Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8906343 | Cold Regions Science and Technology | 2018 | 9 Pages |
Abstract
Shallow hot-water systems are well-known ice-drilling devices used to create holes for temperature measurements and monitoring of glacier dynamics, basal sliding, and englacial water-pressure. A shallow hot-water ice drill system designed at Jilin University is based on a commercial high-pressure washer, Kärcher HDS 6/14C, that can deliver water at a temperature in the range of 80-155°â¯C, a flow of 4-10â¯L/min and a pressure as high as 14â¯MPa. The system also includes a mast with a sheave on the top and a reel with a 100-m long rubber hose; a 2-m long, 60-mm diameter drill stem; a control and measuring system; sleds; a submersible pump; a return hose; a water tank with an affiliate heating unit; and a small 2-kW generator. Theoretical estimations were performed to predict the rate of penetration and mean diameter of the melted borehole. Experiments with a shallow hot-water drill were carried out in an ice drill testing facility to determine the relationship between the rate of penetration/borehole diameter and the diameter and type of nozzle, hot water temperature, and flowrate. Under a hot water flowrate of 10â¯L/min with a temperature of 60°â¯C, the 1.8-mm and 2-mm nozzles created 98-114-mm diameter boreholes at a penetration rate of 34-37â¯m/h, while a 2.5-mm nozzle produced a 146-156-mm borehole at rate of 26â¯m/h. The deviation between the experimental data and theoretical estimations did not exceed 7%.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth and Planetary Sciences (General)
Authors
Pavel Talalay, Gang Liu, Rusheng Wang, Xiaopeng Fan, Jialin Hong, Da Gong, Bowen Liu, An Liu, Sysoev Mihail,