In high-rise residential building fires, there are generally three main causes of death. Pen % fun % Pavilion www.biquge.info

One is death by suffocation from smoke poisoning. This is the leading cause of death from fire.

Because fire smoke contains a large amount of carbon monoxide, it immediately combines with hemoglobin to form carboxyhemoglobin after inhalation. Poisoning occurs when the human blood contains 10% carboxyhemoglobin.

When this percentage reaches 50%, death by suffocation.

After years of research, relevant experts have found that the spread of smoke exceeds the speed of fire by 5 times, and its energy exceeds that of fire by 5 to 6 times.

The direction in which the smoke flows is the way the fire spreads.

Extremely hot smoke can form a fire in less than 2 minutes, and it can also pose a threat to people who are far away. Regarding this point, Mu Tianyu once learned about a real case in the United States.

In the case of a fire in a sub-high-rise building, although the fire only reached the fifth floor, there were also people on the 21st floor who were suffocated and died due to the rising smoke.

In addition, due to the appearance of thick smoke, people's vision is seriously affected, so that people cannot see the direction of escape and fall into trouble.

In high-rise residential building fires, the second main cause of death is fire death. Most of the people who were burned to death by the fire were first choked by the smoke or hit by a falling heavy object, and were burned to death by the fire when they were unconscious or unable to escape.

Of course, the third cause of death is jumping off a building and falling to his death. Most of them happened in high-rise buildings, and they lacked self-rescue knowledge, and were cornered by the fire and jumped to their deaths.

Liu Chengwu immediately pressed the intercom call button and said loudly: "Mu Detachment, Jin Brigade, I am Liu Chengwu, and now I ask for me to lead the third squad of the commando team to enter the third unit of the building to search for trapped people." ”

After Mu Tianyu heard it, he didn't say anything, he was originally going to lead the team into the fire by himself and let Jin Chen evacuate. But Jin Chen was inside the building and found a problem.

The two brothers no longer quarrel with each other.

But I was already starting to worry about it. If he and Jin Chen have completed the search for units 1 and 2 and rescued the trapped people, and then returned to the other units that were on fire,

Will the trapped people under the smoke have already been choked and suffocated to death!

Mu Tianyu knows that this time safety range is generally 20 minutes, and no more than 30 minutes at most.

This interval is known as the best time to rescue.

"I'm okay with that." Jin Chen actually agreed to Liu Chengwu's suggestion.

Mu Tianyu immediately said: "Okay, let's start acting!" ”

In this way, three teams of search commandos entered the three units of the building that were on fire.

They began to search layer by layer.

At the scene of the fire, when there is a more serious smoke, the trapped people will first feel difficult to breathe, labor, and begin to cover their noses, cough, and continue to resist.

Some people will bend down, bow their heads, or even lie on the ground, cover their noses and mouths with clothes or wet objects, and breathe filtered air, which will last for a longer period of time and reduce the amount of toxic gases such as carbon monoxide inhaled.

This stage is the most important stage. Of course, it also varies from person to person, and it is very possible to do well and stick to half an hour.

In Japan, there was once a person who tore off his underwear that was wet from a scare pee in the fire of a major earthquake. Originally, it was for comfort, but when the smoke hit, I covered my mouth and nose in a hurry. In the end, he was the only one in the group who held out until he was rescued alive by the firefighters.

Even if it's not done very well, it's possible as long as you make some of this effort for a minute or twenty.

But there are also people who, when exposed to high heat and thick smoke, will struggle indiscriminately, not only will not get fresh air, but will also increase the inhalation of toxic gases, which will increase the oxygen consumption of brain tissue.

That is, when people are in a fire and are unable to resist, about 30 seconds to 1 minute, they may enter a coma and begin to lose self-consciousness.

But at this point, people still have a variety of different shades of reflection, but the reflection is weakened.

At this time, it is only about 2 minutes, and within this time, if you rescue in time, there is still a possibility of survival.

From the 3rd minute, the glucose in the brain tissue is depleted, and the nerve cells begin to die irreversibly, and even if they are rescued, this time period will cause the loss of nerve function.

Eventually, the person begins to experience the loss of circulatory and respiratory functions that are essential for life, the heart beats and breathing, and the large arteries stop pulsating, until they enter the clinical sense of death.

Therefore, in the event of a fire, people should try to flee to a place where there is no smoke.

In addition, cover your mouth and nose with a damp cloth to minimize the inhalation of toxic gases and hot gases.

Bending over or even crawling on the ground is also an effective way to reduce suffocation caused by inhaling thick smoke. Unless the entire space is filled with smoke, then there will definitely be less smoke on the ground.

Thick smoke, especially high-heat smoke, will drift upwards.

During his tenure as the head of the Jiangqiao Fire Brigade, Mu Tianyu strengthened the publicity and popularization of this knowledge.

Therefore, he still has some confidence that the trapped people in the fire can consciously achieve some first-stage self-protection.

In addition, in this fire rescue, the balconies between the two units could have been climbed over, but each house has closed the balconies, and even many residents have installed steel security nets.

This makes it impossible for rescuers to effectively save time and carry out rescues from multiple directions.

In the face of various difficulties, Mu Tianyu, Jin Chen and Liu Chengwu each led a rescue assault team to quickly and carefully search the floor and the trapped people.

Mu Tianyu shouted: "Is there anyone?" He checked every floor and room to make sure that there were no trapped people, and quickly searched the next floor.

Jin Chen and Liu Chengwu also shouted, and they also sped up their search, and soon climbed to the ninth and tenth floors.

Mu Tianyu finally found an old couple on the eleventh floor, both of whom were in a semi-comatose state.

Both of them lay on the ground and covered their entire faces below the eyes with wet towels.

When Mu Tianyu looked at it, he felt that the old couple had done a good job, but the old man was a little weak and frightened, and he was still in a more dangerous state.

He quickly gave the two old men the respirator he had brought to breathe separately, so that they could recover their strength, and their breathing quickly returned to normal. And he lifted them up.

Mu Tianyu guided them to the opposite side of the house, smashed open the door, brought the old couple in, and then closed the door.

He quickly pushed open the window, tied the old man in a knot with rope, and put them down one by one.

At the same time, Mu Tianyu called the ground command: "I am Mu Tianyu, please quickly arrange personnel to go to the only floor that has not been overfired, and pick up an old couple to go downstairs." ”

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