摘要
针对色连二矿12205工作面顶板上部存在浮煤的特殊情况,从煤自然发火条件出发,分析了12205工作面收作期间采空区发生遗煤自燃的原因,并根据该工作面的实际情况和各种防火技术特点,提出了"减少采空区漏风、降低采空区氧浓度"的防火原则,制定了顶板铺设风筒布、建黄土隔离墙、注高分子胶体材料、注氮等防火技术。实践证明,该套技术措施有效保障了色连二矿12205工作面的安全收作。
For the exceptional case that there is residual coal in the upper part of the roof of 12205 working place of Selian No.2Coal Mine, and based on the conditions of spontaneous combustion of coal, the reasons for spontaneous combustion of the residualcoal in goal during the finished period of 12205 working face were analyzed. According to the actual conditions of the workingface and the features of every fire prevention technology, we propose the principle of fire prevention of reducing air leakage andreducing oxygen content in goaf, the measures and technologies for fire prevention during the finish period are built, whichincludes laying air duct cloth on the roof, building loess isolation wall, grouting high polymer materials, nitrogen injection andother ways. The practice proved that the technologies and measures could effectively ensure the safety mining of 12205 workingface of Selian No.2 Coal Mine.
出处
《煤矿安全》
北大核心
2017年第4期75-78,共4页
Safety in Coal Mines
基金
中国博士后科学基金特别资助项目(2015T81043)
中国博士后科学基金资助项目(2016M592820)
陕西省基础研究计划资助项目(2016JM5022)
关键词
煤自燃
防火
风筒布
高分子材料
注氮
coal spontaneous combustion
fire prevention
air duct cloth
high polymer material
nitrogen injection
