建筑物坍塌事故是指由于人为、气象、地质、恐怖、犯罪、工程质量等因素，造成各种建筑工作结构整体或局部坍塌的灾害。建筑物倒塌事故后果十分严重，容易造成重大的人员伤亡和财产损失，给社会带来不良影响。
Building collapse accident is a kind of disaster caused by man-made, meteorological, geological, terrorist, criminal, engineering quality and other factors. The consequences of building collapse accidents are very serious, which easily cause heavy casualties and property losses, and bring adverse effects to society.
坍塌事故的主要特点
Main characteristics of collapse accident
1、突发性强，人员逃生难。受自然或人为因素影响，建筑倒塌事故随时都有可能发生，且事故前兆很不明显，允许人员逃生的时间极短。这种突发性使人们无法及时逃身，极易造成大量人员的伤亡。
1. The emergency is strong, and it is difficult for people to escape. Affected by natural or human factors, building collapse accidents may occur at any time, and the precursor of the accident is not obvious, and the time for people to escape is very short. This kind of suddenness makes people unable to escape in time, which easily causes a large number of casualties.
图片
picture
2、设施损坏，易引发次生灾害。突发性建筑倒塌事故，可能造成建筑内部燃气、供电等设施毁坏，导致火灾的发生，尤其是化工装置等构筑物倒塌事故，极易形成连锁反应，引发有毒气（液）体泄漏和爆炸燃烧事故的发生。
2. The damage of facilities is easy to cause secondary disasters. Sudden building collapse accidents may cause the destruction of gas, power supply and other facilities inside the building, and lead to the occurrence of fire, especially the collapse of chemical plants and other structures. It is very easy to form a chain reaction, leading to the leakage of toxic gas (liquid) and explosion and combustion accidents.