“九五”消防科技重点专题介绍专题七地下与大空间建筑火灾灭火救援特种装备技术１．研究目的及意义近年来，建筑恶性火灾，尤其是地下与大空间建筑灾害事故逐渐增多，造成了众多的人员伤亡和巨大的财产损失。这些场所的火灾一旦发生，由于其火灾发展、烟气流动规律特殊，往往 “Ninth Five-Year” Fire Science and Technology Highlights Topic Seven Underground and Large Space Building Fire Extinguishing and Rescue Special Equipment Technology 1. The purpose and significance of the research In recent years, the construction of vicious fires, especially underground and large-space construction accidents has increased gradually, resulting in numerous casualties and huge property losses. Once a fire occurs in these places, due to the development of fire and the law of smoke flow, it is often