2, suffocation method, covering other incombustible materials with soil, which is suitable for coal yard;
3, inhibition method, using chemical inhibition.
4, cooling method, irrigation method, suitable for small and medium-sized ore piles.
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First, the cooling fire extinguishing method The cooling fire extinguishing method is to spray the fire extinguishing agent directly on the burning object, so that the temperature of the combustible material is reduced below the ignition point, thus ending the combustion. This is the most commonly used fire extinguishing method. The cooling method is mainly to spray water or other fire extinguishing agents such as carbon dioxide to reduce the temperature of combustion products below the ignition point. Fire extinguishing agent does not participate in chemical reaction during combustion, which belongs to physical fire extinguishing method. At the scene of a fire, in addition to directly extinguishing the fire by cooling, unburned substances can be cooled with water when necessary to prevent the fire from reaching the ignition point. Water can also be used to cool building components, production equipment or container equipment. In order to prevent the deformation of its heated structure and expand disaster losses. Second, the isolation fire extinguishing method The isolation fire extinguishing method is to isolate or evacuate the burning object from the nearby combustible substances to stop the combustion. This method is suitable for extinguishing all kinds of solid, liquid and gas fires. The specific measures to adopt the isolation fire extinguishing method include: transferring combustible, flammable, explosive and combustion-supporting substances near the fire source from the combustion area to a safe place; Close the valve to prevent gas and liquid from flowing into the combustion zone; Eliminate flammable gas or liquid in production devices and equipment containers; Try to stop the diffusion of flammable flammable liquid or flammable gas; Demolition of flammable building structures near the fire source to form a space area to prevent the fire from spreading; And use water flow plugging or explosion to save oil and gas blowout fire; Mud and yellow sand should be used to build dikes to prevent flowing flammable liquid from flowing to the burning point. Third, the suffocation fire extinguishing method is to prevent air from flowing into the combustion area, or dilute the air with incombustible substances, so that the burning substances can be extinguished by cutting off oxygen. This fire extinguishing method is suitable for some closed spaces and production equipment. When suffocation is used to put out the fire at the scene of the fire, incombustible or flame-retardant materials such as asbestos cloth, soaked quilt and wet canvas can be used to cover the combustibles or close the holes; Fill the combustion area with steam and inert gas (such as carbon dioxide and nitrogen); Use the original doors and windows on the building and some production equipment to close the combustion area to prevent fresh air from entering. In addition, if other fighting methods cannot be used, water or foam flooding (perfusion) can be used for fighting if conditions permit. To put out a fire by asphyxiation, we must pay attention to the following problems: (1) The burning area is small and easy to be blocked and closed, and this method can only be adopted when there is no oxidant in the burning area. (2) When extinguishing by flooding (pouring), it is necessary to consider whether the substances in the fire can have adverse consequences after soaking in water. (3) After suffocating and extinguishing the fire, only after confirming that the fire has been extinguished can the hole be opened for inspection. Strictly prevent the closed room or equipment hole of the production device from opening prematurely, which will lead to fresh air flowing into the human body, causing re-ignition or explosion. (4) When putting out a fire with inert gas, a large amount of inert gas must be filled into the combustion zone to quickly reduce the oxygen content in the air and suffocate the fire. Fourth, the suppression fire extinguishing method is to spray chemical fire extinguishing agents into the combustion area to participate in the chemical reaction of combustion, thus stopping the combustion reaction. The fire extinguishing agents that can be used in this method include dry powder, haloalkane fire extinguishing agent and substitute products. When putting out a fire, a sufficient amount of extinguishing agent must be accurately sprayed into the combustion zone, so that the extinguishing agent can participate in and block the combustion reaction. Otherwise, the combustion reaction can't be suppressed, and the purpose of fire extinguishing can be achieved. At the same time, necessary cooling measures should be taken to prevent re-ignition. The fire extinguishing method should be selected according to the nature of the burning substance, the combustion characteristics, the specific situation of the fire site and the performance of the fire extinguishing technology and equipment. Some fires often need to use several fire extinguishing methods at the same time. Therefore, we should pay attention to the timing of fire extinguishing, do a good job of coordination, give full play to the effectiveness of various fire extinguishing agents, and put out fires quickly and effectively.