Urban underground space, new Strategy in Urban Development

Underground spaces have been used in residential, religious places and also for storage of goods because of their security and climate aspects for a long time. Furthermore nowadays because of the price of lands, shortage of spaces, especially in highly crowded cities, traffic and environmental problems, with different approach in transportations and infrastructures urban utilities basis are highly attracted. Aim of this paper is introduction of underground space, their dimensions and advantages. Underground development will be an excellent solution for problems and complementary contemporary urban requirements without destruction of culture heritage and damage of the environment. Underground development approach in this research has been done with historic, descriptive, analytical and case study research methods. The result of this paper shows: Underground space has basic and positive potentials in sustainability context. These potentials consist of temperature stability, sustainability in hard climate, stable in critical conditions and accidents, source of space; energy and etc. urban underground development approach can be used in solution of urban problems and upgrade their sustainability in big cities such as Tehran. The Urban Underground space development approach has many benefits for improving urban life quality.