Original scientific paper

AIR FLOW RESISTANCE PER 100 m OF AN UNDERGROUND OPENING

Vladimir Rendulić

Abstract

The basic linear resistance is often applied to the resistance systematization as the specific resistance of a 100 meter length of an underground ventilation airway. In standard environment the characteristics of such specific resistance are influenced by the room dimensions and relative roughness value that includes hydraulic friction factor of the airway. To determine the specific resistance value, the calculation results obtained after measurements in situ in the mine in question are herewith analysed. For approximate determination the nomogram in Fig. 4 of this paper can be used.

Keywords

mine ventilation; air current; friction factor; specific ventilation resistance (R100)

Hrčak ID:

14549

URI

https://hrcak.srce.hr/14549

Publication date:

4.12.1993.

Article data in other languages: croatian

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