Development of Technology for Filling Voids between Metal Frame Support and Adjacent Rock Mass by Foam Materials

Resumo

The problem connected with the mine support with metal frames in unstable rock mass subjected to stoping is analyzed. In terms of the complicated geological conditions of the Orlov mine (East Kazakhstan), the application of Blok-Fil phenol resin in filling voids and domes after rock falls in the gap between the metal frames and roof is tested at the laboratory and pilot scale. It is found that owing to complete filling of voids with resin, no dynamic loads on the support due to rock falls and self-heating of ore and mine air are observed.