2004年,多年未遇的大暴雨相继袭击了北京、上海等城市。各城市均发生了严重的积水现象,积水导致交通堵塞、电力中断。专家指出,造成这种情况的主要原因是城市路面不透水。相比之下,以环保技术见长的德国却很少见到路面积水。他们的经验是在城市和乡村铺设透水路面,像人行道、步 In 2004, the torrential rains that have not been encountered in many years hit the cities of Beijing and Shanghai in succession. Severe waterlogging occurred in all cities, with stagnant water resulting in traffic congestion and electricity disruption. Experts point out that the main reason for this is the imperviousness of urban pavement. In contrast, Germany, which has a reputation for environmental technology, seldom sees road water. Their experience is laying permeable pavements in cities and countryside, like sidewalks and steps