Apron in escape canal in tunnel

The utility model relates to an apron technical field, concretely relates to apron in escape canal in tunnel. This its thickness of apron be 2 -3 centimetre, and the setting link up the more than one air vent on the upper and lower surface of apron. Through the shaping of prepareeing material, stirr...

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Bibliographische Detailangaben
Hauptverfasser:	TAN FUSHENG, PENG BIN, YU HERAN, LIU JIANYOU, WANG YANG, CHEN XUEFENG, LYU GANG, CHEN WUER, MA FUDONG, JIANG XIAORUI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE EARTH DRILLING FIXED CONSTRUCTIONS LIME, MAGNESIA METALLURGY MINING PERFORMING OPERATIONS REFRACTORIES SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG TRANSPORTING TREATMENT OF NATURAL STONE WORKING CEMENT, CLAY, OR STONE
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