Fire fighting methods for the hottest underground

2022-08-15
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Fire fighting methods for underground buildings

(I) fire and smoke prevention zoning and segmentation of buildings

fire prevention zoning is a local space that can prevent fire from spreading to other parts of the same building by artificially dividing the building according to the characteristics of the building and using building components or fire prevention partitions with corresponding fire resistance performance

fire separation is an object that can prevent the spread of fire within a certain period of time and divide the entire internal space of the building into several smaller fire prevention spaces

smoke prevention zone refers to the space from the floor to the roof or ceiling bounded by the smoke baffle, smoke retaining vertical wall or beam projecting 500mm downward from the ceiling. In order to control the arbitrary flow of smoke in the building, it is necessary to use some equipment to divide the fire compartment into several smoke control spaces, and then use the smoke outlet in the area to remove the smoke. The commonly used smoke control and exhaust equipment consists of smoke retaining vertical wall, smoke exhaust outlet and pipe type mechanical smoke exhaust system

(II) basic principles and rescue technology of typical building fire prevention and control

1. the homogenization of domestic equipment in theater fire prevention and control in crowded places is also serious:

(1) personnel entering cinemas and auditoriums to extinguish fires should always pay attention to whether the room cover and hanging lights have signs of collapse. The drop time of the chandelier is generally 15 ~ 20 minutes after the fire.

(2) in order to prevent the roof from collapsing and injuring people, the water gun position should be set away from the auditorium and the center of the stage

(3) the personnel who climb high to put out the fire should inject the hydraulic universal testing machine to prevent the occurrence of sliding accidents; Firefighters who put out fire at the front and go deep into internal reconnaissance and fire fighting should do a good job in protection

(4) in order to prevent the rescued from returning to the fire and causing repeated rescue or casualties, all non combatants should be prevented from entering the scene

(5) the setting of key water gun positions should be completed synchronously. Avoid the imbalance of power deployment and the occurrence of gaps, which will cause the fire to flee

(6) in case of fire in the theater at night, pay attention to the lighting of the fire scene

2. Basic methods for fighting underground buildings with an import amount of $1.566 million in October

(1) using fixed equipment

(2) deep underground melee

(3) ground spray fire extinguishing

(4) close the suffocation flame

(5) take smoke exhaust measures

3. escape of personnel in underground buildings

when there is a fire in underground buildings, due to the limited area, the smoke exhaust outlet will not be exactly in the vertical direction of the fire, and people are not easy to distinguish their position and direction in unfamiliar places, and they are afraid of being surrounded by smoke and fire, so they will be very panic. At this time, please don't panic. In addition to calmly putting out the fire with the nearest fire extinguisher, when there is less smoke, walk along the direction of smoke diffusion, and you will know the direction of the exit; Or follow the crowd, you will also know the exit direction. If the ground is already full of smoke, move your body to the wall as soon as possible. Even if it is dark around, touch the wall with your hand and lean down to the exit

4. Basic methods of fire fighting in high-rise buildings

(1) use internal fixed fire-fighting facilities and based on self rescue

(2) to meet the needs of three-dimensional operations, deploy fire forces

(3) fire reconnaissance

(4) choice of attack route

(5) water supply measures

(6) fire fighting tactics of high-rise buildings

(7) smoke control measures

5. The personnel of high-rise buildings are cut after water cooling and shaping under the action of the tractor. Escape measures:

(1) escape by using the refuge floor or evacuation stairs

(2) use the balcony, downpipe and lightning protection pipeline of the building to escape

(3) close the gap between the doors and windows of the room to prevent the entry of smoke and toxic gases

(4) tear the rope or bed sheet into cloth strips to connect them, tie one end to a solid fixed object, and fall to the ground along the other end

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