Research on the Hydraulic Conductivity Properties of the Soil Subgrade of the Central Yakutia

Abstract

This work presents the results of research on the effects of compaction, moisture content and temperature on the coefficient of hydraulic conductivity of frozen and not frozen soils. Moisture permeability - the property of non-saturated soil to pass through its pores a non-continuous stream of water under the influence of moisture gradients, which provide gradients of absorption force. These forces arise due to the interaction of water with the surface of mineral particles and air. This is more a diffusion process than a filtration process. Clay soils of the earth bed within the depth of the seasonal thawing layer were selected for conducting studies of moisture-conducting properties of soils. Three series of tests were conducted. During all three series of tests graphs of dependence of coefficient of moisture conductivity (KW) are constructed and corresponding conclusions are drawn. When establishing experimental regularities, statistical data of experiments performed with 5-fold repetition were analyzed. Conclusions are reached concerning the migration of moisture in frozen and not frozen soils.