WORK EXECUTION METHOD FOR UNDERGROUND CONTINUOUS WALL

PROBLEM TO BE SOLVED: To provide a work execution method for an underground continuous wall capable of improving the efficiency of the head section process of a preceding element. SOLUTION: A preceding element and a succeeding element are subjected to execution in turn by this work execution method...

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Bibliographische Detailangaben
Hauptverfasser: YUI SHINYA, MARUYAMA KATSUO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a work execution method for an underground continuous wall capable of improving the efficiency of the head section process of a preceding element. SOLUTION: A preceding element and a succeeding element are subjected to execution in turn by this work execution method for an underground continuous wall. Seal members 31, 32 sealing the gaps with the inner wall 3a of an excavated groove 3 and blocking the inflow of the slurry on the succeeding element side K are provided on both side edges of a partition plate 5 provided on a reinforced cage 4 for the preceding element. One seal member 32 is made of an air pack type capable of being switched to the sealing state or the seal released state, and concrete is placed to the crest of the preceding element. The seal member 32 is operated to block the inflow of the slurry from the succeeding element, the head section of the placed concrete is removed by vacuum suction to the prescribed depth, and new concrete is placed after the removal to complete the head section of the preceding element.