Step liquid collecting method for ion type rare earth ore in-situ mining process

The invention discloses a stepped liquid collecting method for an ion type rare earth mine in-situ mining process, and aims at ion type rare earth mines with high mountains, steep slopes or large ore mass. Step division and liquid collection facility arrangement are carried out according to geological conditions such as liquid injection mining area, landform and rock stratum occurrence; a plurality of layers of immersion liquid flow guide holes, immersion liquid collection ditches and rainwater drainage ditches are arranged from top to bottom, so that ore leaching liquid is collected step by step, and natural rainfall is drained step by step; an anti-seepage curtain is constructed along a mountain foot to prevent ore leaching liquid from overflowing and leaking; an immersion liquid collecting well with multiple layers of immersion liquid flow guide holes is arranged in a liquid accumulation area on the inner side of the anti-seepage curtain, ore leaching liquid is recycled, and the water level of the liquid a