ILO Home
Volver a la página de entrada
Site map | Contact us English | Français

Base de datos CISDOC

ID (ISN) del documento43819
Número CIS 85-672
ISSN - Título de la serie 0041-5804 - Ugol' Ukrainy
Año 1983
Número de serie
Autor(es) Mihedov N.A., Jazev V.L., Guzenfel'd Z.M.
Título Effect of the opacity of mine air on the level of illumination at the work site
Título original Vlijanie neprozračnosti šahtnoj atmosfery na uroven' osveščennosti rabočih mest [en ruso]
Información bibliográfica Feb. 1983, No.2, p.30. Illus.
Resumen Present methods of designing lighting systems for mines do not take adequate account of light attenuation by airborne dust. The Bouguer-Lambert law of light attenuation by a turbid medium can be developed to yield an equation relating the size, density and concentration of dust particles in air to the light level at a given distance from a source. The equation contains an empirical coefficient, B, which was evaluated by measurements in a coal mine. The experimental value agreed with a theoretical value arrived at by making a number of assumptions about the properties of the dust. Calculations with this value of B showed that the presence of 0.1g/m3 of dust with given properties would reduce the light level 1.5m from a 150-candle lamp from 6 to 4.4lx.
Descriptores (primarios) niveles de iluminación; minas; iluminación artificial; polvos en suspensión aérea
Descriptores (secundarios) polvos de carbón; análisis matemático; estudio de la iluminación
Tipo de documento D - Artículos periódicos
Tema(s) Iluminación, color, visión
Broad subject area(s)
Navegación por categoria(s) Mining and quarrying
Non-ionizing radiation
Lighting and colour