随着我国城市建设迅速发展 ,宾馆、商场、剧院、歌舞厅公共场所日益增多 ,而且火灾事故频繁发生 ,由于这类场所人员较多较杂。考虑到保安方面的要求 ,上锁关闭的现象十分严重 ,其疏散通道往往被人为所堵塞 ,致使事故发生时 ,逃生困难 ,引起人员严重伤亡。鉴于上述情况 ,根据《 With the rapid development of urban construction in our country, the public places such as hotels, shopping malls, theaters and dance halls are increasing day by day, and the fire accidents occur frequently. Taking into account the security requirements, the phenomenon of locking and shutting down is very serious. The evacuation routes are often blocked by man-made ones. As a result, accidents have caused difficulties in evacuating and causing serious casualties. In view of the above, according to "