强降雨过后,街道成河、住宅进水、汽车没顶似乎变成国内大型城市的惯例。毫无疑问,随着城市化程度的不断提高,内涝已经成为我国大中城市需要面对的共同难题之一。数据显示,过去3年,全国超过360个城市遭遇内涝,其中六分之一单次内涝淹水时间超过12小时,淹水深度超过半米,北京、济 After heavy rainfall, the streets become rivers and dwellings, and the car does not seem to become a convention in large cities in China. There is no doubt that with the continuous improvement of urbanization, waterlogging has become one of the common problems that large and medium-sized cities in China need to face. Data show that in the past three years, over 360 cities in China suffered waterlogging, of which one in six was flooded for more than 12 hours and the depth of flooding was more than half a meter. Beijing,