Underground mining process without building tailings pond

The invention relates to an underground mining process without building a tailing pond. The underground mining process comprises the following steps: counting total tailing quantity data generated ina mining area and residual tailing quantity data after a goaf is filled; planning and selecting a gravel aggregate material field within a preset range of the mining area, and the formed empty area meeting the storage requirement for the remaining tailing amount; mining ores and waste rocks in the mining area, and sorting the ores to generate concentrates and tailings; crushing waste rocks produced by mining and waste rocks produced by sorting, and screening the crushed materials according to a preset size to form gravel aggregates and screening residues; and filling the tailings or the screened residues into the goaf. After the ores and waste rocks are mined, the goaf for containing tailings is formed, and the size of the goaf meets the storage requirements of tailings generated by ore sorting and needed cementin