井盖结冰如何解冻？环卫工点火炸死两人-快科技-科技改变生活

井盖结冰如何解冻？环卫工点火炸死两人

万南
2016年01月18日 07:55
0

据报道，近日，内蒙古巴彦淖尔市五原县发生窨井爆炸，致2人死亡。原因是小区环卫工点火解冻下水井盖，井中沼气遇明火爆炸。

央视就此发出安全提示，井盖冻住可用热水解冻，严禁用明火，打开井盖后需自然通风，且在井口设置护拦或明显标志。

据了解，窨井内存有沼气，沼气的主要成分是甲烷，其特性和天然气相似。当空气中的沼气密度达到8.6%~20.8%（按体积计）时，遇到明火就会爆炸。

视频：http://www.miaopai.com/show/-diWdSBJo5RatV3f630-tA__.htm

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井盖结冰如何解冻？环卫工点火炸死两人现场动图

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