rubber dam：

Also called the rubber dam, rubber dam or sluice and rubber dam, with high strength synthetic fiber fabric as the bearing frame, inner and outer coating rubber protection layer, processed into fabric, Then, the utility model is anchored on the bottom plate to form a closed dam bag, and the bag type dam is formed by filling and discharging water (gas) through the filling and discharging pipeline. It can overflow, and can be adjusted according to the height of the dam to the upstream water level control, irrigation, power generation, shipping to play, flood control, tide and other benefits.