随着经济的发展,当前世界城市人口迅速增长,高层建筑和地下建筑大量兴建,因此单位面积的人口数越来越高。许多高层公共建筑物中各种业务名目繁多,各类人员来往频繁。地下铁道,地下隧道,地下商场中车流,人流拥挤。因此引起火灾的各种因素急剧增加。惨重的火灾事件己引起了各方面的重视。 With the development of economy, the current urban population in the world is growing rapidly, and high-rise buildings and underground buildings are being constructed in large numbers. As a result, the population per unit area is getting higher and higher. In many high-rise public buildings, there are many kinds of business names and all kinds of people are frequent. Underground railways, underground tunnels, underground shopping malls, crowded people. As a result, various factors that cause fires increase dramatically. The heavy fire incident has attracted attention from all sides.