The forest fire in Mianning, Sichuan Province lasted for 5 days. How to put out forest fires?

On April 20, a fire broke out in the forest of Mianning County, Liangshan Prefecture, Sichuan Province. On the evening of 23rd, a sudden strong wind of magnitude 8 triggered Fei Huo, which caused another mountain to catch fire and formed a new fire. At the first time, more than 2,000 people from Sichuan Forest Fire Brigade, Liangshan Fire Rescue Detachment, Liangshan Armed Police Detachment, Liangshan Professional Fire Fighting Team, Semi-professional Fire Fighting Team and Militia put into fighting. The mountain fire burned continuously for five days until 6: 5438+03 on April 25, and the fire was obviously weakened. At present, teams are still fighting to clean up, and 53.2 kilometers of fire lines have been put out in these five days, which shows the scale of mountain fires and pays tribute to the contributions and efforts made by these retrograde people for people's lives and property.

The cause of forest fire Forest fire is a very terrible thing, because there are a lot of combustible materials that are the material basis of fire. In addition, the fire line weather is also an important condition for fire, and the fire source is the leading factor of forest fire. These three conditions are indispensable, indicating that forest fires can also be prevented. There are two common causes of forest fires. One is natural factors, such as lightning activity, volcanic eruption, meteorite falling and so on. The most common thing in our daily life is lightning fire, which is more common in Daxinganling, Inner Mongolia and Altay, Xinjiang. But most forest fires are caused by human factors, such as burning wasteland, landslides, outdoor heating, smoking, children playing with fire and so on.

The methods of fighting forest fires have rich experience in the face of forest fires, which are generally divided into three types:

First of all, heat dissipation and cooling, so that the temperature of combustible materials is reduced to below the ignition point and extinguished, mainly by spraying cold water on combustible materials to absorb heat, cooling down, cooling to below the ignition point and extinguishing; Covering burning materials with wet soil can also achieve the effect of cooling.

The second is to isolate the fire source, so that the burning combustible materials are separated from the unburned combustible materials, which destroys the conduction of the fire and achieves the purpose of extinguishing the fire. In order to cut off the fire source, fire isolation belt, fire ditch, firewall, fire forest belt and chemical fire extinguishing agent are usually used to isolate the fire source.

Finally, cut off or reduce the oxygen needed for forest burning, and make it suffocate. The main method is to put out the fire directly with fire extinguishing tools, cover the fire with sand, and dilute the oxygen needed for combustion with chemicals, which will temporarily isolate combustible materials from the air and suffocate them.

Prevention of Forest Fires Most of the forest fires that occur in China every year are caused by human beings, so we should be highly vigilant, consciously abide by the laws and regulations on forest fire prevention, prohibit bringing kindling into the forest, do not play with fire in the wild, discourage others from playing with fire in time, and prevent forest fires from ourselves.