[1]DONG Xiaohua,YAO Zhuoxi,PENG Tao,et al.Effects of Temperature on Comparative Study of the Water Characteristic Curve of Soil and Quartz Sand[J].Research of Soil and Water Conservation,2016,23(06):64-68.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 06
Page number:
64-68
Column:
Public date:
2016-12-28
- Title:
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Effects of Temperature on Comparative Study of the Water Characteristic Curve of Soil and Quartz Sand
- Author(s):
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DONG Xiaohua1,2, YAO Zhuoxi1, PENG Tao1,2, LIU Ji1,2, LI Yinghai1,2, LIU Xiaojun1, GUO Liangfeng1
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1. College of Hydraulic and Environment, China Three Gorges University, Yichang, Hubei 443000, China;
2. Hubei Collaborative Innovation Center for Water Resources Security, Wuhan 430072, China
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- Keywords:
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moisture characteristic curve; Van Genuchten method; centrifuge method; temperature
- CLC:
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S152.7
- DOI:
-
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- Abstract:
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In order to study the change of temperature on the influence mechanism of difference of water-holding capability of soil and quartz sand, based on the centrifuge experiments we may combine theoretical analysis to check measured data of quartz and soil water characteristic curves, the water volume and fitting parameters of Van Genuchten empirical model at different temperatures. The results showed that temperature change had the significant effect on the position of the soil-water characteristic curve and no effect on the trend of curve; however, temperature changes had no obvious impact on quartz sand sample; the effect of temperature on water holding ability of soil would rather mostly be determined by soil humidity characteristics and the nature of soil itself than the nature of soil itself directly; at the same time, we can combine the concept of specific water volume and VG model parameter to assess accurately water-holding capacity and available extent of water of two test samples under temperature variation.