Analysis of factors affecting permeability of calcareous sand
in salt solution environment

ZHENG Si-wei; HU Ming-jian; HUO Yu-long; LI Yu

doi:10.16285/j.rsm.2023.1168

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Analysis of factors affecting permeability of calcareous sand in salt solution environment

更新时间：2026-06-25

- Analysis of factors affecting permeability of calcareous sand in salt solution environment
- Vol. 44, Issue 12, Pages: 3522-3530(2023)
- 作者机构：
  
  1. 安徽理工大学土木建筑学院,安徽,淮南,232001
  2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北,武汉,430071
  3. 湖北省地震局,湖北,武汉,430071
  4. 桂林理工大学土木与建筑工程学院,广西,桂林,541004
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2023.1168
  CLC： TU441
- Online First：21 December 2023，
  
  Published：2023
- 稿件说明：
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ZHENG Si-wei, HU Ming-jian, HUO Yu-long, et al. Analysis of factors affecting permeability of calcareous sand in salt solution environment[J]. 2023, 44(12): 3522-3530.
DOI：

ZHENG Si-wei, HU Ming-jian, HUO Yu-long, et al. Analysis of factors affecting permeability of calcareous sand in salt solution environment[J]. 2023, 44(12): 3522-3530. DOI： 10.16285/j.rsm.2023.1168.

摘要

渗透性是指溶液在砂土体孔隙中渗透流动的性能，渗透系数作为衡量土体渗透性的重要指标，其大小受多种因素综合影响，目前有关砂土体渗透特性的研究基本在淡水环境下开展，而钙质砂属于海相沉积砂，处于具有一定盐浓度的海水环境中。为探究盐溶液环境下，孔隙比、颗粒粒径及溶液盐含量对钙质砂渗透性的影响，基于KAST土壤饱和水力导度测量仪开展常水头和变水头渗透试验，并通过Zeta电位和接触角试验进行微观探讨。研究结果表明：钙质砂均值粒径对渗透系数影响最大，均值粒径变化将导致渗透系数产生数量级上的差异；渗透系数与渗透液含盐量呈负相关关系，与孔隙率和均值粒径呈正相关关系。通过这些影响因素分析，建立了考虑渗透液含盐量因素在内的渗透系数计算模型，该模型可为中国南海人工吹填岛礁渗透性评估、地下淡水演化分析提供参考。

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