ACUTE CURVE SHIELD MACHINE

ACUTE CURVE SHIELD MACHINE

PURPOSE: To secure the sectional area of a shield tunnel and dispense with shafts. CONSTITUTION: A circular restarting opening is formed at the side face of a vertically elliptical shield and covered with a freely opening/closing gate 5. Excavation is stopped at a bend point and a circular shield ma...

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Hauptverfasser: SATSUTA TOSHIKAZU, KAMIO MASAHIRO
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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creator SATSUTA TOSHIKAZU
KAMIO MASAHIRO
description PURPOSE: To secure the sectional area of a shield tunnel and dispense with shafts. CONSTITUTION: A circular restarting opening is formed at the side face of a vertically elliptical shield and covered with a freely opening/closing gate 5. Excavation is stopped at a bend point and a circular shield machine 10 is assembled within the machine and started again from the opened gate 5. The clearance between the shield machine 10 and the segments S1 is sealed with an entrance rubber packing at the entrance 7 for restarting.
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subjects EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
title ACUTE CURVE SHIELD MACHINE
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