How to extinguish a wildfire, why must it be extinguished, and can t it be allowed to burn out on it

1. Manual fighting: Manual fighting is a common method for extinguishing ground fires, and it is also an economical and effective method. The fire extinguishing mechanism is as follows:

Use fire-fighting tools to press the fire and reduce the amount of oxygen; Use fire-fighting tools to sweep away the combustibles that have been ignited, fire ashes, coals, and sparks, so that the non-ignited natural materials are removed from the fire source and the preheating effect is destroyed. The method is to form firefighters in groups of 3-4 people, using fresh branches or hand-held extinguishing tools to take turns to light the fire line until the spread is controlled.

The method of operation is: lift heavy pressure lightly, and sweep while playing. Then take the opportunity to pounce and quickly control the spread of the forest fire.

2. Extinguishing fire with water: Water is the cheapest fire extinguishing agent, which can extinguish underground fires, surface fires, and crown fires. In particular, water is necessary to extinguish fires, uncleared logging sites, and primeval forest areas with dense plants and thick humus layers.

3. Extinguishing fire with soil: covering the burning substance with sediment to reduce the amount of oxygen, and even isolate the oxygen and destroy the combustion conditions, which is a relatively old fire extinguishing method. At present, ships and ancient temples are still equipped with sandboxes and sandbags for firefighting.

In forest firefighting, extinguishing piles and falling wood fires is more convenient and effective when there is no water. The method is to use hoes, shovels and other tools to dig up the loose soil nearby, lift the soil and throw it into the flames until the fire is extinguished or the burning material is completely covered.

4. Fire extinguishing with gas: In practice, people gradually realize that when the wind speed is greater than 15m s, the wind can play a role in extinguishing the fire. Wind fire extinguishers were invented based on this principle. A wind turbine is equipped with 2 operators, one person carries the machine and one person carries the oil, and they take turns to operate.

When I saw this problem today, I thought, it's definitely not going to work, it's all burned out, and I am really ignorant, can it still be like this? The mood clicked on this question into it.

Heroic and handsome! <>

The following ** netizens replied!

It is recommended to learn about the 1987 Daxinganling forest fire. It continued to burn for 28 days and nights, more than 50,000 people lost their homes, 211 people died in the fire, and 266 people were burned.

The area burned by the fire was 10,000 square kilometers, equivalent to one city of Beijing, and the area of forest damage was 1.01 million hectares, equivalent to one Portugal. The local forest cover has dropped from 76% before the fire to 60%.

A total of 5.88 million military, police and civilians participated in fighting the fires. Among them, there are 340,000 officers and men of the People's Liberation Army, more than 2,100 forest police, fire fighters and professional firefighters, and 2.27 million reserve militiamen, forestry workers and the masses. The country and the people have caused direct economic losses of more than 500 million yuan.

First of all, your question, why do the mountain fires have to be extinguished, the losses in Daxinganling are as above, there are also people on Liangshan, firefighters would rather sacrifice themselves than be harmed, and they don't want the country to suffer heavy losses. You may want to ask the California wildfires that were extinguished by themselves, and the fire killed 77 people, left more than 1,000 missing, and left more than 50,000 homeless. Firefighters exchanged the lives of 30 people for the safety of 10,000 people in 29 townships and towns of 13,252 square kilometers in Muli County.

Mountain fires are not something that can be extinguished by those keyboard warriors with a few words, if the mountain fires are allowed to burn, then the keyboard warriors will have to redress the grievances of the people who were killed, and ask the firefighters why they did not rescue.

Cut out the problem of the barrier. At an altitude of 3,800 meters, the primeval forest, towering trees, steep mountains, no large machinery, with the strength of the firefighters' hands, how many manpower and how long does it take to cut out a barrier that is enough to surround the fire. Moreover, this accident was not due to the lack of professional ability of the firefighters, or the wrong decision-making of the on-site leaders.

When there are no firefighters, wildfires are extinguished by themselves, which may be limited to the Amazon jungle, a completely uninhabited primeval forest, where the forest ** burns itself and extinguishes itself, and the trees that are burned to ash can also be turned into ash as fertilizer, which is the natural metabolism of the primeval forest.

After the huge forest fire in the Great Khing'an Mountains, the forest fire has been growing, and no one wants to see the loss of these 30 heroes, but afterwards they have to ask the firefighters why they have to save it, and they can only tell you silently with their backs without hesitation at the end that they are protecting the people and the country.

Because the harm of mountain fires is very great, and if it is burned by itself, it will cause great damage to the environment, so mountain fires must be extinguished, and they cannot be burned by themselves.

If the fire is burned by itself, it will cause some relatively large damage to the mountain forest, and the plants above the zero will be seriously damaged, which will lead to more and more damage to the area.

Of course not, otherwise it will cause a bigger disaster, not only for the environment, but also for other living things.

If it is allowed to burn on its own, it will cause even greater economic losses.

The principle of use is mainly to isolate the oxygen needed for the combustion of the mountain fire, resulting in insufficient oxygen to extinguish the fire. Attention should be paid to the distance between the ignition point and the fire area, too far is equivalent to setting fire, too close is equivalent to helping to burn, and special attention should be paid to the wind direction. -- All of this requires experience.

