Water Jet Cutting and Excavation of Hard Rocks by Thermohydraulic Method.
Proc 2D Internat Symp Jet Cutting Technol 1974 Apr; :13 pages
The Bureau of Mines has developed and tested a thermohydraulic method for hard rock kerfing and excavation. Heating induces structural weakness and subsurface damage in rocks and assists fragmentation by water jet impingement. Laboratory and field test results show that this novel combination method overcomes cuttability limitations of the thermal energy process in hard rocks.
Proc. 2D Internat. Symp. Jet Cutting Technol. Apr. 2-4, 1974, St. John's College, Cambridge Eng