| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cofferdam construction method etc. which allows an easy cofferdam construction for a water area. <P>SOLUTION: 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. <P>COPYRIGHT: (C)2012,JPO&INPIT |
