The U-channel has a high drainage capacity. Due to its unique shape, the U-channel can collect and expel rainwater more quickly. This means that even during heavy rain, the U-channel can effectively handle large volumes of rainwater, reducing the risk of urban flooding. Additionally, the U-channel boasts strong flood resistance. Its special design allows it to better withstand flood impacts. It can effectively prevent the spread of floods, safeguarding the city's safety. This is a crucial tool for cities frequently threatened by floods.