Justification of technical measures for the remediation of the radioactive waste tailing pond

Purpose. To substantiate technical solutions for tailing pond remediation to reduce the volume of water saturation of radioactive waste. To minimize the infiltration processes of atmospheric water inflow, which lead to a decrease in the stability of the containment dams and enhance the processes of radionuclide migration into the environment. Research methods. A number of field studies were conducted using GIS technologies to study the tailing pond surface topography. Calculations of the volume of earthworks for surface planning were performed according to well-known geodetic approaches by leveling the surface by squares. Methods of mathematical statistics were used to determine the estimated meteorological and hydrological characteristics, modules and volumes of rainfall runoff for the design of the drainage system. Results of the study. The scope of earthworks for the reclamation and redevelopment of the tailing pond surface was determined. The maximum volumes of atmospheric water runoff and the design parameters of the drainage channels were determined. Scientific novelty. The parameters of changes in the elements of the mesorelief of the tailing dump surface based on the hydrological features of the formation of surface runoff under the new design conditions of its operation are proposed. The new patterns of tailing dump surface formation will allow for further organised drainage of surface runoff without creating emergency situations. A variant of improving the impervious surface protection of the tailing dump, consisting of several consecutive layers of coating, is proposed. Practical significance. Implementation of the design solutions will reduce the negative impact of the radioactive waste storage facility on the environment by reducing the rate of radionuclide migration to surface and groundwater. Increasing the stability and reliability of the soil containment dams.