Comprehensive Benefit Evaluation,Design And Management Of Permeable Pavement

With the acceleration of urbanization,the rapid growth of impervious road area has led to one of the main sources of the urban water logging and urban runoff pollution.Moreover,the rapid removal of road rainwater has also led to the rapid loss of large amounts of rainwater without utilization,which not only wastes precious rainwater resources,but also destroys the natural water cycle process,and reduce the amount of rainwater infiltration.With the advance of the pilot about construction of sponge cities,sponge cities will surely become the development direction of new urbanization in China,Rainfall and flood management systems in foreign developed countries,such as Best Management Practices(BMPs),Sustainable Urban Drainage System(SUDS)and Low Impact Development(LID),which have received good results after long-term application and development.The results can serve as an important reference and reference for China's sponge city construction.A series of problems about environmental and ecological caused by impervious pavement,such as urban heat island effect,environmental pollution,groundwater shortage and water logging risk,the effective management measures should be taken to solve these problems.Rational use of pervious pavement to increase rainfall infiltration can not only restore part of the water conservation function,but also help to alleviate the current urbanization in the lack of groundwater supply,heat island effect and other environmental problems.This paper first analyzes the significance and necessity of the application of pervious pavement in sponge city,and then analyzes the economic,ecological and social benefits of pervious pavement project by AHP and fuzzy comprehensive evaluation method.Quantitative analysis is used to evaluate the economic rationality of permeable pavement construction,and qualitative analysis is made to ecological and social benefits,that is,to evaluate the permeability and permeability of permeable pavement is conducive to the balance of soil ecological environment,and the capillary water in soil is conducive to alleviating the urban heat island phenomenon through pavement pores.The air movement of sound wave through pavement pore is beneficial to reduce noise pollution.The effect of noise reduction is about 3-5 dB.The diffuse reflection of light beam through pavement pore is beneficial to improve light pollution.Reducing surface runoff after pervious pavement is beneficial to flood control and drainage and improving ecological environment.Consciousness,the use of fuzzy comprehensive evaluation method of permeable pavement and non-permeable pavement comprehensive benefits of comparative analysis,draw permeable pavement than non-permeable pavement comprehensive benefits.Then combined with the case of pervious pavement,the paper analyzes the possible problems in the construction links of pervious pavement engineering,such as planning,structural design,construction,operation and maintenance.Finally,from the aspects of public awareness,planning guidance,overall planning and orderly construction,training professional construction and maintenance management team,establishing innovative incentive mechanism and improving government functions,the dissemination and Application Countermeasures of permeable pavement are put forward.