High Speed Projectile Impact for Mining and Tunneling -Project REAM.

摘要

Results of extensive field tests of a new and powerful method of hard rock excavation are presented in this report. The method,known by the acronym REAM (Rapid Excavation and Mining),employs high velocity,smooth bore cannons to efficiently deliver energy to the rock and has been demonstrated for underground tunneling,drilling,surface benching,scaling,and secondary breakage in hard granitic rock at the Hope Valley Mine test site in California.