SHIELD TUNNEL CONNECTING METHOD

PROBLEM TO BE SOLVED: To provide a shield tunnel connecting method which is applicable to the connection of two shield tunnels by enhancing the stability of the natural ground and achieving excellent water cutoff performance. SOLUTION: A first tunnel is excavated to a first tunnel excavation locatio...

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Bibliographische Detailangaben
Hauptverfasser:	TOMIDOKORO TATSUYA, TAKAHASHI SATOSHI, HIBIYA MINORU, KAMEI YOSHIYUKI, YONEZAWA MINORU, KANAMORI KENJI, AKIYAMA HIDEO, SHIRAI SHINICHI, KUMABE TAKEHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a shield tunnel connecting method which is applicable to the connection of two shield tunnels by enhancing the stability of the natural ground and achieving excellent water cutoff performance. SOLUTION: A first tunnel is excavated to a first tunnel excavation location by a first shield machine 1, and a second tunnel is excavated to a second tunnel excavation location by a second shield machine 2. Then a first cutter device 11 of the first shield machine 1 is retreated to the inside of a first outer trunk 10, and the second shield machine 2 is advanced to excavate the earth present between the first and second tunnels. Thereafter a second cutter device 21 is radially contracted, and a second cutter portion 21A and a mobile inner cylinder portion 21E are advanced into the interior of the first outer trunk 10. COPYRIGHT: (C)2005,JPO&NCIPI