Environmental Safety in the Zone of Influence of Uranium Production

Abstract

It is shown that the improvement of the environmental situation at the sites of mountain sites is achieved through the implementation of planning activities that include: the organization of storm sewers to collect surface and filtered through the dumps of water, supply them to the mine waters treatment plant; isolation of the surface of the dumps by the soil and vegetation layer, which prevents dust emission and migration of radionuclides from the effects of precipitation; recultivation of contaminated radionuclides in the process of production activities of local areas with a total area of 20 thousand m2. Rehabilitation measures to minimize negative effects on the environment and human health from the effects of radiation and other polluting factors have been scientifically substantiated, developed and implemented.

Development of building materials based on a high content of fly ash and polycondensation products from Chinese heat and power plants

“…Lyashenko et al [31] state that the plastification of the concrete mix can adversely affect the strength of the steamed concrete and lengthen the steam curing period of precast concrete and ash-concrete products. As noted earlier, although the combined use of ash (30%) and acetoneformaldehyde resins (0.15%) slows down the structure formation during the induction period, it does not reduce the strength of the cement stone in the initial curing period.…”

Development of technologies and technical means for storage of waste processing of ore raw materials in the tailings dams

“…On the recommendation of Engineering Dobersek GmbH (Germany), when preparing the tailings for curing, they are dehydrated to obtain pulp with a content of up to 80 % of the solid component and sent to the mixer for mixing with cement. The technological scheme for the preparation of enrichment fluids for immobilization con tains a dewatering case, a thickener, a mixer, concrete pumps, batchers, and a concrete pipeline, tailings dam maps, branches and a conveyor [24,25]. The tailings dehydra tion and backfill preparation complex includes: a dewater ing case, three thickeners with a diameter of 50 m with a pump station, a mixing unit, a cement silo with a total capacity of 6 thousand tons.…”

“…In this case, dust will settle in these forest plantations and will not flow to other territories, including settle ments. In addition, it is necessary to develop scientific and methodological foundations, technologies and technical means to increase the fertility and efficiency of soil use in industrial zones of MMP, as well as to assess their impact on the environment and humans [20,24].…”

Increasing environmental safety by reducing technogenic load in mining regions

“…Таким образом, установлена возможность использования твердеющих смесей с применением в качестве вяжущего цемента, доменного гранулированного шлака и золы, а в качестве наполнителя - хвостов ГМЗ для их иммобилизации при заполнении карт поверхностных хвостохранилищ, определена прочность, рецептура и последовательность укладки полученной твердеющей смеси в хранилище (табл. 5) [24].…”