Deep sylvite ore dissolution mining system

The invention relates to a deep sylvite ore solution mining system which comprises a water injection well (1), a brine mining well (2), an inflating device (3) and a brine mining device (4), the water injection well (1) is arranged in a solution mining area, the lower end of the water injection well (1) extends into a deep salt mine layer of the solution mining area, and a solvent is injected into the deep salt mine layer. And the lower end of the brine mining well extends into the deep salt mine layer. The gas pipeline (31) is arranged in the solution mining area, the front end of the gas pipeline (31) is communicated with the air compressor (32), and the tail end of the gas pipeline (31) extends into the deep salt mine layer. The air compressor pumps high-pressure air into the deep salt mine layer through the gas conveying pipeline, the solvent permeates into the deep salt mine layer through the high-pressure air, potassium salt in the deep salt mine layer is dissolved to obtain ore dissolving brine, the or