EFFECT OF EXPLOSIONS ON SNOW STRUCTURES

During the summar of 1960, tests were conducted on the Greenland Ice Cap to study the resistance and behavior of snow structures to dynamic loading from a surface or above-surface air blast of 4 or 32 lb. spherical cast TNT. A number of small-and full-scale vertical and full-size horizontal arches w...

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Bibliographic Details
Main Authors: Szostak, Henryk, Benert, Robert
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1966
Subjects:
Snow
Ice and Permafrost
Construction Equipment
Materials & Supplies
Structural Engineering and Building Technology
*EXPLOSION EFFECTS
*SNOW
*STRUCTURES
ARCTIC REGIONS
CONSTRUCTION
FEASIBILITY STUDIES
TNT
Arctic
Greenland
Psi
Ice cap
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0640974
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0640974
Description
Summary:During the summar of 1960, tests were conducted on the Greenland Ice Cap to study the resistance and behavior of snow structures to dynamic loading from a surface or above-surface air blast of 4 or 32 lb. spherical cast TNT. A number of small-and full-scale vertical and full-size horizontal arches were constructed in processed snow pads. Arch spans and arch crown thickness were varied to establish a relation between surface overpressure and the ratio of arch span (S) to arch crown thickness (T). Some correlation was found for vertical structures but none between vertical and horizontal arches. The results show that, for the same charge weight and S/T ratio, the horizontal structures can withstand over 100 psi overpressure, while small-scale vertical arches fail at 20 psi.

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