Effects of Sodium Salt Content on Soil Mechanical Properties of Silty Sandon Engineering Soil Slope in Coastal Reclamation Area

ZHENG Yipeng; SHE Dongli; WANG Hongde

doi:10.13870/j.cnki.stbcxb.2019.02.015

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Effects of Sodium Salt Content on Soil Mechanical Properties of Silty Sandon Engineering Soil Slope in Coastal Reclamation Area

更新时间：2025-03-12

- Effects of Sodium Salt Content on Soil Mechanical Properties of Silty Sandon Engineering Soil Slope in Coastal Reclamation Area
- Vol. 33, Issue 2, Pages: 93-97(2019)
- 作者机构：
  
  1. 河海大学农业工程学院,南京,210098
  2. 中国科学院教育部水土保持与生态环境研究中心黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2019.02.015
  CLC：
- Published：2019
- 稿件说明：
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ZHENG Yipeng, SHE Dongli, WANG Hongde. Effects of Sodium Salt Content on Soil Mechanical Properties of Silty Sandon Engineering Soil Slope in Coastal Reclamation Area[J]. 2019, 33(2): 93-97.
DOI：

ZHENG Yipeng, SHE Dongli, WANG Hongde. Effects of Sodium Salt Content on Soil Mechanical Properties of Silty Sandon Engineering Soil Slope in Coastal Reclamation Area[J]. 2019, 33(2): 93-97. DOI： 10.13870/j.cnki.stbcxb.2019.02.015.

摘要

为探索钠盐含量变化对海涂粉砂土工程边坡稳定性的影响，以界限含水率试验和抗剪强度测定试验为基础，分析Na+含量对粉砂土界限含水率和抗剪强度等土力学参数的响应规律，并结合无限边坡安全系数计算，明确不同饱和度条件下土壤Na+含量变化对边坡稳定性的影响。结果表明：随着Na+含量增加，土样塑限呈缓慢增大趋势，而液限呈减小的变化规律。平均黏聚力和平均内摩擦角均随Na+含量增加而减小。对相同质地土壤，当饱和度不变时，边坡安全系数FS随Na+含量增加而减小；当Na+含量不变时，土壤饱和度越大，安全系数FS越小，当饱和度为1时，FS达到最小值。土壤饱和度越高，FS随Na+含量增加而减小的幅度越大。

Abstract

In order to explore the effects of sodium salt content on the stability of silty engineering slope in marine saline-alkali land

limit moisture content and shear strength experiments were carried out to investigate the influence of Na+ content on the soil mechanics parameters including limiting moisture content

shear strength and other parameters. Moreover

combined with the calculation of the infinite slope safety factor

the influence of soil Na+ content on slope stability under different saturation conditions was defined. The results showed that with the increasing of Na+ content

the plastic limit of soil sample increased slowly

while the liquid limit decreased. In addition

average cohesion and average internal friction angle both decreased with the increasing of Na+ content. For the same soil texture

the slope safety factor (FS) decreased with the increasing of Na+ content when the soil saturation was constant. When the Na+ content was constant

the greater the soil saturation

the less the FS was

and the FS reached the minimum value when soil was fully saturated. The higher the soil saturation

the greater the decrease amplitude of FS with the increasing of Na+ content.

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