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捷克斯洛伐克多年来利用一种装水的大袋子作中、小河流的拦河坝。这种水袋每只长二十至三十米。用坚固的织物制成的袋子其表面涂有一层弹性物质,袋内装满了去除杂物的水。将水袋置于混凝土筑成的地基上,能起到加固水坝的作用。当洪水来到时,河水压力增大,水袋底部能稍微升起,河水即可顺利通过。它还能为水坝前的一道栅拦,以阻挡河水带来的对水坝有危害
Czechoslovakia has for many years used a large, water-filled bag for medium and small river basins. Each such water bag is twenty to thirty meters long. Bags made of sturdy fabric are coated with a layer of elastic material on the surface and the bag is filled with deodorant water. The water bag placed on the foundation of concrete, can play the role of strengthening the dam. When the flood comes, the water pressure increases, the bottom of the water bottle can rise slightly, and the water can pass smoothly. It can also serve as a barrier in front of the dam to stop it from damaging the dam