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Published on 23 February 2019

DUST AND GAS EMISSIONS FROM THE DUMPS SURFACES OF THE LIQUIDATED MINES OF THE MOSCOW COAL BASIN

M. V. Gryazev, N. M. Kachurin, G. V. Stas

Purpose. The work deals with the problem of minimizing the negative impact of the tailings of coal mining and processing on the ecosystems of the environment by optimizing the parameters of the construction and operation of the dumps. Methods. The object is achieved by a method of mathematical modeling aero – gas – dynamics processes based on the system of Reynolds equations in the flow of air masses of waste rock dumps. Results. The simulation parameters of aero – gas – dynamics processes in the flow of waste dumps of atmospheric flows were obtained using O. Reynolds equations describing the flow of the viscous, compressible heat-conductive gas in threedimensional formulation which consists of the basic conservation equations. On the basis of the simulation results the generalized geo – ecological model of technological periods of coal mining by underground method is formulated which is a matrix of the physical models of dust and gas pollutants emission processes in the environmental ecosystems and their mathematically formalized description. It is shown that the intensity of dusting rock dumps depends on a number of factors, the main of which are the dispersed composition, dust humidity, as well as the direction and speed of the wind. The analysis of the results of the computational experiment determined that during the transfer of the gas pollutant its concentration under wind action in the simulated space changes slightly. It was found that the intensity of dust deposition in the area of mines is determined by the value of the dust soaring rate and the value of the sedimentation coefficient. Summary. The territory of the studied mines is polluted mainly with lead. Calculation aero – gas – dynamics processes parameters of waste dumps flow on the basis of Reynolds equations in three-dimensional formulation gives correct results.

CityTula
CountryRussia
UDC551
Issue2018, № 4 (Т. 10)
Key wordsproduction and processing tails, coal, environment, dump, mathematical modeling, air masses.
Number of views (327)

Categories: Articles, Geo-ecological,-Recreational-and-Biomedical-Issues-of-SDMT

Tags: математическое моделирование, окружающая среда, хвосты добычи и переработки, уголь, отвал, воздушные массы

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ISSN 1998-4502 (Print)                                                            ISSN 2499-975Х (Online)