Abstract: To solve the problems of poor recovery and high dilution when using the sublevel caving method for inclined medium-thick orebody， a vertical zone and combination ore-drawing scheme was proposed. Three drawing tests were experimentally conducted by 3D physical modeling， in which the complete cutoff grade drawing was used in test (1)， and the combination drawing was used in test (2) and test (3)，respectively. The main difference between test (2) and test (3) lied in that the dilution rate in footwall zone was increased in test (3). The tests results show that in test (1)， the ore recovery rate (η=86.3%) and the corresponding rock dilution rate(ρ=29.5%) is the highest; the recovery rates of the two combination drawing tests are both up to more than 80%， but with a decreased rock dilution rate of about 11.3% (ρ=18.2%) compared with the complete cutoff grade drawing test. The economic evaluation on the three groups of tests show that test (2) is the optimal scheme， whose feasibility and superiority are further verified in the mine.

Key words: inclined medium-thick orebody, sublevel caving, vertical zone and combination ore-drawing, ore recovery index, economic evaluation