;In recent years, the instability of climate has tended to extreme changes. With the development of industrialization and urbanization and the rapid increase in population demand for land development, environmental changes and potential impacts caused by human activities are unavoidable. All along, natural disasters have been dealt with in a negative way. More and more disasters and loss of life and property have taken place. Therefore, in order to avoid ecological catastrophe and not affect economic development, the introduction of foreign "low impact development strategy This concept mainly integrates management of storm runoff into human development behavior naturally. This study deals with the low-impact development strategy based on the sponge concept, which is an important facility for the development of human life, economy and culture.
Roads are important facilities in the history of human development. In the past, the use of impervious pavement design not only gave rise to runoff on the surface but also caused the soil to lose good penetration and conserve water, thus depriving the soil of the living conditions of microorganisms and reducing the size of the earth The ability to nourish the plant.
A large number of impervious pavement increased, the relative reduction of the natural vegetation cover, reduce the infiltration of rain into the ground water, making water evaporation, can not adjust the surface temperature, heat island effect, high temperature and desiccation situation is serious; in the past urban public Drainage facilities are responsible for the current heavy rainfall, typhoons, heavy rains have flooded phenomenon, without considering the land water, infiltration, stagnation or delayed flood peak, no matter how many of the flood control facilities are unable to withstand the sudden changes in the storm climate, in order to improve the earth Permeability, to increase its water retention effect, the road must use permeable pavement to increase the surface permeable area, without affecting human development or environmental protection, resulting sponge roads.
This research road breaks through the ordinary roads and discharges the water as soon as possible into the drainage system to discharge the old thinking and integrate the existing water conservancy ditches to provide a sponge road with low infiltration and development such as infiltration, water retention and groundwater recharge.
The upper reaches of the water source uses the central island water conservancy ditch as the main channel for flood discharge. In case of heavy rainfall, it can be diverted to both sides of the ditch system, effectively flood diversion and flood reduction. However, surface runoff penetrates into the road base and rainwater can no longer enter the side ditch through surface drains , To achieve the reduction function and greatly reduce the occurrence of flooding.
Following the adoption of the Japanese specification for C40 permeable grading to increase subgrade permeability, load bearing capacity, construction efficiency and reduce budget and easy access to materials, bearing capacity and water permeability during construction, the introduction of smart city concept to network cloud technology link Engineering monitoring equipment, sharing all the monitoring data with the municipal government, so that superior units can also understand the operation of local infrastructure, combining the concept of smart city and Internet of Things.
Keywords: Permeable paving, low impact development, peak delay