【摘要】：為了解決某煤礦3304綜放工作面縮面改造期間因采空區(qū)遺煤多、停采撤架時間長、漏風條件復(fù)雜而引起的采空區(qū)煤炭易于自燃的問題,分析了3304工作面縮面改造期間采空區(qū)遺煤易于自燃的原因,并提出了由注水、均壓、注漿組成的綜合防滅火技術(shù)體系。通過監(jiān)測發(fā)現(xiàn),采取上述措施后,回風隅角的CO濃度從停采初期的7.8×10-5下降到縮面完成時的1.0×10-5,回風流的CO濃度從5.8×10-5下降到0,有效地抑制了采空區(qū)遺煤自燃,保證了3304工作面縮面改造工作的順利進行。
[Abstract]:In order to solve the problem of coal spontaneous combustion in goaf due to the large number of remaining coal in goaf, long time to stop mining and long withdrawal time and complicated air leakage condition, the coal in goaf is easy to self-ignite during the reconstruction of 3304 fully mechanized top coal caving face in a certain coal mine. This paper analyzes on the causes of spontaneous combustion of the remaining coal in goaf during the retrofit of face contraction of face 3304, and puts forward a comprehensive fire prevention and extinguishing technology system composed of water injection, pressure equalization and grouting. By monitoring, it is found that the CO concentration in the return air corner decreases from 7.8 脳 10 ~ 5 in the initial stage of stoppage to 1.0 脳 10 ~ 5 at the completion of the cut-off surface, and the CO concentration in the return air decreases from 5.8 脳 10 ~ 5 to 0. 8 脳 10 ~ 5 after the above measures are taken. The spontaneous combustion of coal remains in goaf is effectively restrained, and the reconstruction of face reduction in 3304 face is ensured.
【作者單位】： 神華烏海能源公司職工培訓中心;
【分類號】：TD75

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本文編號：2454053