Traffic tunnel portal protection structure

The utility model discloses a traffic tunnel portal protection structure which comprises a first protection unit and a second protection unit which are sequentially arranged at intervals from top to bottom along a hillside, the first protection unit is arranged at the bottom of a gully, and the firs...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU YIHONG, WU CHAO, LI JUN, LI CONG'AN, LIANG XIANPEI, XU WEI
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 EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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