Engineering Applications in Permafrost Areas 577 Design and performance of the Inuvik, N.W.T., airstrip
The Inuvik airfield was constructed between 1956 and 1958 on a site underlain by frozen fine-grained soils containing considerable quantities of ice. Its design and performance were therefore of considerable concern. The airfield consists of an embankment of rock fill constructed on the undis-turbed...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.565.8865 http://pubs.aina.ucalgary.ca/cpc/CPC4-577.pdf |
| Summary: | The Inuvik airfield was constructed between 1956 and 1958 on a site underlain by frozen fine-grained soils containing considerable quantities of ice. Its design and performance were therefore of considerable concern. The airfield consists of an embankment of rock fill constructed on the undis-turbed ground surface to a thickness sufficient to prevent, or minimize, thawing of the frozen subgrade soils: from 2.5 to 4.2 m, and averaging about 3 m. The airfield was paved with asphaltic concrete in 1969. Ground temperatures were measured at several locations in the subgrade and the embankment from 1958 to 1974. All temperature observations showed that the permafrost table moved up at least 0.6 m into the fill after construction was completed in 1958 and remained at about the same level in subse-quent years, even after paving. The airstrip has performed extremely well to date and has required little maintenance work. La piste d'atterrissage d'lnuvik a CtC construite entre 1956 et 1958 sur un lit de sol a grain fin gelC contenant des quantitks considerables de glace. Sa conception et son comportement ont donc CtC un sujet de prkoccupation considtrable. La piste d'atterrissage consiste en un remblai de roches construit sur une surface de sol intact a une profondeur suffisante pour empkher, ou minimiser, le degel du sous-sol gel & de 2.5 a 4,2 m pour une profondeur moyenne d'environ 3 m. La piste d'atterrissage a CtC couverte d'un bCton asphaltique en 1969. Les temperatures du sol ont CtC mesurks a divers endroits sous le niveau du sol et dans le remblai de 1958 a 1974. Toutes les observations de la temperature ont montre que la surface du pergClisol a monte d'au moins 0,6 m dans le remblai aprts que la construction fut termink en 1958 et est restte a peu prts au m@me niveau au cours des annks suivantes, m&me aprks le pavage. La piste d'atterrissage a eu un excellent comportement jusqu'h maintenant et n'a pas ntcessitk beaucoup de travaux d'entretien. Proc. 4th Can. Permafrost Conf. (1982) |
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