在湿过程下估计双模土水特性曲线
Nura Bello1, Alfrendo Satyanaga1, Nurly Gofar2
1Department of Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, Kazakhstan.
PloS one
|June 25, 2025
概括
一个新的数学模型估计了土壤湿期间的土壤水特性曲线 (SWCC),这对于防止双模土壤中的地质技术结构故障至关重要. 这种湿度曲线模型为工程应用提供了实用的见解.
科学领域:
- 地质技术工程 地质技术工程
- 土壤科学 土壤科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 土壤水特性曲线 (SWCC) 表现出hysteresis,湿化和干燥曲线代表不同的土壤湿度条件.
- 地质技术结构故障,特别是在双模土壤中,主要发生在湿过程中,突出显示了湿SWCC的关键重要性.
- 在分析中,由于实验测量的高成本,时间和难度,湿SWCC经常被忽视,导致潜在的不准确评估.
研究的目的:
- 开发一种新的数学方程,用于在湿条件下估计双模土壤水特性曲线 (SWCC).
- 为实用和数值分析应用创建具有物理意义的参数模型,与湿SWCC变量相关.
主要方法:
- 制定了一个新的数学方程,以预测湿过程中的双模式SWCC.
- 拟议的模型使用来自六种不同土壤类型的数据进行了验证.
- 使用确定系数 (R2) 和根平均平方误差 (RMSE) 的统计评估被用于评估模型性能.
主要成果:
- 开发的模型准确地估计了在潮湿条件下的双模式SWCC.
- 使用六种土壤类型的验证显示了强大的模型性能,平均R2为0.9945,平均RMSE为0.0263.
- 发现该模型的参数具有与实际地质工程相关的显著物理解释.
结论:
- 开发的数学模型提供了一种可靠的方法来估计双模土壤中的湿SWCC.
- 该模型解决了地质工程中的一个关键差距,提供了一个工具,可以更好地预测湿期间的土壤行为,并减轻故障风险.
- 该模型的准确性和物理上有意义的参数使其对工程应用和涉及湿感土壤行为的数值模拟具有高度相关性.
相关概念视频
01:10Moisture Content and Bulking of Aggregate
216
The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
216
01:21Precipitation Titration Curve: Analysis
1.2K
The precipitation titration curve demonstrates the change in concentration of one reactant with the volume of titrant added. During the titration of chloride ions with silver nitrate, the precipitation titration curve is divided into three regions: before, at, and after the equivalence point. Before the equivalence point, low redissolution of the sparingly soluble silver chloride precipitate gives a low silver ion concentration. However, in the second region, representing the equivalence point,...
1.2K
01:20Porosity and Absorption of Aggregate
420
Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
420
01:27Design Example: Design of an Irrigation Channel
235
Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
235