The reason is very simple: the area where the fire burns, the temperature is high, the air flow rises, it becomes low pressure, and the surrounding air flow concentrates towards the fire area, ignite the fire at the appropriate distance, the fire will spread with the air flow to the fire area, and soon form a separation zone without combustibles in front of the fire, thus stopping the advance of the fire. When a fire spreads, it creates an updraft, so that the air flow from other directions will flow over and replenish, forming a gust of wind.

If you artificially light a fire in the opposite direction of the spread of the fire (i.e., in front of the spread of the fire), the two fires will run in one direction and eventually meet. The fire was extinguished because there was no burning material around the two fires, and the oxygen was exhausted in the middle of the fire. This method is generally used when the wind is not very strong.

If the wind is strong, the effect is counterproductive. It's better to find a place to do a pilot, after all, it's a big deal, and you can't just have a theory. Fire extinguishing fireIn sparsely populated and remote areas of Australia, Aboriginal people have been using fire to fight fire for thousands of years.

Now, science is catching up with them. New research suggests that the traditional methods used by northern tribes are the most effective way to reduce seasonal damage caused by fires in much of Seopeia, Australia. Mr. Dick William, an ecologist at the Commonwealth Scientific and Industrial Research Organisation, said:

As far as science is concerned, what indigenous people have done for millennia can be supported by science. "Dick William conducted a four-year study of wildfire control in Kakadu National Park using indigenous methods. The study found that the traditional method is to clear understory shrubs and grasses by igniting fires (burning wasteland) before the peak of the fire danger period in forest areas and letting them burn uncontrollably, which may later become more desirable fuels.

Early arson "will be cooler" and less damaging.

According to foreign media reports, on October 10, 2019 local time, a wildfire broke out in a southern city in California, USA, covering an area of 91 acres. How do you save yourself in the event of a wildfire?

The cause of the wildfire.

Wildfire is a natural disaster, also known as forest fire, forest fire refers to the loss of human control, in the forest and grassland in the forest area of the free spread and expansion, to reach a certain area, to the forest ecosystem and human beings to cause certain harm and loss of forest land and grassland**. Forest fires, natural causes such as high temperature, drought and other weather cause the ground temperature to rise relatively slowly, which is easy to cause spontaneous combustion of combustibles in the forest or on the surface, thus causing forest fires; Another factor is that thunderstorms in summer are easy to cause "lightning fires", and they are also easy to cause forest fires; There are also factors such as volcanic eruptions.

There are three conditions that must be met for a forest fire to occur:

1. Combustibles (including trees, grass and shrubs and other plants) are the material basis for the occurrence of the forest fire town;

2. Fire danger weather is an important condition for fire;

3. The fire source is the leading factor in the occurrence of forest fires.

How to save yourself in the event of a forest fire?

1. Once you find yourself in a forest fire area, you should use a wet towel to cover your mouth and nose, and if there is water nearby, it is best to soak the clothes on your body, so that there is an extra layer of protection.

2. Determine the size of the fire and the direction of burning, and escape against the wind, not with the wind.

3. If the evasion is not timely, you should choose a flat ground with no combustibles nearby to avoid smoke, and you should not choose low-lying land or pits and holes, because low-lying land, pits and holes are easy to deposit smoke and dust.

4. If the mountainside is on fire, you have to run down the mountain, and the fire spreads upwards faster than a person.

1. Do not bring fire into the mountain: Carrying fire into the forest will cause a forest fire if you are not careful, remember to check it before entering the forest!

2. Don't smoke in the forest area: An unextinguished cigarette butt is enough to ignite the entire forest, don't underestimate a cigarette butt thrown around, and don't take a chance on a bridge!

3. Don't picnic in the mountains: The baked food is indeed fragrant, but it can also make the forest dark and painted.

1. Do not bring fire into the mountain.

Carrying fire into the forest can cause a forest fire if you are not careful, so remember to check it before entering the forest!

2. Do not smoke in forest areas.

An unextinguished cigarette butt is enough to ignite the entire forest, don't underestimate a cigarette butt that is littered with a cigarette butt, and don't have a fluke mentality!

3. Don't have a picnic in the mountains.

Grilled food is delicious, but it can also turn forests black, and if not handled properly, our ecology will suffer!

4. Do not burn incense or paper in the forest area.

Burning paper, burning paper incense, although you send your thoughts and thoughts of the deceased, but it will lead to the occurrence of forest fires, which is an irreparable disaster inadvertently.

5. Do not set fire to drive away animals in the forest.

Wild animals are afraid of fire, but forests are even more afraid of fire, so be careful to ignite forest fires while driving away wild animals, and also put yourself in danger.

6. Do not refine the mountains and burn the wasteland.

Burning and other plants and wood ash is a kind of fertilizer, but it is also a danger, and the slightest mistake in the fire will cause immeasurable consequences.

7. Don't light torches in forest areas.

Fire is not allowed to be used for lighting in the forest, a flashlight is more useful than a torch, and at the same time it will not cause a forest fire.

8. Do not make a fire in the forest for warmth.

It is forbidden to light a fire in the forest to warm up and bake clothes, and every small flame that rises in the forest area may be a killer that harms the green ecological environment.