Forecasting Water Saturation of Fill Grounds in Urban Infrastructure Conditions by Mathematical Modeling Based on the Main Hydrophysical Characteristic

Человечкова, А В; Komissarova, I V; Eremin, Dmitry

doi:10.14505//jemt.v9.3(27).08

Cited by 6 publications

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“…The part of the soil that does not belong to macroaggregates (<0.25 mm), as well as the lumpy fraction, characterizes the structural and aggregate composition. For optimal structure formation, it is required that a small part of microaggregates not glued into large aggregates be present in the soil [14,15]. In the arable layer of chernozem, the content of structural separations with dimensions less than 0.25 mm is 4.91.4%, but with an average degree of variability (CV=28%).…”

Section: Resultsmentioning

confidence: 99%

The nature of organic carbon and total nitrogen distribution in the fractions of leached chernozem aggregates and gray soil in Western Siberia

Eremin

Demin

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The features of the accumulation and distribution of organic carbon and nitrogen in the aggregates of the arable layer of leached chernozem (Luvic Voronic Chernozems) and gray forest soil (Luvic Retic Greyzemic Phaeozems) were evaluated. After dry sieving in structural separates of dimensional fractions >10, 10-5, 5-2, 2-1, 1-0.25, and <0.25 mm, the content of organic carbon and total nitrogen was determined in the laboratory. It was found that chernozem and gray forest soil significantly differed from each other in organic carbon in all fractions of structural separates. Lumpy aggregates (>10 mm) and fine earth (<0.25 mm) were characterized by an average spatial variability (CV up to 21%) of organic carbon and total nitrogen content. In chernozem arable layer, the maximum content of organic carbon and total nitrogen was in size fractions from 5 to 0.25 mm, whereas in gray forest soil – from 10 to 2 mm. Maximum value of C:N in gray forest soil was 16.0 units in aggregates with dimensions less than 0.25 mm, and in chernozem – in the lumpy fraction (> 10 mm), where the ratio was 15.1 units it was revealed that the content of organic carbon in structural units depends on the soil type by 21%, and on the dimensional fraction by 37%. The total nitrogen content is determined by 20% by the soil type and 36% by the size of structural aggregates.

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Section: Resultsmentioning

confidence: 99%

The nature of organic carbon and total nitrogen distribution in the fractions of leached chernozem aggregates and gray soil in Western Siberia

Eremin

Demin

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Single-type curves were obtained when comparing the result gained with the application of a software package with the laboratory studies, [2]. Therefore, the basic hydrophysical characteristics of light gray forest bleached soils were built using the program, [11] (Fig.…”

Section: Resultsmentioning

confidence: 99%

Mathematical Methods and Computer Modeling to Predict the Formation of the Fill Grounds

Человечкова¹,

Polyakova²,

Zmyzgova³

2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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A method for predicting fill grounds used in landscaping of urban infrastructures is proposed. One of the measures to solve this problem is land remediation. New techniques of reducing economic costs are required. A program of a mathematical model has been developed with this objective. The mentioned program bases on the main hydrophysical characteristics of soils. The algorithm for calculating a computer model uses the properties of chernozem and light gray forest bleached soil. The calculation model is based on the Voronin regression equations. The model presented in the method is characterized by visualization, clarity and ease of use. The analysis of the main hydrophysical characteristics obtained due to this method enables to make a conclusion. Water retention curves characterize the pore space which water saturation depends on. This can be used in the design of fill grounds with the desired characteristics.

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“…Arable chernozem of Western Siberia is characterized by good water permeability (1.2-1.7 mm/min) of the humus layer and satisfactory in the illuvial horizon (1.2-0.5 mm/min [1,2].…”

Section: Introductionmentioning

confidence: 99%

Influence of basic soil tillage on the physical properties of leached chernozem of Western Siberia

Рзаева

Eremin

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article presents the results of researches on the change in the physical properties of leached chernozem during the cultivation of spring wheat according to the basic tillage options (moldboard, non-moldboard, differentiated, No-till) for three crop rotations (annual grass-spring wheat-spring wheat) and fallows. In the course of the field study of the water permeability of the subsurface layers of leached chernozem, it was found that moldboard and non-moldboard basic tillage have the maximum negative impact. They reduce the infiltration rate from a depth of 30 cm to 1.7, and from a depth of 50 cm - 2.2 mm/min. Also, the abovementioned systems of basic tillage reduce filtration to minimum values of 1.0-1.2 mm/min. The minimum negative effect was noted at differentiated tillage, in which the water permeability of the subsurface layers approaches the values of long-term fallow. The rate of absorption and movement of water in unsaturated soil changes relatively quickly, affecting the reserves of productive moisture, aeration of the root zone, and through them affects the productivity of the arable land. The productivity of the crop rotation with a seed fallow (annual grass-spring wheat spring – wheat spring) is reliably higher than the control according to the differentiated treatment; and it is 40% less according to the No-till basic tillage.

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Forecasting Water Saturation of Fill Grounds in Urban Infrastructure Conditions by Mathematical Modeling Based on the Main Hydrophysical Characteristic

Cited by 6 publications

References 0 publications

The nature of organic carbon and total nitrogen distribution in the fractions of leached chernozem aggregates and gray soil in Western Siberia

The nature of organic carbon and total nitrogen distribution in the fractions of leached chernozem aggregates and gray soil in Western Siberia

Mathematical Methods and Computer Modeling to Predict the Formation of the Fill Grounds

Influence of basic soil tillage on the physical properties of leached chernozem of Western Siberia

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