| Annotation |
The article presents an overview of the results of earlier and currently ongoing
studies on the actual problem of the fuel and energy complex – radiation and environmental
safety of coal and its combustion products. The object of the research is
the radiation-ecological quality of brown coals of Transbaikalia. The subject of the
research is the brown coal deposits of Transbaikalia. The purpose of the work is to
assess the radiation-ecological state of brown coal deposits in Transbaikalia. The objective of the research is to obtain reliable information about the content and distribution
of H in coals and their combustion products. Research methods are the following:
field-gamma-testing with the use of modern radiometric devices DKS-96; processing of
laboratory samples using the gamma spectrometer “Progress”; desk work. Data on the
concentrations of radionuclides in coals and their combustion products (ash and slag)
of coal basins in the USA and Russia are presented. Data on the content of uranium
and thorium in coals and ashes of coal from coal basins in Russia are presented. As a
result of the conducted research, the radiation characteristics of brown coals of the Urtuy,
Kharanor, Tataurovsky and Okino-Klyuchesky deposits are analyzed. A preliminary
assessment of the environmental safety of the deposits of the Yuzhno-Argun brown
coal basin is given. The scheme of gamma-testing at the site of the coal seam outlet for
sediment at the Kutinsky deposit is presented. A schematic plan of a Boundary lignite
deposit with a gamma-sampling network on a scale of 1:100,000 is shown. It has been
found that the content of radionuclides (U-238, Ra-226, Th-232, K-40) in the coals of
Transbaikalia and their combustion products is in wide ranges, which indicates a high
level of radiation hazard. The planned work in the future is to build a map of the quality
of deposits according to radiation and hygienic indicators, which can be used in making
technological decisions for mining coal seams. |
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