Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tunnel excavating system keeps ventilation costs down
How Norwegian approach to shoveling out rock in country's longest tunnel is solving ventilation problem; project in Norway involves tunnel of 21 mi long which has area of 320 sq ft and is situated 2600 ft above sea level; solution is to use diesel locomotives to haul rail-mounted cars part way in and out of tunnel; locomotives haul train of cars through tunnel, halting at distance of 100 to 400 yd from face; at this point, track branches so that pair of parallel tracks run up to face itself. (43613)
Tunnel excavating system keeps ventilation costs down
How Norwegian approach to shoveling out rock in country's longest tunnel is solving ventilation problem; project in Norway involves tunnel of 21 mi long which has area of 320 sq ft and is situated 2600 ft above sea level; solution is to use diesel locomotives to haul rail-mounted cars part way in and out of tunnel; locomotives haul train of cars through tunnel, halting at distance of 100 to 400 yd from face; at this point, track branches so that pair of parallel tracks run up to face itself. (43613)
Tunnel excavating system keeps ventilation costs down
World Constr
Caplan, B. (Autor:in)
World Construction ; 22
1969
Aufsatz (Zeitschrift)
Englisch
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