Changes in lung function after working with the shotcrete lining method under compressed air conditions.
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چکیده
منابع مشابه
Changes in lung function after working with the shotcrete lining method under compressed air conditions.
Shotcrete techniques under compressed air are increasingly applied in the construction of tunnels. Up to now little is known about the influence of shotcrete dusts on the function of the lung. The lung function of 30 miners working with shotcrete under compressed air (before and after one shift) was measured. They carried personal air samplers to assess the total dust exposure. Long term effect...
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Tunnel excavation is frequently carried out in rock masses by the drill and blast method and the final shape of the tunnel boundary can be irregular due to overbreaks. In order to investigate the effects of overbreaks a study of the effect of tunnel boundary irregularity has been carried out. This is done developing a computational tool able to take into account fuzzy variables (i.e., thickness...
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ژورنال
عنوان ژورنال: Occupational and Environmental Medicine
سال: 1989
ISSN: 1351-0711
DOI: 10.1136/oem.46.2.128