Why do firecrackers explode when dropped into wells?

1. Why do firecrackers explode when dropped into a well?

if the sewer is not opened for a long time, it will produce a large number of toxic, flammable and explosive gases, such as carbon monoxide, irritating gases, suffocating gases, etc. When these gases reach a certain concentration, they will explode when exposed to open flames, and their power will greatly hurt people's lives. Therefore, if the sewer is constructed, ventilation must be turned on, and related operations must be carried out after the sewer is tested to ensure safety. 2. Why are firecrackers so powerful when put into sewers

Methane is most likely to be produced in sewers. Methane is a flammable gas and has a bad smell, which will burn when exposed to open flames. If the methane concentration in the sewer is high, coupled with the open flame caused by the explosion of firecrackers and the methane gas that is easy to ignite, the sewer space is narrow, coupled with the rapidly burning methane gas, the explosion naturally occurs. 3. Why can't we set off firecrackers next to the manhole cover?

We can't set off firecrackers next to the manhole cover because there is methane volatilization in the sewage well. If firecrackers are set off next to the manhole cover at this time, it is equivalent to igniting methane that slowly overflows from the small hole of the manhole cover. And it is extremely easy to be caught off guard and cause a terrible explosion accident.

whether it is for people or themselves, it is a problem that should be paid special attention to. Especially for children who are not deeply involved in the world, parents should be more persuasive and warn about the safety awareness they should have. Even if you encounter children who don't know the depth and set off firecrackers next to the manhole cover, you should kindly remind them to stop the possible dangerous behavior.