High Energy Impact Rock Breakage Research Program

Abstract

The purpose of this program is to study the effect of factors such as tool shape, blow energy, single and multiple location impacts and spacing on the fragmentation of hard rock. The major activities within the project include: Theoretical analysis and parameter study; fracture tests on barre granite; and, field tests in various formations. Annual results are reported herein for each of these activity areas. The goal of the program is to obtain a better understanding of mechanical rock breakage in order to provide for a faster, more economical method of underground excavation in hard rock formations to be eventually developed.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1972
Accession Number
AD0745008

Entities

People

  • Joel W. Hollenberg
  • Lee W. Yaros
  • Mukund D. Gangal

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Compressive Strength
  • Computational Science
  • Confidence Limits
  • Energy Levels
  • Equations
  • Excavation
  • Field Tests
  • High Energy
  • Imaging Techniques
  • Impact Tests
  • Integral Equations
  • Materials
  • Mechanics
  • New Jersey
  • Tensile Strength
  • Tensile Stress
  • Tungsten Carbides

Readers

  • Explosive Engineering.
  • Seismology
  • Systems Analysis and Design

Technology Areas

  • Space