Full-Scale Field Test Results of the REAM Concept for Hard Rock Excavation

Abstract

The report describes the results of the full-scale field tests of the REAM concept for hard rock excavation. REAM is an innovative method of rock disintegration which utilizes the impact energy of high velocity projectiles to fracture and eject the rock. The concept was demonstrated by driving a 13-foot- diameter tunnel to a depth of 26 feet in a granitic rock formation at Hope Valley, California. The average mass of rock removed by the 10-pound concrete projectiles impacting at 5000 ft/sec was 3000 pounds. In addition to presenting the rock breakage data, this report discusses the characteristics of the impact ejecta, muck distribution, and wall contour control.)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1973
Accession Number
AD0757116

Entities

People

  • John D. Watson

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • California
  • Cameras
  • Classification
  • Combustion
  • Concrete
  • Construction
  • Contractors
  • Diameters
  • Excavation
  • Field Tests
  • Liquid Propellants
  • Materials
  • Projectiles
  • Propellants
  • Rapid Excavation
  • Test And Evaluation
  • Tunneling

Fields of Study

  • Geology

Readers

  • Explosive Engineering.
  • Geotechnical Engineering.