Rubber dams are mainly suitable for low-head and large-span dam projects, such as being used as gates or movable overflow weirs on reservoir spillways to increase reservoir capacity and power generation head; being used as low-head and large-span rolling dams or overflow weirs on rivers, which do not require the hoist and gate machine and working bridge of conventional gates; being used as water intake gates, water diversion gates and regulating gates on canal systems, which can conveniently store water and adjust water level and flow; being used as wave breakwaters or tide gates along the coast, which are better than metal gates because they are not affected by seawater erosion and marine organisms; being used for upstream and downstream gates of orifice ship locks with large spans; being used for construction of cofferdams or movable cofferdams, the height of rubber movable cofferdams can be raised or lowered, and overflow can be generated from the top of the weir, which does not require soil to build weirs, can keep the river clean, save labor and shorten construction period; being used for urban garden projects, using colored dam bags, which have beautiful shapes and smooth lines, can add a beautiful landscape to urban construction.