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在调查学习和设计实践的基础上，本文就放顶煤综采氮气防灭火设计的防灭火注氮流量确定、注氮方法选择、制氮系统选择和辅助防灭火措施等，进行了较为详细的论述。
Based on the investigation, study and design practice, this paper makes a detailed analysis on the determination of flow rate of nitrogen in fire prevention and fire prevention, nitrogen injection method selection, nitrogen system selection and auxiliary fire prevention and control measures for fully mechanized top coal caving. Discussion.