Fire preventing and extinguishing method by injecting high-water-content foaming materials into underground coal mine goaf
A foaming material and high-water material technology, which is used in fire protection equipment, fire prevention, dust prevention and other directions to achieve outstanding flame retardant effect, overcoming easy re-ignition, and stable structure.
Active Publication Date: 2015-08-19
徐州市洛克尔化工科技有限公司
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[0004] The purpose of the present invention is to provide a method for preventing and extinguishing fires by injecting high-water foaming materials into the underground goaf of a coal mine. Coal Spontaneous Combustion Prevention and Control in Thick Coal Seam Goaf
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[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0026] Such as figure 1 As shown, in this method, the super absorbent material A liquid and the super absorbent material B liquid are first mixed and stirred to form a high water material slurry, then air of a certain pressure is passed into the foaming device, and foaming material is injected into the foaming device at the same time After the shape of the foam ejected from the injection nozzle is uniform, inject a certain flow rate of high-water material slurry into the foaming device, and finally inject the high-water foaming material flowing out of the injection nozzle into the goaf until the fire area is completely sealed; , the superabsorbent material A liquid is made of the following components by weight: foaming agent 10-20, thickener 10-20, quick-setting agent 1-3, inorganic filler 40-60 and water 40-60 ; The superabsorbent material B liquid is made ...
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The invention discloses a fire preventing and extinguishing method by injecting high-water-content foaming materials into an underground coal mine goaf. The fire preventing and extinguishing method includes the steps of mixing a high-water-absorption material liquid A with a high-water-absorption material liquid B and stirring to form high-water-content material slurry; feeding air into a foaming device while injecting foaming agents into the foaming device; injecting the high-water-content material slurry into the foaming device after foams sprayed out of an injection spray head are uniform in shape; injecting the high-water-content foaming materials flowing out of the injection spray head into the goaf till a fire zone is sealed completely. The fire preventing and extinguishing method by injecting the high-water-content foaming materials into the underground coal mine goaf is convenient to operate and low in cost; the generated foam slurry is high in water content, not only can water be delivered to cool the fire zone, but also sealing and oxygen insulation of the fire zone can be achieved, and accordingly, the fire preventing and extinguishing method is remarkable in fire preventing and extinguishing effect and particularly applicable to spontaneously-combustible roof-caving coal seams.
Description
technical field [0001] The invention relates to the technical field of fire prevention and extinguishment in coal mine well areas, in particular to a fire prevention and extinguishment method for injecting high-water foaming materials into goafs of coal mines. Background technique [0002] In my country's key coal mining areas, more than 56% of mines have the danger of coal spontaneous combustion, and fires caused by coal spontaneous combustion account for more than 90% of the total number of mine fires. In recent years, due to the vigorous promotion and application of fully mechanized top coal caving technology, the production efficiency of coal mines has been greatly improved. Spontaneous coal fires occur frequently, which has become one of the main factors restricting mine safety production. In the prevention and control of coal spontaneous combustion, foam materials have the advantages of large covering space, good oxygen insulation effect, and low cost. Therefore, the...
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Login to View More IPC IPC(8): E21F5/08E21F17/103
CPCA62D1/0071E21F5/08
Inventor 刘春张云峰
Owner 徐州市洛克尔化工科技有限公司