Types and characteristics of flood control gates

　　Flood gates are mainly used to prevent flooding, protect the safety of embankments and water conservancy facilities, the main types include:1. Prefabricated panel flood gate. It is composed of prefabricated steel plate structure, relatively simple structure, easy production, high efficiency, but difficult installation and complex maintenance.

　　2. Metal door panel flood gate. The metal door panel and the support structure are combined, the structure is detailed, the durability is high, but the price is expensive.

　　3. Cylindrical flood gate. The door plate is combined and supported by the cylinder elastic segment, which has good sealing property, but the cost is high and the installation is difficult.

　　4. Propeller type flood gate. It is composed of spiral door plate, support frame and runner, with high water resistance and high flow rate, but it is difficult to operate.

　　5. Inflatable flood gates. It is composed of inflatable film, occupies less space, has low cost, but has poor sealing and is limited by air pressure.

　　The main features of flood gates include:1. Good sealing. The door panels and door cracks are well sealed to prevent water leakage.

　　2. High resistance. The door plate has strong water resistance and can withstand a certain water potential impact.

　　3. Easy to operate. The door panel must be able to open and close easily and quickly.

　　4. High durability. It can resist the erosion of harsh environment such as water flow and pressure.

　　5. The installation is stable. The fixed structure should be stable and fully absorb hydraulic, water pressure and impact.

　　6. Good impact resistance. The door panels can withstand the impact of currents and floating ice without being damaged.

　　Flood gates are sealed to contain excessive flood water, preventing flooding of cities and damage to industries. Therefore, the design and construction of flood control doors should take safety as the primary goal, and adopt safe and reliable flood control technology. With the increasing need of flood control in urban central areas, the sealing and impact resistance of flood control doors will be the focus of design and improvement.