Abstract: With the rapid development of exploitation of city underground space，the requirement to design and construction of underground engineering becomes more and more difficult． In this paper，the thought and characteristics of large-span underground engineering are analyzed through studying on new city large-span underground projects in China and those of in foreign countries． Furthermore，research on and summarize the method and technology of these engineering in aspects of survey， site selection，design，construction，planning and etc． The obtained conclusions have some reference to the sustainable development of underground engineering in future．

Key words: underground engineering, engineering design, supporting, large-span, sustainable development

摘要： 随着城市地下空间开发和利用向大跨度、多功能、深地下和立体交叉方向发展，对地下工程的设计施工提出了 越来越高的要求。通过对中国新建城市大跨度地下工程和欧美当代地下洞室工程的研究，分析国内外城市大跨度 地下工程的建设思路和特点，总结这些地下工程在勘察选址、设计和施工以及规划方面采用的方法和经验，对今后 地下工程的可持续发展具有重要的参考作用。

关键词: 地下工程, 工程设计, 支护, 大跨度, 可持续发展