Urban waterlogging prevention

With the rapid development of economy and society, human development activities are too fast, resulting in frequent extreme weather; With the acceleration of urbanization, the area of ground hardening is too large, and a large number of green spaces, wetlands and ponds have disappeared. It is difficult for rainwater to be drained by itself, and 90% of rainwater must be drained by drainage pipe network. At the same time, garbage blocking sewers, illegal discharge of construction waste and other phenomena continue despite repeated prohibitions. More and more ditches, rivers and ponds have been diverted and filled, resulting in the fragmentation of underground drainage pipe networks in some areas, and the drainage pipe network system has long been overwhelmed.