Abstract
To provide a safe mining environment for pillar recovery in residual mine, a new mine backfill method, that is geofabriform cofferdam mine backfill method, was proposed based on mining environment regeneration theory, and was verified by field industrial experiment. The results indicate that the multi-points backfill mode can improve the roof-contact effect of backfill when taking the cofferdam as the working platform for goaf backfill. An unfavorable mining environment can be improved by a cofferdam made with geofabriform. The geofabriform cofferdam mine backfill method could provide enormous economic benefits, prevent ground subsidence and contribute to the enhancement of ore recovery and green mining.