Abstract: Focusing on the mining of steeply inclined fractured orebody with medium thickness， based on the induced caving method using the following-vein drift， the relationship between the following-vein mining drift position and the dip angle of orebody was studied through physical simulation experiment combined with comprehensive analysis with recovery and dilution ratios as the quantitative and economic indices. The results are as follows: the recovery index is better when the following-vein drifts of both the upper and lower section are in the best position; the ratio of the distance from drift to footwall to the thickness of orebody has a different impact on the recovery and dilution ratios at the different dip angle of orebody; the best mining drift position gradually moves towards the footwall of orebody with the decrease of the dip angle of orebody; the scheme proposed is not applicable when the dip angle of orebody is less than 75°. According to the experimental results and mining conditions， the optimum mining drift position is determined as reference for similar mines.

Key words: steeply inclined fractured orebody with medium thickness, induced caving, mining drift, recovery ratio, dilution ratio