An Advanced Technology for Stabilizing Dust Producing Surfaces of Built-Up Technogenic Massifs During Their Operation

Strizhenok, A. V.; Иванов, А. В.

doi:10.1007/s10749-016-0690-y

Cited by 4 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this regard, safety improvement during blasting operations in gaseous and dusty mines is of utmost importance [2]. Dust-methane explosion safety upgrades are possible only by a comprehensive approach, including risk management [3][4][5], development of tools and methods of mine explosion protection, methane emission control [6], coal deposits underground mining technological processes monitoring [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

2022

View full text Add to dashboard Cite

A review of the existing optoelectron monitoring devices revealed that the design of optoelectron detectors of the mine atmosphere does not sufficiently take into account the factor of external optical interference. This includes any extraneous source of thermal emission: a source of artificial lighting or enterprises. As a consequence, the optoelectron detectors -based safety systems currently installed at mining sites are not able to ensure properly the detection of the ignition source in the presence of optical interference. Thus, it is necessary to determine the working spectral wavelength ranges from methane and coal dust explosions. The article presents the results of experimental research devoted to the methane-air mixture and coal dust explosion spectral analysis by means of the photoelectric method. The ignition of a methane-air mixture of stoichiometric concentration (9.5%) and coal dust of size characterized by the dispersion of 63–94 microns and concentration of 200 g/m3 was carried out in a 20 L spherical chamber with an initial temperature in the setup of 18–22 °C at atmospheric pressure. Then, photometry of the explosion light flux was conducted on a photoelectric unit. Operating spectral wavelength ranges from methane and coal dust explosions were determined. For the methane-air mixture, it is advisable to use the spectral regions at the maximum emission of 390 and 900 nm. The spectrum section at the maximum emission of 620 nm was sufficient for dust-air mixture. It enabled us to select the wavelength ranges for automatic explosion suppression systems’ launching references. This will exclude false triggering of the explosion suppression system from other radiation sources. The research results will help to improve the decision-making credibility of the device in its direct design. The results will be used in further research to design noise-resistant optical flame detection sensors with a high response rate.

show abstract

Section: Introductionmentioning

confidence: 99%

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

2022

View full text Add to dashboard Cite

show abstract

“…In particular, the high relative humidity of air, characteristic of Saint Petersburg during all climatic periods of the year, contributes, as is known, to the coagulation of solid particles, which, in turn, causes their faster settling and, consequently, a decrease in the concentration in the urban air environment [Sergina et al 2019]. However, a large number of vehicles, active development of territories [Strizhenok et al 2016], a reduction in the number of green spaces and a large number of industrial enterprises affect the state of atmospheric air, necessitating constant monitoring of the air quality in the city.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Air Monitoring System in Megacity on the Example of St. Petersburg

Dzhevaga¹,

Borisova²

2021

J. Ecol. Eng.

View full text Add to dashboard Cite

The paper considers the current problem of improving the quality of atmospheric monitoring. The paper aimed at conducting a monitoring section of the existing situation in the studied territories in St. Petersburg. The following study methods were described: gravimetric, electrochemical, and chromatographic. The analysis of samples was carried out on the following laboratory facilities of the mobile environmental laboratory: PU-3E aspirator, ECO-LAB portable gas analyser, DUSTTRAK 8533 dust analyser, portable gas chromatograph FGKh-1, professional weather station. The study consisted of two parts and was carried out in two districts of the city: Novosmolenskaya Embankment of the Smolenka River (Vasileostrovsky District) and the banks of the Volkovka River (Frunzensky District). As a result of the study, the concentrations of nitrogen dioxide, carbon oxide, suspended solids and volatile organic compounds in the air of the studied districts were measured. The obtained values were compared with the maximal single limiting concentration (LMC m.s. ) and assumptions were made about the possible sources of pollution. In the territory of Novosmolenskaya Embankment, the concentration of nitrogen dioxide varied from 0.211 mg/m 3 to 0.472 mg/m 3 , which means the exceedance of LMC m.s. The maximum permissible concentration of the volatile organic compounds (VOC) content in air was exceeded by several orders of magnitude. No exceedance of LMC m.s. was detected for the content of carbon oxide and suspended solids in the air. The empirical data was used to build the air pollution content maps and to calculate the atmospheric pollution index in the studied territory.

show abstract

“…A large quantity of inorganic dust of this facility reaches the environment from the deposit of treatment waste. In the process of stocking up treatment waste, dry beaches form on a tailings dump which occupy from 25 to 30% of the area and actively release dust into the atmosphere during the summer season [Strizhenok, 2016]. The dust blown away by the wind of the surface of the tailings dump disperses in the atmosphere and subsequently falls on a soil surface by way of gravitational settling or fallout, which leads to the formation of secondary pollution (in particular, by the heavy metals contained in dust) in a soil covering .…”

Section: Introductionmentioning

confidence: 99%

Development of an Engineer Operation Aimed at the Reduction of Atmospheric Dust Pollution in the Decommissioning of Iron-Ore Treatment Waste

2019

View full text Add to dashboard Cite

This work covers the pollution of the atmosphere during the work of the Mikhailovsky Mining and Refining Facility which is located within 100 km from the city of Kursk, in the city of Zheleznogorsk. Over the past few years in the whole world, the anthropogenic activity, connected mainly with the locations of mineral production and those of mineral treatment and processing, has become increasingly dangerous for the natural environment. Resource development in open pits causes the formation of inorganic dust. The dust is released into the atmosphere at all stages of the enterprise's technical process. The principal sources generating inorganic dust during open mining of iron deposits include: blasting operations in an open pit, the work of transfer points, the enrichment process at a factory, pellet firing as well as dusting from the surfaces of stock dumps and dry tailings beaches.

show abstract

An Advanced Technology for Stabilizing Dust Producing Surfaces of Built-Up Technogenic Massifs During Their Operation

Cited by 4 publications

References 0 publications

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

Analysis of Air Monitoring System in Megacity on the Example of St. Petersburg

Development of an Engineer Operation Aimed at the Reduction of Atmospheric Dust Pollution in the Decommissioning of Iron-Ore Treatment Waste

Contact Info

Product

Resources

About