with efficient flow rate was determined as the effective leaching range, and the effects of blasting range, injection well pressure difference and well spacing on in-situ leaching effect were analyzed by effective leaching range and flow rate. The results show that the use of blasting to improve the permeability of the ore seam can effectively improve the in-situ leaching effect. Under the small blasting range, the pressure difference of the pumping liquid well is increased, and the in-situ leaching effect increases slowly, and in the larger blasting range, the lifting effect is more significant. With the increase of well spacing, the effective leaching range rises firstly and then drops, and the flow rate gradually decreases. The pressure difference of the pumped well has a good lifting effect on ground leaching, and the flow rate rises approximately linearly with the increase of pressure difference, and the effective leaching range has different growth trends according to different well distances. The influence of three factors on the flow rate is more significant, the impact of the burst range and well distance on the effective leaching range is more significant than that of the pressure difference, and the interaction between the blasting range and the well distance is more significant than that of the other two on the flow.