Ahaiev R.A., Dudlia K.E., Prytula D.O. Establishing the interrelation of the main influencing factors on the safety of methane-air mixture transportation

Details
Parent Category: Geo-Technical Mechanics, 2019
Category: Geo-Technical Mechanics, 2019, № 148

Geoteh. meh. 2019, 148, 3-12

https://doi.org/10.1051/e3sconf/201910900002

ESTABLISHING THE INTERRELATION OF THE MAIN INFLUENCING FACTORS ON THE SAFETY OF METHANE-AIR MIXTURE TRANSPORTATION

1Ahaiev R.A., 1Dudlia K.E., 1Prytula D.O.

1Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine

UDC 622.691.4.:622.8

Language: English

Abstract.

 The results of main mining geological and technological factors interrelation affecting the safety of methane-air mixture transportation in the extraction of coal deposits are shown in article. The calculation of the pipeline diameter and the choice of a vacuum pump for capturing methane-air mixture from underground wells in a real mine is presented. The transportation safety conditions of methane-air mixture are presented.

The influence of the methane-air mixture parameters on the safety of the degassing system is considered using the data of the MM "Sukhodolskoye-Vostochnoye", where the gas mixture is transported through degassing pipes which laid in the mine workings and is carried out due to the operation of the vacuum pump.

The interrelation between mining geological and technological factors that affect at the safety of methane-air mixture transportation using regression analysis is established. The analysis took into account precisely regulated factors. They include: the flow rate of the methane-air mixture in the division, the length of the gas pipeline in the extraction division, the atmospheric pressure in the mine, the depth of the working, the density of the methane-air mixture and the diameter of the pipeline.

When determining the interrelation between the main factors affecting the safety of transportation of methane-air mixture, it was found that the maximum impact is exerted by the consumption factor of the methane-air mixture at the starting point of the gas pipeline. As a result, linear multiple regression was obtained, which made it possible to establish the effect of the methane-air mixture flow at the starting point of the gas pipeline on safe conditions for its transportation. The resulting model of value calculation corresponds to the original data of value original and is described with an accuracy of 95 %.

The obtained results make it possible to predict changes in the safe transporting conditions of methane-air mixture and subsequently manage them when the methane consumption from the boreholes changes with the aim of uninterrupted and trouble-free operation of the degassing gas pipeline.

Keywords: methane emission, methane-air mixture, gas pipeline diameter, mining and geological factors, development of coal deposits, regression model.

References

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About the authors

Ahaiev Ruslan Aguguluevich, Candidate of Technical Sciences (Ph.D), Senior Researcher in Department of Underground Coal Mining Technology, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Dudlya Katherine Yevgenievna, Candidate of Technical Sciences (Ph.D), Researcher in Department of Underground Coal Mining, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Prytula Dmytro Oleksandrovych, Postgraduate Student, Engineer in Department of Underground Coal Mining, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.