Accession Number:

ADA003270

Title:

Investigation of Advanced Concepts for Explosive Drilling.

Descriptive Note:

Final rept.,

Corporate Author:

AAI CORP COCKEYSVILLE MD

Personal Author(s):

Report Date:

1974-10-01

Pagination or Media Count:

56.0

Abstract:

A program is being conducted for the Army to evaluate some advanced concepts for explosive drilling and determine the feasibility of adapting the process to the task of producing emplacements for atomic demolition munitions ADM. The approach consists of introducing encapsulated explosive charges into the borehole that explode and fragment the rock at the bottom of the hole into particles that can be removed by any one of several spoils removal methods. Discussions are included of the design, development and testing of the explosive capsules. The capsule design embodies a unique multi-jet, all-plastic, shaped charged concept. An experimental study was conducted to determine how various parameters affected capsule performance. Several experimental holes were drilled in different rock media. The size and quality of the holes produced and the drilling efficiencies achieved are discussed. Projections are made of the explosive requirements and drilling rates that can be expected in producing ADM emplacements.

Subject Categories:

  • Mining Engineering
  • Civil Engineering
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE