HOT WATER DRILL FOR TEMPERATE ICE.
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.
Citation Information
Publication Year | 1984 |
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Title | HOT WATER DRILL FOR TEMPERATE ICE. |
Authors | Philip L. Taylor |
Publication Type | Conference Paper |
Publication Subtype | Conference Paper |
Index ID | 70012887 |
Record Source | USGS Publications Warehouse |