An Investigation of a Concept of Limiting the Effects of Cratering Detonations,

Abstract

Experiments were conducted to investigate a concept of limiting some adverse effects of using explosives to break rock. Specifically, it was hypothesized that a planar zone of explosively fractured rock might attenuate the stress wave generated by an explosive charge, and thereby serve to protect a structural plane, such as a presplit surface, from damage. The zone of explosively fractured rock has been designated a buffer zone. The overall concept would be to place buffer zones between structural rock surfaces and the main excavation charges. Peak particle velocities generated by 200-lb, deeply buried cratering charges were measured both with and without the presence of intervening buffer zones. The results were not conclusive as to the effectiveness of buffer zones, and improved experimental procedures may be required in further investigations. (Modified author abstract)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1974
Accession Number
AD0780707

Entities

People

  • Bruce B. Redpath

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Cratering
  • Detonations
  • Excavation
  • Explosions
  • Explosive Charges
  • Explosives
  • Particles
  • Physical Properties
  • Stress Waves
  • Stresses
  • Waves

Readers

  • Explosive Engineering.