Study On Technology Of Fire Extinguishing And Preventing With The Denseness Fly Ash In JiNing No.2 Coal Mine

With the development of coal mine plants , .a new topic about how to fully use the pulverized coal ash discharged from the plant combustion furnace was proposed in front of us ,especially how to use it to extinguish and prevent the combustion underground .The paper studied and analyzed the physical and chemical characteristics of the plant coal ash , comparing the fly ash with the soil the common material that is used for fire preventing ,the writer drew a conclusion that the activity of the pure fly ash is very poor ,if we want to use the coal ash in grouting and make it work well in fire extinguishing and preventing ,the fly ash should be activated ,hydrated ,and mudded in a short time .In the other hand ,the denseness materials were studied in application utilizing ,the materials were also used into fire extinguishing and preventing in Jining No.2 coal mine under its special style .From the study ,the idea about fly ash to extinguish and prevent spontaneous combustion was enhanced ,this will be benefit for increasing the consumption of plant coal ash, this study give a firm hand to the environment protecting and improving, also guaranteed for fire preventing underground .