Strictly speaking, the service life of a drainage channel is affected by many factors, such as whether the pavement is completed according to the construction process proposed by the manufacturer, the complexity of the fluid, whether there is a strong acid-base liquid of sulfuric acid, and whether the weight of the vehicle passing by the surface Exceeding the design load of the trench body and so on. If it is within the control range, the service life of polymer concrete drainage channel is more than 20-50 years. In foreign countries, as a century-old urban underground waterway, polymer concrete products are widely used.