第二次世界大战以来,为防御战时空袭,解决城市地面紧张和交通拥挤的状况,世界各国都十分重视地下工程建筑的发展,诸如地下铁道、地下通道、地下商场、地下停车场等等。我国也同世界各国一样,一方面从总体防御的战略角度出发兴建了大量的人防地下工程,另一方面,又将人防建设与城市发展相结合,进行综 Since the Second World War, all countries in the world have paid great attention to the development of underground engineering structures such as underground railways, underground passageways, underground shopping malls, underground parking lots and the like in order to prevent air warfare in wartime and solve the problem of urban surface tension and traffic congestion. My country, like all other countries in the world, on the one hand, has built a large number of civil air defense and underground projects from the strategic perspective of overall defense. On the other hand, it has integrated civil air defense and urban development and conducted comprehensive