Effect of the interlayer on soil temperature and the transformation between phreatic water and soil water under laboratory freeze-thaw action
نویسندگان
چکیده
To reveal the effect of interlayer on temperature freeze-thaw soil and transformation between phreatic water in shallow groundwater areas, a test was conducted with table depth 0.5 m under laboratory action. The sand columns constant freezing at −20°C lasted for 20 days, thawing process 15 days were monitored. interlayers particle size 0.1–0.5 mm (d 50 = 0.3 mm) thickness 5 cm set 5, 15, 20, 25 away from surface these marked as D , which compared homogeneous column (C h ) 0.5–1.5 1.0 mm). results showed that fine had thermal insulation profile it effectively inhibited upward migration to during process. A near-surface better insulation, stronger inhibition amount (UMA) larger cumulative downward movement (DMA). UMA 61%–84% C stage, DMA 29%–57% stage. inefficient loss increased exponentially interlayer, an farther consumed more stored unsaturated zone, its reached almost zero earlier. These research significant scientific evaluation resources areas.
منابع مشابه
Freeze – Thaw and Water Tension Effects on Soil Detachment
1327 Soil Sci. Soc. Am. J. 74:1327–1338 Published online 21 May 2010 doi:10.2136/sssaj2009.0360 Mention of trade names does not imply endorsement by the USDA. Received 21 Sept. 2009. *Corresponding author ([email protected]). © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or b...
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2023
ISSN: ['2296-6463']
DOI: https://doi.org/10.3389/feart.2023.1200677