Use of an inclined boreholes as an injection holes for filling the backfill chambers

Abstract

The latest environmental trends involve the use of renewable energy sources, reducing the carbon footprint and minimizing the effects of past human activity. It is therefore very important to minimize the effects of 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, cavern or cavity by the backfill boreholes to injection of the backfill material to them. The time of pumping the backfill material in the case of vertical and diagonal holes are analyzed.