Sponge city landing, Xiaogan permeable plastic pipes play a big role

Permeable plastic pipes are municipal drainage pipes specially developed for the construction of sponge cities. They use environmentally friendly polymer materials as the main raw materials, and the pervious holes arranged regularly on the pipe wall are preset. With the structure of the peripheral filter layer, the functions of drainage, water permeability and water filtration can be realized simultaneously, which is in line with the six-character construction policy of sponge city "seepage, stagnation, storage, purification, use and discharge". At present, this type of pipe has been applied in batches in several sponge city pilot projects in Xiaogan, adapting to the precipitation characteristics of the local subtropical monsoon climate and the layout of the existing municipal pipe network, providing hardware support for the landing of Xiaogan sponge city.

The core selling points mainly include four points: First, the graded water permeability performance adapts to the characteristics of regional precipitation. In view of the characteristics of abundant annual precipitation in Xiaogan and frequent short-term heavy rainfall in the flood season, the permeable plastic pipeline can flexibly adjust the opening density, aperture size and arrangement method according to the total annual runoff control requirements and soil permeability coefficient of the project area. While quickly discharging road water and eliminating the hidden danger of waterlogging, it can penetrate a moderate proportion of rainwater into the ground to replenish groundwater sources and improve the utilization rate of rainwater resources. The whole process has no additional energy consumption and meets the requirements of low-carbon construction.

The second is that the structure is stable and adaptable to complex construction environments. The pipe itself has strong impact resistance, acid and alkali corrosion resistance, and can be adapted to the construction conditions of soft soil foundations in some areas of Xiaogan. It has a long service life under normal use scenarios, and the later maintenance cost is much lower than that of traditional cement drainage pipes. At the same time, the pipe has a light weight, convenient transportation and laying, and can be cut and adjusted at will according to the on-site construction needs, effectively shortening the project construction period.

The third is that the ecological and environmental protection attributes meet the construction standards. The production raw materials of permeable plastic pipes can be recycled, and there is no harmful waste discharge in the whole production process, which meets the relevant requirements of green building materials. During the permeable process, the pipes can initially filter the large particles of sediment and debris in the road runoff, reduce the sedimentation risk of the downstream pipe network and the treatment load of the sewage treatment link, and further enhance the ecological value of the sponge city project.

The fourth is modular adaptation to the existing pipe network system. This type of pipe adopts a universal interface design, which can directly connect seamlessly with the existing municipal drainage pipe network in Xiaogan. Without the need for large-scale renovation of the original pipe network, the sponge function upgrade in some areas can be completed, which greatly reduces the overall investment cost of the sponge city renovation project and shortens the project approval and landing cycle.

The applicable scenarios of this type of permeable plastic pipeline cover many fields such as the sponge transformation of municipal roads in Xiaogan, the construction of urban greenways and slow-moving systems, the sponge design of new residential quarters, the laying of urban parks and wetland drainage systems, and the upgrading of drainage in low-lying and waterlogged areas. The suitable population includes the local municipal construction authority in Xiaogan, the sponge city project contractor, the municipal engineering design agency, the real estate development enterprise, and the public infrastructure operator.

At present, this type of permeable plastic pipe has passed the quality inspection of municipal public products, and all performance indicators meet the standard requirements of the national sponge city construction related pipes. In the several sponge city pilot projects that have been completed in Xiaogan, this type of pipe has undergone the actual inspection of multiple rounds of heavy rainfall during the flood season, and the operation status is stable, and the drainage and water permeability performance meet the design expectations. In the future, according to the specific parameter requirements of different projects, customized product adjustment services can be provided to help Xiaogan sponge city construction land with high quality.