Development of a Water-jet-assisted Drag Bit Cutting Head for Coal Measure Rock.
Ch 41 in Proc Rapid Excavation and Tunneling Conf Chicago Illinois 6/12-16/83 PP 701-718 :701-718
An ongoing research program at the Colorado School of Mines is investigating the application of low-to-moderate pressure water jets to assist the cutting performance of drag-type cutter bits commonly used on coal mine cutting machinery. The results to date indicate that a water jet directed to impinge the rock in the immediate vicinity of cutter tip can provide significant benefits in terms of reduced cutting forces, prolonged bit life, and less airborne dust, as well as reduced tendency of sparking during cutting. This paper describes the findings of this research effort designed to fully evaluate and optimize the parameters affecting the performance of a combined water-jet-assisted, drag-bit cutting system for coal mine applications.
Ch. 41 in Proc. Rapid Excavation and Tunneling Conf., Chicago, Illinois, 6/12-16/83, PP. 701-718