Anti-freezing and anti-thawing device for road and railway roadbeds

The utility model provides a road and railway roadbed freeze thawing prevention device which comprises a drain pipe, the drain pipe is buried in a road or railway roadbed, drain holes are evenly formed in the surface of the drain pipe, a first air bag is arranged in the drain pipe, and the side end...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHAO YUBI, WU YU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE FIXED CONSTRUCTIONS MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
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