SOUNDPROOF WALL FOR TUNNEL, AND SOUNDPROOF SYSTEM FOR TUNNEL, USING IT

SOUNDPROOF WALL FOR TUNNEL, AND SOUNDPROOF SYSTEM FOR TUNNEL, USING IT

PROBLEM TO BE SOLVED: To provide a soundproof wall for a tunnel, which inexpensively enhances a soundproof effect without depending on an increase in weight. SOLUTION: This soundproof wall for the tunnel, which is installed in the pit of the tunnel T during excavation, is equipped with a reflecting...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SADOHARA CHIHIRO
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
MINING
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a soundproof wall for a tunnel, which inexpensively enhances a soundproof effect without depending on an increase in weight. SOLUTION: This soundproof wall for the tunnel, which is installed in the pit of the tunnel T during excavation, is equipped with a reflecting section 2 which forms a reflecting surface 20 composed of a concavely-curved surface. The soundproof wall is also equipped with a switching member 3 for switching an attitude of the reflecting section 2 between a front attitude in which the reflecting surface 20 is directed to a cutting-face side, and a lateral attitude in which the reflecting surface 20 is directed to a side surface of the tunnel T. COPYRIGHT: (C)2009,JPO&INPIT