In　order　to　study　the　crack　pattern　of　Beishan　granite　under　a　single　normal　and　inclined　disc　cutter,　a　series　of　linear　cutting　experiments　were　conducted.　During　the　tests,　a　constant　cross-section　disc　cutter　with　a　diameter　of　17.　in.　was　used　and　a　block　of　Beishan　granite　with　the　size　of　1000.　×.　1000.　×.　600.　mm　(Length.　×.　Width.　×.　Height)　was　adopted.　After　the　experiments,　it　is　found　that　in　the　rock　sample,　there　is　a　broken　area　beneath　the　cutting　groove　with　variable　degrees　of　fragmentation.　Based　on　the　crack　pattern　and　crack　density,　the　rock　sample　is　divided　into　the　re-compacted　zone,　the　crushed　and　crack　zone,　and　the　intact　rock　zone.　Meanwhile,　the　size　and　area　of　these　zones　were　analyzed　and　the　corresponding　ultrasonic　velocities　were　measured.　It　is　shown　that　the　crack　patterns　for　normal　and　inclined　cuttings　at　the　same　penetration　depth　are　greatly　different　due　to　different　included　angles　and　cutting　forces　in　the　two　scenarios.　As　the　penetration　of　inclined　cutting　increases,　the　size　and　area　of　various　zones　expand　significantly.　In　addition,　the　ultrasonic　test　reveals　that　the　ultrasonic　velocity　of　each　zone　agrees　well　with　the　degree　of　fragmentation　and　the　velocities　of　corresponding　zones　for　different　scenarios　are　similar.　©　2015　Elsevier　Ltd.