土壤结构参数与含水率和滤水指标关系的实验测定

Q4 Environmental Science
O. Lukyanchuk
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引用次数: 0

摘要

摘要现代气候变化,特别是土壤含水量和强度(降水制度)的变化,对矿物土壤的水物理性质产生了重大影响。土壤的固相状态及其结构颗粒的相互排列可以被认为是影响土壤性质的最重要因素。由于土壤的结构,不仅在垂直方向上,而且在部分水平方向上,都可能影响土壤样品中水分分布的均匀性,这将有助于解决个别区域的局部洪水和矿物土壤的承载力问题。为了分析土壤环境中水物理性质的变化,土壤被认为是一个密度均匀、连续的环境,由一组由内聚力连接的独立结构骨料形成。根据物理模型的实验结果,确定尺寸为4至6mm的结构性土壤大团聚体的存在最适合减缓饱和下层土壤的水的垂直过滤,对于主要类型的土壤,形成尺寸大于6至10mm的结构性土壤大团聚体对于增加垂直过滤是必要的。由于形成的大团聚体的大小,可以预测土壤的水物理参数的变化,然后可以用于评估土壤环境的计算特征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental Determination of the Relationship between Soil Structure Parameters and Indicators of Water Saturation and Filtration
Abstract Modern climatic changes, in particular, changes in the amount and intensity of soil moisture (precipitation regime), have a significant impact on the water-physical properties of mineral soils. The state of soil’s solid phase and the mutual arrangement of its structural particles can be considered as the most significant factor for soil properties. Due to the structure of the soil, it is possible to influence the uniformity of the distribution of water in the soil sample not only in the vertical direction, but, partially, also in the horizontal direction, which will allow to resolve the issue of local flooding of individual areas and the bearing capacity of mineral soils. For the analysis of changes in the water-physical properties of the soil environment, the soil was considered as a homogeneous in density and continuous environment formed by a set of separate structural aggregates connected by cohesive forces. Based on the experimental results of the physical modelling, it was determined that the presence of structural soil macroaggregates with a size of 4 to 6 mm is the most appropriate for slowing down the vertical filtration of water saturating the lower soil layers, and the formation of structural soil macroaggregates of size larger than 6 to 10 mm for the predominant types of soils is necessary to increase the vertical filtration. Due to the size of the formed macroaggregates, it is possible to predict a change in the water-physical parameters of the soil, which then can be used for the assessment of the calculated characteristics of the soil environment.
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来源期刊
Archives of Hydroengineering and Environmental Mechanics
Archives of Hydroengineering and Environmental Mechanics Environmental Science-Water Science and Technology
CiteScore
1.30
自引率
0.00%
发文量
4
期刊介绍: Archives of Hydro-Engineering and Environmental Mechanics cover the broad area of disciplines related to hydro-engineering, including: hydrodynamics and hydraulics of inlands and sea waters, hydrology, hydroelasticity, ground-water hydraulics, water contamination, coastal engineering, geotechnical engineering, geomechanics, structural mechanics, etc. The main objective of Archives of Hydro-Engineering and Environmental Mechanics is to provide an up-to-date reference to the engineers and scientists engaged in the applications of mechanics to the analysis of various phenomena appearing in the natural environment.
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