利势策谈城市地下空间开发管理封朋安从远古时代人类祖先穴居山洞，到近代人们有计划地兴建地下工程；从过去有选择地修建地下军事防御设施，到现今大规模地建设平战两用、军民结合的高水准的综合性人（民）防工程设施，人类在地下空间利用上经历了漫长的岁月，走过了曲折... Lishi discusses the development and management of underground space in urban areas. From the ancient times, human ancestors burrowed in caves; in modern times, people planned to build underground projects; from the past, they selectively built underground military defense facilities, and now they build large-scale peacetime operations. With the high-level comprehensive human (civil) defense engineering facilities combined with the use of military and civilians, mankind has experienced a long period of time in the use of underground space. It has gone through twists and turns...