我国是一个地域辽阔、人口众多的大国,也是一个自然灾害和各种灾害事故频发的大国,各种灾害事故使人民生命财产受到严重损失,制约着国民经济的发展。世界卫生组织对灾难所下的定义为:任何能引起设施破坏、经济严重受损、人员伤亡、健康状况及卫生服务条件恶化的事件如其规模超 Our country is a vast country with a vast territory and a large population. It is also a large country where natural disasters and various disasters occur frequently. All kinds of disasters have caused serious losses to people’s lives and property and restricted the development of the national economy. The World Health Organization defines disaster as any event that can cause damage to facilities, serious economic damage, loss of life, health conditions and conditions of health services such as ultra-large-scale