Research and Application on Control Technology of Hidden Danger of Spontaneous Ignition in Remining Face in Damaged Area of Small Coal Kiln
Based on the analysis of the spontaneous ignition of the secondary mining face of Dong-203 in the damaged area of small kiln,and the verification by drilling technology,this paper puts forward some anti-fire technologies,such as grouting,nitrogen injection anti-fire,uniform opening area technology,harmful gas drainage pressure in goaf,strengthening prediction and prediction work,and on-site supervision and management,etc.The comprehensive anti-fire technology is applied to the mining face of Dong-203.The safe and smooth mining and withdrawal of the working face are realized.
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