随着现代化的发展和生活水平的提高,城市中的高层建筑、地下工程、大型商场、交通枢纽等各类民用建筑、商业建筑、公共建筑不断增多。由于建筑本身及其内部有可燃物存在,特别是装修装饰中大量使用易燃可燃材料及人们用火、用电设备的不断增加,发生火灾的机率也随之增加,火灾对城市的安全造成很大的威胁。高层建筑火灾、地下建筑火灾和化学品火灾是 With the development of modernization and the improvement of living standards, various civil buildings, commercial buildings and public buildings in high-rise buildings, underground projects, shopping malls and transportation hubs in cities have been increasing. Due to the building itself and its internal flammable materials, especially the large number of decoration and decoration of flammable and combustible materials and people with fire, electricity equipment continues to increase, the probability of a fire also increases, the fire caused by the safety of the city is very Big threat High-rise building fires, underground building fires and chemical fires are