Use of inclined boreholes as injection holes for filling backfill chambers

Abstract

The latest environmental trends involve the use of renewable energy sources, reducing carbon footprints and minimizing the effects of past human activity. It is therefore very important to minimize the effects of the exploitation of useful minerals by eliminating mining landslides and rock voids. One of the ways to protect them is through drilling works by drilling backfill holes. The authors of the present study show the possibility of adapting diagonal drillings to drill backfill boreholes. It helps to connect voids, caverns or cavities by backfill boreholes through the injection of backfill material into them. The time of pumping the backfill material in the case of vertical and diagonal holes are analyzed.