ASSESSMENT THE STABILITY OF TWOLEVEL DUMPS USING "GALENA" SOFTWARE

Abstract

Structure and technology of dumping of the Zhelezny
mine operating dumps, “Kovdorsky GOK” JSC, are
analysed.
The possibility of safety berm narrowing between the
levels of rock dumps up to half of an upper level’s
height is studied. The stability of two-level hard rock
dumps having different values of safety berms’ width
and levels’ height was calculated employing the licensed software “Galena”. The calculations showed
that a construction of dumps having the safety berm
which height is half of the upper level’s height can be
considered a stable one (over the range of varying of
the upper level’s height from 70m to 120 m). The possibility of unloading dump trucks over the edge of a
level’s slope was assessed. It was established that
influence of heavy dump trucks like CAT-785C on the
levels and dumps stability is negligible and doesn’t
violate their stability.