| 摘要 |
PURPOSE: A caisson for repairing a pier is provided to improve specialization and reliance on repair works. CONSTITUTION: The caisson, which isolates water around a well(19) of a pier(18) from the well(19) and intercepts the re-approach of the water toward the well(19) to repair a pier, comprises coupling holes formed respectively on the upper, lower ends and the right, left sides of a body, a stiffener formed on the outer circumference, a watertight lever(15) installed under the caisson, a watertight wire(16) for fixing the watertight lever(15) to a well(19) and a protective plate(17) formed on the lower end of the caisson.
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