To provide a cofferdam construction method etc. which allows an easy cofferdam construction for a water area.
A joint surface consisted of a side wall part 2 and a bottom part 4 opens a cofferdam structure 1 with an internal part at least partitioned into floating parts 100, 400, an inflowing part 200 and a pouring part 300. In a state where the side wall part 2 is made to float on water surface laterally, water is poured into the pouring part 300 and flows into the inflowing part 200 to set the bottom part 4 to down into the water, thus, putting the side wall part 2 to a state of longitudinally floating on the water. The side surface 3a of a dam body 3 of the cofferdam structure 1 is then positioned alongside the end face of joint surface formed from the bottom part 4 and side wall part 2. Thereafter, the space surrounded by the cofferdam structure 1 and the side face 3a of the dam body 3 is drained of water.
| JPS62228508 | DISCHARGE VALVE FOR DAM |
MURAI KENJI
TAKADA ETSUHISA
KAGAMI YOSHIHIRO
IKETANI TAKESHI
FUKUYAMA TAKAKO
TAKEUCHI SATOSHI
TAGUCHI KATSUNORI
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