Water-Jet-Assisted Cutting. Proceedings: Bureau of Mines Open Industry Meeting Held at Pittsburgh, Pennsylvania on June 21, 1984

摘要

The Bureau of Mines has initiated a program to develop a water-jet-assisted rotary cutting system using the conventional bit assisted by a directed water jet operating at moderate pressures (3,000 to 10,000 psi). This water-jet-assisted cutting system has the potential to improve cutting efficiency without increasing machine horsepower or water usage (beyond what is presently used for dust control) or requiring fundamental changes in mining practice. In addition to improvements in productivity, other anticipated benefits of water-jet cutting include reduced generation of respirable dust, elimination of frictional ignitions, increased bit life, reduced fines, and fewer machine vibrations. The papers presented at the open industry meeting discuss the development of water-jet-assisted cutting technology and future application of the technology to a variety of mining techniques including roof drilling and longwall mining.