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1.发明申请公开(公告)号：US20200173132A1
公开(公告)日：2020-06-04
申请号：US16699523
申请日：2019-11-29
Inventor： Ju-Hyung LEE , Jae-Hyun KIM , Hak-Man KIM
Abstract: A circular pipe member is penetrated into the seabed by a suction pressure, and a plurality of circular pipe members are vertically stacked thereon and integrated thereto to construct a cofferdam. When dismantling the cofferdam, the circular pipe members are disassembled and dismantled in order by using a lifting wire installed at a newly constructed structure installed in the inner space of the cofferdam.
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