Volume 39 Issue 2
Apr.  2025
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Article Navigation >  GEOTECHNICAL ENGINEERING TECHNIQUE  > 2025  >  39(2): 167-176
He Haichao, Nan Yalin, Yao Miao, Xue Junhao, Wang Zhongyi, Guo Jianhui, Li Jing, Guo Dongxin, Luo Dong. Modified model of moisture content distribution of loess profile for loess paleosoil interlayer[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(2): 167-176. doi: 10.20265/j.cnki.issn.1007-2993.2024-0575
Citation: He Haichao, Nan Yalin, Yao Miao, Xue Junhao, Wang Zhongyi, Guo Jianhui, Li Jing, Guo Dongxin, Luo Dong. Modified model of moisture content distribution of loess profile for loess paleosoil interlayer[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(2): 167-176. doi: 10.20265/j.cnki.issn.1007-2993.2024-0575
shu

Modified model of moisture content distribution of loess profile for loess paleosoil interlayer

doi: 10.20265/j.cnki.issn.1007-2993.2024-0575
  • 1.

    Telecom Comprehensive Survey and Design Institute Co., Ltd., Xi’an, 710054, Shaanxi, China

  • 2.

    Shaanxi Engineering Research Center of Soil Body, Xi’an, 710049, Shaanxi, China

  • 3.

    School of Habitat Environment and Architectural Engineering, Xi’an Jiaotong University, Shaanxi Xi’an, 710049

  • 4.

    Shaanxi Building Science Research Institute Co., Ltd, Xi’an, 710003, Shaanxi, China

  • Received Date: 2024-12-07
  • Accepted Date: 2025-02-14
  • Rev Recd Date: 2025-01-12
    • Available Online: 2025-04-07
  • Publish Date: 2025-04-08
    Abstract
  • To accurately measure the saturation levels of individual soil layers in loess-paleosol interbedded strata and revise the moisture content distribution in loess profiles, the pressure plate method were employed to obtain soil-water characteristic curves for both loess and paleosol in Tongchuan area. Unsaturated seepage numerical simulations were conducted using Midas GTS NX software. Based on simulation data, a moisture content correction model was established and validated against field immersion test measurements. The results of this model were then compared with the measurements from the in-situ immersion test. The study shows that in the same geological age, the influence of different ancient soil on water infiltration is relatively consistent, but in different geological periods, the difference of this influence becomes obvious. The calculated value and measured value of the constructed moisture content correction model are basically consistent with the upward and downward trend in the key nodes such as the junction of loess ancient soil, which can prove the accuracy and scientificity of the moisture content model calculation of multi-layer ancient soil. This study provides a reference for the moisture content correction in the loess areas with the ancient soil layer, which can improve the accuracy of the collapsibility evaluation in the loess-ancient soil reciprocal layer.

     

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