ABSTRACT
ABSTACT: Most of the rock cutting experiments conducted by various investigators dealt with intact materials, despite the importance of discontinuities and their effects on cutting parameters. Furtheremore very limited research have been conducted in cutting jointed rock under saturated conditions. Under in situ conditions, moisture is present in geological layers, therefore there is a need to investigate cutting parameters under such conditions and to compare with dry and ambient moisture content to see the extent of effect. Geological beds often are formed by different layers, for this reason it was decided to investigate the situation where different geological materials are in succession.
