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ENVIRONMENTAL MONITORING OF WASTE DUMPS OF MINING AGGLOMERATION

Sergey P. Vysotsky ; Dmitriy A. Kozyr

Izvestiâ Tomskogo politehničeskogo universiteta. Inžiniring georesursov, 2021-11, Vol.332 (11), p.37-46 [Periódico revisado por pares]

Tomsk Polytechnic University

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  • Título:
    ENVIRONMENTAL MONITORING OF WASTE DUMPS OF MINING AGGLOMERATION
  • Autor: Sergey P. Vysotsky ; Dmitriy A. Kozyr
  • Assuntos: environmental monitoring ; hotbed of spontaneous combustion ; remote sensing methods ; thermal imager ; thermal state control ; waste dump
  • É parte de: Izvestiâ Tomskogo politehničeskogo universiteta. Inžiniring georesursov, 2021-11, Vol.332 (11), p.37-46
  • Descrição: The relevance of the research. Currently, there are about 600 waste dumps in the territory of Donbass. Their combustion leads to emissions of hydrogen sulfide, sulfur dioxide and other greenhouse gases into the atmosphere. An important environmental challenge is to prevent the formation of endogenous hotbed of spontaneous combustion on the dumps of coal mines and reduce air pollution. Purpose: to improve monitoring of the level of environmental hazard of coal mine dumps located in mining agglomerations for timely localization and prevention of the formation of hotbed of spontaneous combustion on waste dumps. Object: waste dumps of coal mines. Methods: application of the similarity theory and analysis of dimensions between the waste dump and the atmosphere, considering the Huntley add-on; full-scale and laboratory studies of the influence of conditions and distance of thermal imaging shooting, wind speed on the fixed radiant luminosity; studies of toxic gas emissions during combustion of waste dumps. Results. Modeling the main thermophysical characteristics between the hotbed of spontaneous combustion on the waste dump of a coal mine and a thermal imager made it possible to describe them by a criterial equation. Experimental studies have established that with the increase in the distance of thermal imaging, the recorded energy luminosity decreases. The dependence of the energy intensity of light on the angle of thermal imaging shooting in the range of angles 0–60° corresponds to Lambert's law. It was found that the temperature contrast between the thermal imager and the hotbed of spontaneous combustion is inversely proportional to the distance of thermal imaging shooting to the power of 1,81. It was established that the increase in the concentration of one of the most toxic components of emissions from a burning waste dump, hydrogen sulfide, is in power-law dependence on the relative humidity of the atmospheric air. The effectiveness of monitoring the ecological safety of waste dumps with the use of remote-control methods – thermal imagers and remotely piloted aerial vehicles – was substantiated. The use of remote thermal imaging monitoring of the level of environmental hazard of waste dumps using remotely piloted aircraft and reliable determination of emissions into the air during the combustion of waste dumps will reduce the cost of work in comparison with the current contact method by 5 times.
  • Editor: Tomsk Polytechnic University
  • Idioma: Russo
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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