TRIPLE CYLINDER TYPE TUNNEL BACK-FILLING APPARATUS

PROBLEM TO BE SOLVED: To facilitate intake of an excavated backing material and excavated earth, and to downsize the cross section of an excavated area to reduce the amount of a back-filling material. SOLUTION: The triple cylinder type tunnel back-filling apparatus carries out back-filling of a tunn...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAMOTO KOHEI, SUZUKI ETSUO, ISHINOMAKI ISAO, MURAMOTO TOSHIYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SHAFTS TUNNELS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To facilitate intake of an excavated backing material and excavated earth, and to downsize the cross section of an excavated area to reduce the amount of a back-filling material. SOLUTION: The triple cylinder type tunnel back-filling apparatus carries out back-filling of a tunnel E while removing an existing tunnel structure A. The apparatus includes a front trunk 2 of a triple cylinder type, which consists of an external cylinder 11 having a diameter larger than the diameter of the existing tunnel structure A, for preventing cave-in of the natural ground B, an intermediate cylinder 12 equipped with a cutter head 7 at the front end thereof, and an internal cylinder 13 shielding the interior and exterior of the apparatus. Further, a slurry chamber 26 is formed by using a gap defined by the intermediate and internal cylinders 12, 13.