铁法煤田煤层自然发火特性及综合防治技术

铁法矿区8个生产矿井中,大兴矿、晓南矿、大隆矿实验煤样自燃倾向性鉴定结果均为Ⅰ类容易自燃,其他矿井为Ⅱ类自燃,开采过程中的自然发火问题较为突出。按照"基础规律研究—预测预报方法确定—防治技术体系建立"的技术路线,形成了具有铁法矿区特色的注氮与注砂堵漏紧密结合的综合防治技术体系。

Spontaneous Combustion Characteristics and Integrated Control Technique in Tiefa Coal Seam

In Tiefa 8 production mine,the identification experimental results of coal spontaneous combustion tendency in Daxing,Xiaonan,Dalong coal mine were class Ⅰ,easy to spontaneous combustion,spontaneous combustion tendency of other mines as Class Ⅱ.The spontaneous combustion problems in the mining process are more prominent.According to the technical route of "basic law to study-forecasting method to determine-prevention and control technology system to establish",this paper has formed a comprehensive prevention and control technology system with Tiefa characteristics that integrated nitrogen injection with injected sand plugging closely.