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Document Details

Evaluation of Hot Water Drills
Authors: Bassler KH and Miller H
Year: 1988
Periodical/Journal: Ice Core Drilling. Proceedings of the Third International Workshop on Ice Drilling Technology (eds C. Rado and D. Beaudoing)
Page Range: 116-122

Caused by the increasing geophysical and glaciological field investigations in polar regions more and more drill holes in cold firn and ice are required. Using hot water drilling a fast drill hole production is possible. Existing evaluations for hot water drills were derived from drill tests in temperate ice for small hole diameters. The present paper shows a possibility, based on thermal calculations in ground engineering to evaluate the necessary hear and the drill rate dependent on:

  • the hole diameter,
  • the firn (ice) density,
  • the in-situ temperature of the firn (ice),
  • the water flux,
  • the water temperature.

For quick estimates some graphs for fixed hole diameters are given.

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