The Borehole jack : Is it a useful arctic tool?

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ConferenceProc. 5th Int. Offshore Mechanics and Arctic Engineering Symp.: 13 April 1986, Tokyo, Japan
Pages32835; # of pages: 294
Subjectjacks; stresses; ice; ice - working temperatures; viscoelasticity; high temperature embrittlement; mechanical properties of ice; electrohydraulic pump; pressure; diametral displacement as a function of time; borehole jack test procedures - modifications
AbstractAs the working temperatures in ice are very close to its melting point, it behaves visco-elastically and experiences what is commonly known as high temperature embrittlement. Its mechanical properties are rate and temperature sensitive and analysis must include load and displacement history. Borehole jack tests can be improved by the use of an electrohydraulic pump in conjunction with simultaneous recording of pressure and diametral displacement as a function of time. These small but significant modifications in the test procedures permit analysis of the response of a borehole jack test system under operational winter conditions in the High Arctic in first-year and multi-year sea ice.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number26638
NPARC number20338115
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Record identifierfb694972-b256-45b3-b412-c7098d113afe
Record created2012-07-19
Record modified2016-05-09
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