Accession Number:

AD0272681

Title:

MECHANICS OF CRATER FORMATION IN SAND AND CLAY PRODUCED BY UNDERGROUND EXPLOSIONS

Descriptive Note:

Technical Report

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD ABERDEEN PROVING GROUND United States

Personal Author(s):

• Townsend ,W. H.
• Langseth ,Mark
• Perkins,B. Jr

Report Date:

1961-12-01

Pagination or Media Count:

77.0

Abstract:

Studies of crater dimensions versus shot depth have been made for sand and clay. By using a colored column technique, true crater dimensions and depths have been measured. Mineral and moisture content have been held nearly constant. Shear strength, grain size, soil density, cohesion and plasticity were measured. Accelerations of the ground particle versus distance were measured for shot depths varying from zero to 2 units of scale distance. The values of the acceleration at a given distance from successive explosions at the same depth had an average deviation from the mean value of approximately 25 per cent for both sand and clay. The average deviation of the crater dimensions was less than 10 per cent from the mean for sand and less than 5 per cent for clay

Descriptors:

• CLAY
• CRATERING
• SAND
• UNDERGROUND EXPLOSIONS
• ACCELERATION
• BLAST
• MEASUREMENT
• PARTICLES
• TEST METHODS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE