Underground City Networks

摘要

The subsurface of cities began with hosting utility networks, such as sewers and water ducts. Later in major cities, public transport needed bigger tubes for metros and roadways; car parks have developed also, as well as many other uses. Most of these underground works have been planned one after one, as single purpose facilities, without any connection nor synergy. As each of them is the need repairs and extensions, the city soon faces problems of overcrowding. Today underground space use needs new policies in order cities take full benefit of their subsurface. Planning the utility networks may appear as the best model for planning the whole subsurface of the cities in the near future.