THE AERODYNANIIC CALCULATION OF RAILROAD TUNNELS LINE OF MARABDA-AKHALQALAQI

АЭРОДИНАМИЧЕСКИЙ РАСЧЕТ ТОННЕЛЕЙ Ж.Д. ЛИНИИ МАРАБДА-АХАЛКАЛАКИ

Authors

Abstract

The  provided  air expenses in  tunnel  are  determined with the aerodynamic calculation of train motion pistol effect and after movement effect. It is ascertained, that for the tunnel conditions air expenses that are processed with pistol effect are approximately 2/3 removed towards train motion and 1/3 flows орposite  to  the  free  space  between  train  and  tunnel strengthening. The last one provokes air turbulence and represents common aerodynamic resistance stand face. Despite this, all galleries of Marabda-Akhalqalaqi train main lines can be aerated on expense of train pistol effect with aroused natural pressure. The use of his pressure could be more effective if every chamber and niche will be equipped with ventilation cavity on the both sides of tunnel. The every cavity section area should  be  5.6 m2.  The  noted  measures  will  shorten aerodynamic resistance a rouse by air flowing in distances and would be more outhunted by calculation of railroad tunnels line of Marabda—Akhalqalaqi.

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References

К. З. Ушаков‚ А. С. Бурчаков, Л. А. Пучков, И. И. Медведев. Аэрология горных предприятий. Недра, Москва, 1987, 422 c.

G. Lotsberg. Measurement of the wall friction factor and the installation efficiency of jet fans. Papers of the 9th International conference on Aerodynamics and Ventilation of Vehicle Tunnels held in Aosta Valley, Italy, 6-8 October 1997, 10p.

O. Lanchava, N. Ilias, I. Andras, R. Moraru, I. Neag. On the Ventilation of Transport Tunnels in the Presence of a Strong (Heavy) Fire. ANNALS OF THE UNIVERSITY OF PETROSANI, Romania, 2007, 12p. http://upet.ro/anale/ing%20mec/2007%20rezum.html.

Published

2021-02-18

How to Cite

O. Lanchava. (2021). THE AERODYNANIIC CALCULATION OF RAILROAD TUNNELS LINE OF MARABDA-AKHALQALAQI: АЭРОДИНАМИЧЕСКИЙ РАСЧЕТ ТОННЕЛЕЙ Ж.Д. ЛИНИИ МАРАБДА-АХАЛКАЛАКИ. GEORGIAN SCIENTISTS. Retrieved from https://journals.4science.ge/index.php/GS/article/view/309

Issue

Section

Mining Engineering

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