Temporary coffering structure using dead load and buoyancy and construction or repairing method for irrigation structure using the same

摘要

The present invention provides a cofferdam structures, by that produced a oebyeokche a double wall water receiving space is formed between the wall and to receive the buoyancy, the unconfigured water filled in the water accommodating space, the water in the water receiving space by populated state in the form to resist the water pressure acting under its own weight, including the weight of water, continue to receive drain the water pressure caused by seawater or freshwater locks, new structures such as retaining walls or the bottom plate continuous with a hydraulic structures, maintenance and reinforcing it as relates to the establishment and maintenance of a way to avoid threatening the structural safety, without expensive disassembly and transportation of large equipment that is easy cofferdam construction and repair of hydraulic structures using the same structure.