There were 4,057 fires in high-rise buildings, killing 168 people. my country began to implement building energy-saving policies in 2005. One of the main measures was to add insulation layers to the exterior walls. Due to the lack of understanding of the dangers of exterior wall

2025/06/1801:32:37 hotcomm 1838

Residential buildings with building heights greater than 27m and non- single-story factory buildings with building heights greater than 24m and warehouses and other civil buildings

are high-rise buildings

According to data from the Fire and Rescue Bureau of the Ministry of Emergency Management,

2021 reported a total of 4,057 high-rise building fires, causing 168 deaths

deaths

The number of deaths increased by 22.6% over the previous year

There were 4,057 fires in high-rise buildings, killing 168 people. my country began to implement building energy-saving policies in 2005. One of the main measures was to add insulation layers to the exterior walls. Due to the lack of understanding of the dangers of exterior wall - DayDayNews

Why is the fire of high-rise buildings so great?

Briefly understand the three characteristics of this type of fire

Flammable and combustible external insulation material

Flammable and combustible external insulation material has become an important "accomplice" in high-rise building fires. my country began to implement building energy-saving policies in 2005. One of the main measures was to add insulation layers to the exterior walls. Due to the lack of understanding of the dangers of exterior wall insulation material , there was no clear regulation on the combustion performance of the material. At that time, flammable and combustible materials such as polystyrene foam board or polyurethane hard foam were mostly used. These materials were very easy to ignite and spread rapidly. After combustion, a large amount of toxic flue gas was generated, which was very dangerous for fire.

" Chimney Effect "

"Chimba effect" causes fires in high-rise buildings to spread rapidly. "Chimney effect" refers to the phenomenon that indoor air rises or falls along the vertical slope of the space, causing the air to increase convection. After a fire in a high-rise building, the flue gas spreads vertically through stairwells, pipeline wells, glass curtain wall gaps and other parts at a speed of 3-4m/s, which can quickly ignite the entire building.

"Wind assists fire"

"Wind assists fire" causes fires in high-rise buildings to be difficult to control. It is determined that the wind speed at a building is 5m/s at a height of 10m; the wind speed at a height of 30m is 8.7m/s; the wind speed at a height of 60m is 12.3m/s; and the wind speed at a height of 90m is 15m/s. Since the upward wind speed is faster, the wind will often be supported by the fire after the fire, and the fire will be more prosperous.

High-rise buildings are constructed.

have strict fire safety requirements and fire protection design.

fire partition, normally closed fire door

positive pressure air supply system, automatic sprinkler fire extinguishing system

automatic fire alarm system, fire control room, etc.

can effectively prevent and control fire

However, high-rise buildings are huge in size and complex in functions

dense in personnel, many dangerous sources, and large fire load

Once a fire occurs

evacuation of personnel and fire fighting

still has great difficulty

How to "get out of your body"

is also a skill that everyone should understand and master

How to escape when encountering a high-rise fire?

Please call the fire alarm phone immediately "119"

If conditions permit,

Quickly press the fire alarm button

Warn other residents as much as possible

When the fire source is determined and the fire is controllable

Do not panic

You should use the surrounding

Fire extinguishers, fire hydrants, and other fire protection facilities and equipment

Assist in the fire in the first fire

If the fire is obviously out of control

You can follow the "three tips" to escape and save

Keyword 1: Escape quickly without smoke

Touch the door lock before opening the door. If the temperature is not high, there is no smoke in the stairwell. Quickly escape along the stairwell. When passing through the stairwell, close the fire door.

(During the downward escape process, if smoke spreads upward and the temperature rises sharply, it is very likely that the evacuation passage below has been blocked by thick smoke and fire. You should evacuate upward to a room far away from the fire floor as soon as possible and close the fire door of the stairwell, and follow "Keyword 2" to retreat and wait for assistance).

Title 2: Thick smoke retreat and wait for assistance

If the door lock temperature is very high or there is thick smoke open, you should retreat and wait for assistance. Block the cracks in the door with clothes, bed sheets, etc., splash water to cool down and prevent smoke. At the same time, call "119" to report important location information such as trapped floors and rooms, and send out distress signals by tying flashlights and waving clothes in a position near the window.

Title 3: Find the fire shelter layer

What is the fire shelter layer? Residential or public buildings with a building height of more than 100 meters must be equipped with a fire shelter. In the event of escape, people can evacuate to the shelter nearby.The function of refuge layer is to allow people to avoid fires, prevent smoke from entering, cause damage to personnel and wait for firefighters to arrive for rescue.

According to the current operating requirements of 50-meter ladder fire rescue vehicles in China, it is stipulated that the height between the first floor and the first shelter layer shall not be greater than 50 meters, so that the ladder truck can be used for rescue. The fire shelter cannot be occupied by people or are occupied by debris. It is equipped with fire protection facilities such as fire hydrant , fire protection special telephone, air supply system, self-spraying system, broadcasting system and other fire protection facilities.

So when escaping

How do we quickly identify the refuge layer?

A picture you can understand

About high-rise building escape

There are three points to pay attention to

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