Aspects of energy requirements for rock drilling

Development of laboratory rock breakage techniques to relate energy and surface area produced by slow compression, drop hammer and stamp mill.

A detailed study of laboratory rotary-percussive
drilling in a wide range of rocks under different
conditions, with the collection of drill cuttings and
measurement of the drill parameters. The correlation
of drill parameters with rock indices by energy concepts
and the developed empirical formula.

Field rotary-percussive drilling studies and
collection of drill cuttings on the basis of laboratory
analysis.