DETERMINING THE EFFECT OF SOIL WATER SATURATION LEVELS ON THE EVAPORATION PROCESS
Keywords:
Moisture evaporation, degree of saturation, model materials, evaporation rate, dehydration, sand, loam, unsteady moisture flowAbstract
This article presents the results of experimental studies on the influence of the degree of water saturation and mineral composition on the process of moisture evaporation from soils. Based on an analysis of model materials (sand, loam, and mixtures thereof) under isothermal conditions, patterns of changes in evaporation intensity over time have been established. The author identifies three stages of pore space dehydration and demonstrates that the evaporation rate is directly dependent on the initial moisture content and the soil’s particle size distribution. Mathematical interpretation of the data was performed using fourth- and fifth-degree polynomials, confirming a systematic decrease in evaporation intensity from sand to loam as the binding energy of water with the mineral surface increases.
References
1. Гамаюнов Н.И., Афанасьев А.Е., Чураев Н.В. Механизм переноса влаги при испарении ее из капиллярно-пористых тел. // Исследование процессов обмена энергией и веществом в системе почва-растение-воздух. –Л.: Изд-во «Наука», 1972. –С. 45-50.
2. Королев В.А., Ахромеева Т.П., Федяева Е.А. Закономерности термовлагопереноса в ненасыщенных дисперсных грунтах. // Инженерная геология. -1990. -№3. –С.16-29.
3. Нерпин С.В., Чудновский А.Ф. Физика почвы. –М.: Изд-во «Наука», 1967. -584 с.
4. Рувинский В.И. Оптимальные конструкции земляного плотно. –М.:
Транспорт, 1992. -240 с.
