Permeable pavement structure

Abstract

The invention discloses a permeable pavement structure which is provided with a surface layer of a porous bitumen mixing material, a middle surface layer of the porous bitumen mixing material, a permeable open grading lower surface, a grading gravel base layer, a filtering layer, a geotextile layer and a soil base layer from top to bottom. The invention overcomes the defects caused by the watertightness of a traditional pavement, provides the pavement structure with good noise reducing and skidproof functions and good pavement performance of high temperature stability, abrasion resistance, fatigue resistance, water damage resistance and the like, and is widely applied to various roads of sidewalks, parkways, bicycle roads, parking lots, residential quarters and the like.

Description

technical field [0001] The invention relates to a pavement structure, in particular to a permeable pavement structure with good ecological benefits. Background technique [0002] In recent years, a large number of roads have been built in various cities across the country, which greatly facilitates people's travel and promotes the development of our country's economy. But because urban road basically all adopts impermeable hardened pavement (promptly " cementized " pavement), also brought a lot of traffic and environmental problems to the city. [0003] Because the road surface is not permeable to rainwater, the replenishment of groundwater by rainwater is blocked. Since the city collects groundwater exceeding the standard every year, if the rainfall cannot be replenished in a timely and effective manner, a land subsidence zone will be formed, which will cause serious damage to geology and buildings. Huge damage. The hardened pavement will also bring serious harm to the ec...

AI Technical Summary

Problems solved by technology

[0003] Because the road surface is not permeable to rainwater, the replenishment of groundwater by rainwater is blocked. Since the city collects groundwater exceeding the standard every year, if the rainfall cannot be replenished in a timely and effective manner, a land subsidence zone will be formed, which will cause serious damage to geology and buildings. huge damage

The hardened pavement will also bring serious harm to the ecology: because it reduces the air exchange and air humidity on the ground, it accelerates the formation of the urban heat island effect, and the hardened ground is a "dead ground" that will affect the ecosystem on the ground. It makes the water ecological factors unable to circulate normally, breaks the balance of the urban ecological system, and destroys the normal growth of vegetation; when it rains, the rainwater is first discharged into the sewer through the drainage slope or the surface ditch on the ground, and the rainwater has to go through a long period of time before entering the sewer. Only long-distance surface runoff can enter the urban underground drainage system. This process dissolves relatively clean rainwater into a large amount of urban surface pollutants, resulting in secondary pollution in the process of surface runoff. If the secondary polluted rainwater passes through the city The drainage system enters the surrounding surface natural water bodies, which will aggravate the pollution of these natural water bodies; in addition, rainwater collects on the ground, and a large amount of it is concentrated on motor vehicle and bicycle lanes. increased energy consumption

[0004] In addition, due to the serious lag in the development of urban infrastructure in my country, urban drainage facilities cannot effectively meet the requirements of drainage and flood control during the rainy season, and impermeable pavement will undoubtedly increase the flood control pressure of urban drainage systems. An important factor for urban waterlogging during the rainy season; in addition, impermeable pavements accumulate water on the surface during rainy days, and motor vehicles are prone to "drifting", "splashing" and "glare" when passing, which will also increase the safety of urban traffic Hidden danger

[0005] Based on the various drawbacks of the impermeable pavement mentioned above, the impervious pavement used today is less and less suitable for the sustainable development of the urban ecological physical environment. Therefore, in the construction of urban road pavement, we should consider choosing a Pavements with good ecological benefits and good water permeability

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