Accession Number : AD0675411
Title : INVESTIGATION OF SUBSURFACE DRAINAGE AT BMEWS FACILITY, THULE, GREENLAND.
Descriptive Note : Special rept.,
Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Personal Author(s) : McAnerney,John M.
Report Date : JUN 1968
Pagination or Media Count : 39
Abstract : As a consequence of thaw cavities (sinkholes) which formed in the drainage ditch at Scanner 6 of the BMEWS facility, Greenland, in 1962, the U.S. Army Engineer District, New York, in the autumn of that year, contracted for rebuilding the damaged ditch. In 1963 the program was expanded to include borings under foundations, installation of thermocouples, levels on footings of buildings and antennas, dye tests to trace subsurface flow, and inspection of the entire surface drainage system. A representative from USA CRREL was at the site from 5 August to 5 September to evaluate the relation of sinkholes to adjacent foundations and to direct installation of thermocouples. Field work accomplished from August through 6 October 1963 comprised 38 diamond drill (NXM) borings refrigerated for extracting frozen cores; 4 dye tests for seepage studies; 23 thermocouple strings installed under 12 structures; initial elevation readings on all foundations in the technical site; aerial photographs in stereo at low altitudes; and inspection of ditches and all heated buildings for settlement or distress. (Author)
Descriptors : (*MILITARY FACILITIES, DRAINAGE), GREENLAND, UNDERGROUND, STRUCTURES, DYES, FLUORESCENCE, PENETRATION, FOUNDATIONS(STRUCTURES), ANTENNA ARRAYS, CRACKS, THERMOCOUPLES, FREEZING, ICE, AERIAL PHOTOGRAPHS, SHALE, TEMPERATURE, DAMAGE, ARCTIC REGIONS
Subject Categories : Structural Engineering and Building Technology
Distribution Statement : APPROVED FOR PUBLIC RELEASE