Stability Analysis of Backfill Curtain and Its Application in Deep Safety Mining

摘要

This paper introduced the structure, facture and installation of backfill curtain, the mechanics model which originated from deep mining of glacis folium vein in Xiangxi Gold Mine was created, its stability was analyzed in different stage of backfill, and the parameters were obtained. Field experiment shows that the technique of backfill with curtain is effective in disposing mined out area, and for its characteristic of dehydrating along with the whole curtain, the filled slurry gets to saturation of 78% - 80% in 25 min, and provides initial support to stope roof in 60 min. In addition, the technique makes it possible that filling and mining can be done simultaneously, so that mining cycle was hastened, mining efficiency was improved.