Construction method of the provisional deadline structure of the dam body

摘要

PROBLEM TO BE SOLVED: To provide a cofferdam structure that can cope with the buoyance that is acted associated with the water drainage work of an inner space in construction.;SOLUTION: A step in which a planned opening position 4a of a through hole 2 on a dam body upstream face 3 is brought into water-tight contact with an opening 21 of a dome body 10 that is a cofferdam structure, and a step in which water is discharged in an inner space 21 of the dome body 10 while weights 50 are sequentially input into the inner space 25 are executed to construct the cofferdam structure.;COPYRIGHT: (C)2013,JPO&INPIT