Abstract: For recovering residual ores in isolation layer, based on research on regional ground pressure and the destruction of fillings, the combination of slice support and drifted mining was adopted, the different safety supporting was flexibly applied in different regions with individual actual situation. This scheme realized a safe and high efficient recovery of mineral resources in exploration of isolation layer in No.1 mining area of -627 m middle section, and No.5 mining area of -527 m middle section.

Key words: Isolation layer, Ground pressure, Filling body, Support