The invention discloses a combined mixed-
discharge technology for mining barren rock soil and solidified
tailings, which is capable of systematically researching burying characteristics, hydrogeologic conditions, mining process and discharged refuse materials of natural geology and foundation rock
layers of the areas with a refuse dump and physico-mechanical properties of the foundation, analyzing and calculating relative parameters of the refuse dump, then analyzing
bearing capacity of the refuse dump and respectively calculating settlement capacity and heaving floor of the foundation of the refuse dump according to limiting equilibrium principle, designing the solidified
tailings (7) into a trapezoidal structural body with upper wide and bottom narrow and distributing the solidified
tailings in various platforms of the refuse dump at certain intervals to form a mining barren rock soil and solidified tailing combined mixed-
discharge refuse dump. The mining barren rock soil and solidified tailing combined mixed-
discharge refuse dump is subjected to elastoplasticity finite-
element analysis, ground water transfusion
field analysis and stability and reliability analysis, and finally soil discharge technology and soil discharge parameters of the mining barren rock soil and solidified tailing combined mixed-discharge refuse dump are optimized. By the aid of the combined mixed-discharge technology for the mining barren rock soil and solidified tailings, safety potential hazards existing in tailing warehouses are eliminated, the problem of difficulty in
land acquisition for construction of the tailing warehouses is solved, normal production of mines can be guaranteed, and foundation construction cost of the tailing warehouse and long-distance transporting cost of the tailings and operation cost are all saved.