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HOT WATER DRILL FOR TEMPERATE ICE.

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Abstract

The development of a high-pressure hot-water drill is described, which has been used reliably in temperate ice to depths of 400 meters with an average drill rate of about 1. 5 meters per minute. One arrangement of the equipment weighs about 500 kilograms, and can be contained on two sleds, each about 3 meters long. Simplified performance equations are given, and experiments with nozzle design suggest a characteristic number describing the efficiency of each design, and a minimum bore-hole diameter very close to 6 centimeters for a hot water drill. Also discussed is field experience with cold weather, water supply, and contact with englacial cavities and the glacier bed.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
HOT WATER DRILL FOR TEMPERATE ICE.
Year Published:
1984
Language:
English
Publisher:
US Army Cold Regions Research & Engineering Lab
Publisher location:
Hanover, NH, USA
Larger Work Title:
CRREL Special Report (US Army Cold Regions Research and Engineering Laboratory)
First page:
105
Last page:
117
Conference Title:
Ice Drilling Technology, Proceedings of the Second International Workshop/Symposium.
Conference Location:
Calgary, Alberta, Can