Rapid Excavation and Mining (REAM) System - Revisited
Abstract
The rapid excavation and mining (REAM) system utilizes large- and medium-caliber smoothbore cannons to launch inert kinetic energy (KE) projectiles to spall rock fascia for mining and excavation applications. Historically, field tests have been conducted against various obstacles, and two test bores 3.5 m in diameter were excavated into granite, one of which was taken to a test depth of 17 m. A cost analysis has been performed using the experimental data collected from the program in the 1970s. Advance rates that were limited only by the estimated ability to remove muck were assumed in this analysis. These assumptions lead to boring rates that were not only more than three times faster than conventional drill and blast (D&B) techniques but also considerably cheaper. The economic analysis has been recomputed with the aid of empirical cost functions from the U.S. Bureau of Mines (USBOM). It has been found that, under certain circumstances, the REAM technique uses less propellant per kilogram of ore produced than conventional D&B methods. Also, if cost is not an issue, then the REAM technique can provide advance rates unobtainable by conventional methods.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2000
- Accession Number
- ADA384174
Entities
People
- Edward A Fisher
- Josephy M. Heimeri
- Paul J. Conroy
Organizations
- United States Army Research Laboratory