地下世界广博无边,可利用的空间也无穷无尽。地下空间,是建筑领域中的一个专有名词,指属于地表以下的建筑空间,包括地下住宅、地下商城、地下停车场、地铁、矿井、军事与穿海隧道等。城市中,尤其是大城市的人口增长迅速,城市地面越来越拥挤,传统的道路交通与城市生活设施,已经不能适应快速发展的现代社会需要,甚至成为制约城市经济 The vastness of the underground world is endless and the space available is endless. Underground space is a proper term in the field of architecture, which refers to the architectural space below the surface, including underground houses, underground shopping malls, underground parking, subway, mine, military and crossing tunnels. In cities, especially in big cities, the population is growing rapidly and the ground of cities is getting crowded. The traditional road traffic and urban living facilities can no longer meet the needs of the rapidly developing modern society and even become an obstacle to the urban economy