a watertight enclosure placed or constructed in waterlogged soil or under water and pumped dry so that construction or repairs can proceed under normal conditions.
Nautical. a sealed void between two bulkheads, as for insulation or as an extra barrier to the escape of liquids or vapors.
更多cofferdam例句
And the night shift began to repair the cofferdam for old Jezebel had dropped suddenly back into her old trail.
The foundations were put down by means of a cofferdam which was kept dry by pumping.
Referring to the cost of cofferdam work, we see that, in order to excavate the 58 cu.
The lower part of C bulkhead was doubled and was in the form of a cofferdam.
A hand pump served to keep the cofferdam dry enough for excavating; but in more open material a power pump is usually required.