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Conference Proceedings

Third Large Open Pit Mining Conference, Mackay, August 1992

Conference Proceedings

Third Large Open Pit Mining Conference, Mackay, August 1992

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Cut-and-Break, a 'New' Method of Rock Excavation

In cut-and-break rock excavation use is made of the fact that breaking rock in tension towards a free face requires a specific energy of excavation which is small in comparison with that required for rock excavation using conventional tools operating by a process of indentation of the rock.
The process of cut-and-break excavation comprises firstly a cutting step in which a groove is cut into the rock surface, followed by a breaking phase in which a tool is inserted into the cut in order to break the rock adjacent to the cut.
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  • Published: 1992
  • PDF Size: 0.753 Mb.
  • Unique ID: P199208010

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