We can see this sad news from major media platforms the other day. It could have been less catastrophic. Just because of the influence of "deflagration", some people will be puzzled. What is deflagration? Why is it so harmful? Deflagration is actually the abbreviation of explosive combustion, similar to the "flashover" we usually hear. It often produces extremely large fireballs in a short time and extremely high temperatures in a short time. Children in rural areas may be deeply touched. In rural areas, there will be a lot of hay on both sides of the river in late autumn, which is often dense. At this time, it will burn violently when it encounters a fire source. Maybe it will be a moment when the flame is relatively strong, but if you get close, you will feel its high temperature. This is the so-called "deflagration". If some people still don't understand, let's think again. If a lot of cotton wool accumulates in a corner, this
So why is there a deflagration? There are two reasons. First of all, there will be all kinds of shrubs and grasses under the forest. Shrub grass is old and will wither and rot every winter, forming some combustible gases on the forest surface. These gases have always existed on the surface of the earth, and they are constantly produced every year with the corruption of grass. Once it encounters an open flame, it will burn as fast as natural gas, generating huge heat and instantly forming a huge flame. The combustion of these gases produces a lot of heat, which may cause an explosion if it is completely closed. The second reason is that the terrain in the forest is complex and diverse, with relatively closed terrain such as valleys, ridges and saddles. In case of fire, the fire source will spread with the grass. When encountering these complex terrains, the fire will still burn in a certain part of these terrains. However, due to the closed terrain, combustible materials in other parts will be uniformly baked by the fire source at the same time. When the ignition point of these substances is reached, it is possible that these substances will burn at the same time, forming "deflagration"
What are the consequences of deflagration? The first is the lesson we learned this time. Just now we mentioned that when deflagration happens, there will be a huge flame. This sudden flame will cause devastating damage to firefighters. Flames may enter the respiratory tract and other parts of rescuers, causing burns to the arriving parts. The deflagration caused by the combustion of a large number of gases and corrupt substances will inevitably produce a large number of harmful gases, which will spread to all combustion areas at one time, leading to the death of rescuers due to harmful gas poisoning. Then there will be a large-scale heat wave, which will also cause burns and scalds to rescuers. Finally, deflagration will also cause the destruction of local ground vegetation and trees, which will cause great harm to the ecological environment. If there is no strong wind, it will not cause rapid spread and deflagration.
This also taught rescuers a lesson, including each of us. For rescuers, when they go out to the police for rescue in the future, they must survey the terrain in advance, try to stand in the area where deflagration is not easy to occur when putting out the fire, analyze the whole fire, avoid opening the complex areas where deflagration is easy to occur, such as valleys, ridges, saddle areas, etc., put out the fire scientifically, and reduce unnecessary personal injuries. Next is a lesson for the local people. Fighting between the army and the people reflects the desire of local people and cadres to help fire officers and soldiers, but protective measures should also be taken before putting out the fire. At this time, the most important thing is to do a good job of personnel transfer in the fire-prone areas, and also pay attention to avoid the impact of deflagration when escaping, such as trying to run to rivers, roads and other open areas without combustible materials.
At the same time, don't try to avoid danger in valleys, saddles and river valleys, because these areas are easy to cause deflagration. At the same time, through this incident, we also saw the harm of harmful gases to the human body. If there is a fire in other places, try to cover your nose and mouth with a wet towel and crawl forward. When necessary, we can take quick measures to rush out of the fire scene. Besides grief, we should also think about the cause of the fire. Bian Xiao believes that this is directly related to the insufficient publicity of forest fire prevention knowledge by relevant departments, the weak protection and supervision of forest fires, and the poor awareness of fire safety among residents near forests. I hope that the next step of forest fire prevention safety will not only be lip service, but also do a good job in publicity, patrol and education with practical actions to avoid such disasters. Other forest areas should also take this disaster as a mirror and review their failures.