| Popis: |
Background One of the sources of environmental pollution is surface wastewater, as well as other liquid-phase pollution (for example, oil products) from the railway right-of-way. Since these pollutants entering the environment from railway transport facilities are discharged in an unorganized manner, the regulation on pollutants is not applied to them. Therefore, it is necessary to pay special attention to the methods of collecting, removing and cleaning these contaminants, for which it is necessary to clearly understand the ways of their possible migration both in the horizontal direction (runoff, overflow, etc.) and in the vertical direction (seepage into the ground). Aims and Objectives The article is devoted to the study of the dynamics of infiltration of a liquid layer into a porous soil. Results Simple formulas were obtained for the time dependence of the thickness of the liquid layer on the soil and for the time of complete absorption of the liquid into the soil, depending on the filtration coefficient and the porosity of the soil. It is found that the total absorption time is directly proportional to the thickness of the initial liquid layer on the ground. It is found that practically at any soil porosity (from 40 % to 100 %), the infiltration process is practically independent of the specific porosity value and proceeds practically in the same way as in the limiting case of 100% porosity. Calculations of the absorption time for typical soils have been carried out. |
