基于未冻水含量曲线的冻土渗透系数模型研究

张致龙; 关陈晨

doi:10.13568/j.cnki.651094.651316.2021.08.07.0001

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基于未冻水含量曲线的冻土渗透系数模型研究

工程技术 | 更新时间：2026-01-21

- 基于未冻水含量曲线的冻土渗透系数模型研究
- 基于未冻水含量曲线的冻土渗透系数模型研究
- 新疆大学学报（自然科学版中英文） 2022年39卷第4期页码：484-491
- 作者机构：
  
  新疆大学建筑工程学院
- 作者简介：
- 基金信息：
  
  新疆维吾尔自治区自然科学基金（2020D01C025）;新疆大学博士科研启动基金（BS180274）
- DOI：10.13568/j.cnki.651094.651316.2021.08.07.0001
  中图分类号： TU445
- 纸质出版：2022
- 稿件说明：
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[1]张致龙,关陈晨.基于未冻水含量曲线的冻土渗透系数模型研究[J].新疆大学学报(自然科学版)(中英文),2022,39(04):484-491.
[1]张致龙,关陈晨.基于未冻水含量曲线的冻土渗透系数模型研究[J].新疆大学学报(自然科学版)(中英文),2022,39(04):484-491. DOI： 10.13568/j.cnki.651094.651316.2021.08.07.0001.

DOI：10.13568/j.cnki.651094.651316.2021.08.07.0001.

摘要

为了更准确、更容易计算冻土中的渗透系数，采用未冻水含量曲线，并考虑孔隙壁对水分迁移的影响，建立了一个基于Hagen-Poiseuille方程的冻土渗透系数模型来描述冻土中的水流情况，得出冻土渗透系数与温度之间的函数关系．在相同条件下，用该模型计算的冻结粉土和粉质黏土的渗透系数与试验结果吻合较好．此外，在0～-5℃的范围内，预测了不同初始含水量饱和黏土、粉土的渗透系数．该模型仅需要一个准确测量的未冻水含量曲线和对应的融土渗透系数，这使冻土的冻胀和融沉预测更加容易和准确．

Abstract

To predict moisture migration in frozen soil more accurately and easily

a new hydraulic conductivity model based on the Hagen-Poiseuille equation has been developed in this research to describe water flow in frozen soil using the soil-freezing characteristic curve and taking into account the effects of water slip and effective viscosity of water at pore walls. The hydraulic conductivity of frozen silt clay and silt calculated by this model matches very well with the results from experiments at the same condition. In addition

the model can predict the hydraulic conductivity of saturated clay and silt with different initial moisture contents in the temperature range of 0 ℃ to-5 ℃. This model requires only a frozen-soil characteristic curve and the hydraulic conductivity of the unfrozen soil at the same moisture content

it can improve the accuracy of frost heave and thaw settlement predictions.

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references

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