快速施工在浅埋易自燃煤层的应用

Application of Rapid Construction in Shallow-buried and Spontaneous Combustion Coal Seams

通过理论分析和数值模拟,从快速掘进、快速开采、快速搬家三个技术方面分析了快速施工应用于浅埋自燃煤层时的防灭火作用。研究表明:采用快速掘进并快速支护,可以有效地减少巷道掘进头处发火的次数、降低其发火概率;采用快速开采能够减少工作面的来压次数,缩短"散热带"发火期;采用快速搬家技术后,可以快速封闭采空区,降低发火概率。这些工艺满足现代化矿井中高效、安全的生产要求。

With theoretical analysis and numerical simulation, the fire prevention effects of rapid construction on shallow-buried and spontaneous combustion coal seams are analyzed in terms of rapid excavation, rapid mining, and rapid moving. The results show that the rapid excavation and supporting could effectively reduce the frequency and probability of firing at the endpoints of the roadways. The rapid mining could reduce weighting frequency of the working face and firing time of radiator strip. In addition,the rapid moving could quickly seal goaf and reduce the firing probability. The techniques could meet the requirements of efficient and safe production in modern mines.