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| Application of high strength composite foaming material in fire prevention and extinguishing of working face |
| Jian Yuerong |
| Shanxi Jinshen Shaping Coal Industry Co., Ltd, Xinzhou 034000, China |
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Abstract In view of the fact that the 10202 working face of Ciyaogou Coal Mine is affected by comprehensive factors such as coal seam depth, mining method and field production conditions, resulting in a large number of air leakage in the mining process of the working face, which is easy to cause the spontaneous combustion of residual coal in the goaf of the working face, the high strength composite foaming material is used to grout and seal the air leakage sites. The field application results show that after the measures are taken, the overall air leakage of the working face decreases from 130 m3 / min to 64 m3 / min, and the air leakage of surface cracks decreases from 95 m3 / min to 25 m3 / min. The air leakage of the working face is effectively controlled, which has a good inhibitory effect on the prevention and control of spontaneous combustion of residual coal in the goaf.
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