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Frost evolution in tailings. Final report

Technical Report:

Abstract

A review was carried out on the physical and thermal mechanisms of permafrost evaluation in soils and uranium tailings. The primary mechanism controlling permafrost evolution is conductive heat transfer with the latent heat of fusion of water being liberated as phase change occurs. Depending on the soil properties and freezing rate, pore water can be expelled from the frost front or pore water can migrate towards the frost front. Solute redistribution may occur as the frost front penetrates into the soil. The rate of frost penetration is a function of the thermal properties of the tailings and the climatic conditions. Computer modelling programmes capable of modelling permafrost evolution were reviewed. The GEOTHERM programme was selected as being the most appropriate for this study. The GEOTHERM programme uses the finite element method of thermal analysis. The ground surface temperature is determined by solving the energy balance equations a the ground surface. The GEOTHERM programme was used to simulate the permafrost evolution in the Key Lake Mine tailings located in north central Saskatchewan. The analyses indicated that the existing frozen zones in the tailing pond will eventually thaw if an average snow depth covers the tailings. Hundreds of years are required to  More>>
Publication Date:
Apr 01, 1991
Product Type:
Technical Report
Report Number:
INFO-0383
Reference Number:
SCA: 052002; PA: AIX-24:007807; SN: 93000932580
Resource Relation:
Other Information: PBD: Apr 1991
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; MILL TAILINGS; ICE; SOILS; ARCTIC REGIONS; COMPUTERIZED SIMULATION; CONVECTION; FREEZING; G CODES; KEY LAKE MINE; MELTING; PERMAFROST; SNOW; 052002; WASTE DISPOSAL AND STORAGE
OSTI ID:
10119220
Research Organizations:
EBA Engineering Consultants Ltd., Edmonton, AB (Canada); Atomic Energy Control Board, Ottawa, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE93612749; CNN: AECB Project no. 5.135.1; TRN: CA9200956007807
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[117] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

None. Frost evolution in tailings. Final report. Canada: N. p., 1991. Web.
None. Frost evolution in tailings. Final report. Canada.
None. 1991. "Frost evolution in tailings. Final report." Canada.
@misc{etde_10119220,
title = {Frost evolution in tailings. Final report}
author = {None}
abstractNote = {A review was carried out on the physical and thermal mechanisms of permafrost evaluation in soils and uranium tailings. The primary mechanism controlling permafrost evolution is conductive heat transfer with the latent heat of fusion of water being liberated as phase change occurs. Depending on the soil properties and freezing rate, pore water can be expelled from the frost front or pore water can migrate towards the frost front. Solute redistribution may occur as the frost front penetrates into the soil. The rate of frost penetration is a function of the thermal properties of the tailings and the climatic conditions. Computer modelling programmes capable of modelling permafrost evolution were reviewed. The GEOTHERM programme was selected as being the most appropriate for this study. The GEOTHERM programme uses the finite element method of thermal analysis. The ground surface temperature is determined by solving the energy balance equations a the ground surface. The GEOTHERM programme was used to simulate the permafrost evolution in the Key Lake Mine tailings located in north central Saskatchewan. The analyses indicated that the existing frozen zones in the tailing pond will eventually thaw if an average snow depth covers the tailings. Hundreds of years are required to thaw the tailings. If minimal snow cover is present the extent of the frozen zone in the tailings will increase.}
place = {Canada}
year = {1991}
month = {Apr}
}