| 摘要 |
Among all natural disasters, flood is the most frequent and devastating. It can be caused by variety of natural and man-made reasons at any time. Therefore, there is a need for permanent protection of commercial and residential buildings, and infrastructures, against flood. Typical permanent flood protection constructions, e.g., levees, embankments and concrete dams, cannot be used for this purpose because they are expensive and inconvenient for protection of a specific building. Once installed, they permanently block access to the area being protected. The claimed invention is aimed at solving this problem. It offers a reliable flood protection system that is 1) concealed, i.e., appears only when water is present and invisible otherwise, 2) adaptive, i.e., adjusts its height to match the approaching water level, 3) autonomous, i.e., does not require any human actions to enable the protection, and 4) can operate without any power source, such as electricity.
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