Water supply methods for fire scenes in four public places

With the continuous development of society, large-scale public places continue to rise, buildings are luxuriously decorated, there are many flammable materials, electrical equipment, tall, complex structure, large internal space, and more. And buildings adjoin each other, lack of fire water, and some roads are not open. In the event of a fire, the situation is complicated, it is difficult to fight, the burning is fierce, the spread is rapid, and casualties and property losses are easily caused.

To effectively fight such fires. Fire extinguishing water must be guaranteed. Fire-fighting water sources in crowded places are limited. Extinguishing fires in large-scale personnel-intensive places requires a lot of fire fighting water. How to solve the contradiction at this moment and do a good job in the water supply of fire places in crowded places is a topic that cannot be ignored. The following is how to use the firefighting equipment provided to give full play to the subjective initiative of firefighters and to provide water supply for the fires in the fires in densely populated areas. The following China Rescue Equipment Network put forward four views:

First, correctly deploy and use water vehicles

The correct deployment of water-supply vehicles to ensure adequate water for fire fighting in front of water cannons is an important condition for obtaining fire in densely populated areas. It is the purpose of fire water supply to obtain larger fire water with less power. In the case of fire suppression in densely populated areas, the following points should be assigned to the use of water-supply vehicles: 1. The first dispatches large-scale water tankers, water-supply trucks, and enhances its own water-carrying capacity to extinguish the fire in one fell swoop or to prolong the supply of water under insufficient conditions. Extinguishing water time. In order to organize water supply lines to avoid the emergence of water guns. 2, according to the size of the fire pump water flow, determine the use of occasions.

When the water source is near and relatively abundant from the fire site, the fire truck with large flow pump should stop at a reliable source of water to directly extinguish the fire. When a relay water supply is used far away from the water source, the large flow fire truck stops at the water source and supplies water to the vehicle ahead. 3, according to the size of the fire truck tank selection car. Large water tanker fire trucks should be stopped and fired in front of the fire. Because of the large amount of water carried by the large tonnage, under the premise of unstable supply of fire water, a long time of fire extinguishing water can be guaranteed. 4. Vehicles that form water supply pipelines should use the squadron as the unit group line. Due to the fierce burning of fires in densely populated areas, flammable materials, long time for fire fighting, and the large number of fire trucks to be called, there are many warring squadrons. Therefore, it is necessary to form a water supply trunk line with the squadron as the unit to maintain the integrity of the squadron so as to facilitate command. And fire extinguishers. 5. The parking position of the vehicle must be reasonable. In combating fires at densely populated places, the number of vehicles used in the adjustment is heavy. Attention should be paid to parking the vehicle so that it can be easily moved without affecting the normal traffic of other vehicles.

Second, the correct laying of water supply lines

The correct laying of water supply lines will, to a certain extent, greatly affect the quality of the water supply to the fire site. The laying of water hoses shall be as follows: 1. Laying of water supply lines shall be short, straight and positive. Short is to shorten the water supply line as much as possible to reduce pressure loss and shorten the water supply time. Straight is to minimize the bending of the hose, no dead corners and dead bends, to ensure smooth flow. It is precisely that the laying of the water belt should be laid along the side of the road, so as to avoid laying in the middle of the road and affecting traffic. 2. In the case of fire suppression in densely populated places, if the water supply is sufficient, the water zone shall be laid according to the fire pump flow of the water supply fire truck, and the maximum water supply capacity of the water supply car shall be fully utilized. If necessary, the double trunk line may be used to provide water supply to the fire site. 3, the water supply pipeline should try to use large diameter water. Due to the small resistance of the large diameter water flow, the flow rate is fast, and the water flow can be increased to ensure the water supply. 4. When the water supply line is maintained and the water supply line crosses the road, a water bridge protection bridge should be laid at an appropriate position on the water belt to avoid the occurrence of water breakage due to the passage of the vehicle, which will cause interruption of the water supply and affect the fire. In long-distance water supply, people should be sent to inspect the water zone in order to ensure uninterrupted water supply.

Third, the correct use of fire water

In the fire suppression of people-intensive places, because of limited municipal or natural water sources around the fire site, how to use limited water sources to organize good water supply in the fire field is a prerequisite for successful fire fighting. In general, municipal fire hydrant systems in densely populated areas are mostly branched. First, the diameter of the pipeline is relatively small, so its water supply capacity is limited. In practice, it must be selected according to the actual water supply capacity of the water source. After the fire brigade squadron commander arrives at the fire site, fire extinguishers should first use the fire hydrant near the fire site to shorten the water supply line, speed up the water supply, control the spread of fire, and eliminate the need to use water sources Phenomenon; second is the priority to use a large amount of water, water to facilitate water. Due to the large amount of combustibles in densely populated areas, the fierce combustion, and the large amount of water used in the fire, there must be a concept of protracted warfare, relying on an adequate and reliable source of water; and thirdly, due to the impact of weather changes on people-intensive places, fires can easily occur. The formation of a new fire point will easily lead to the spread of fire to the adjacent buildings, causing fire to join the camp. Therefore, in order to adapt to the changes in the fire field, a certain amount of reserve water sources and certain water supply and expulsion maneuver forces must be reserved to cope with the occurrence of various complicated conditions; the fourth is to determine the shape, size, and pressure level of the fire hydrant pipe network according to the densely populated places. Decide the number of fire hydrants to be used to prevent water shortages from occurring and affect the use of fire extinguishing water to prevent blind parking water absorption. Fifth, when using municipal pipe network to absorb water, it should use trunk water sources as much as possible and use less water on branch lines. The water pressure of the mains water source is high and the flow rate is large. Therefore, the water supply for the fire trucks can be appropriately parked on the mains water source according to the flow rate.

Fourth, choose the correct water supply method

In the fight against fire in personnel-intensive places, choosing the right water supply method is the prerequisite for successful fire fighting. Fire-fighting forces generally use direct water supply, serial water supply, water supply and water supply, and water supply and water pump combined water supply methods to solve the problem of water supply in the fire suppression of people-intensive places. In practice, which method of water supply should be applied flexibly and flexibly according to the actual conditions of the fire site. Under normal circumstances, due to the lack of water or water-saving personnel intensive fire facilities, most of the water supply or water supply in series. In the actual fire suppression, the principles of first direct water supply, secondly relay water supply, and finally water transport and water supply should be grasped so as to obtain the largest fire fighting water with less vehicle input. In actual combat operations, direct water supply should be used when the distance between the water source and the fire site is relatively short. In the case of extraordinary narrow road conditions, many obstacles, and inconvenient traffic, the fire trucks can only use one-way driving, and should also use serial water supply, and should not carry water.