Urban flood control and drainage, rainwater collection carat pipe

Urban flood control and drainage has changed from simple rapid discharge to a new model of stormwater management combining seepage, stagnation, storage, purification, use and discharge. In this transformation, rainwater collection carat pipes have become a key link in building resilient drainage systems due to their unique structural mechanics and durability.

The carat tube is made of high-density polyethylene material and is made by hot winding molding process, and the pipe wall forms an I-shaped or hollow structure. This design greatly reduces the weight of the pipe, while giving it excellent ring stiffness. In the face of dynamic loads and deep soil static pressure under municipal roads, the carat tube is not prone to deformation or collapse, ensuring long-term unobstructed drainage channels. In the season of frequent rainstorms, a reliable pipe structure is the first line of defense against pavement collapse and drainage cutoff.

As the core carrier of rainwater collection, the carat pipe has a smooth inner wall, low Manning roughness coefficient, and low water transmission resistance, which can quickly divert rainwater from the catchment area to the storage tank or treatment facility. The pipe has strong chemical stability, acid and alkali corrosion resistance, good adaptability to the initial pavement impurities carried by rainwater, long service life, and reduced the frequency of pipe network maintenance. In the backfill of the pipe trench, the carat pipe is relatively tolerant to the foundation requirements, and the flexible connection method can better adapt to local foundation settlement and prevent interface leakage.

Under the sponge city concept, the rainwater collection carat pipe not only performs the transfer function, but also can be combined with infiltration wells, modular reservoirs and other facilities to build a complete source emission reduction and end storage system. It collects precious rainwater resources in an orderly manner and uses them for green field watering or landscape replenishment, truly realizing the organic unity of flood control and drainage and water resource utilization. Choosing high-quality carat pipes is to implant a calm guard for the urban underground veins, so that every heavy rainfall becomes an opportunity to test the resilience of the drainage system, rather than a fuse for hidden dangers.