论文部分内容阅读
本文定义了煤自燃所需必要条件的极限值 ,根据煤自身氧化放热性能及其所处的蓄热环境 ,应用热平衡法推导出引起煤自燃的最小浮煤厚度、最低氧浓度、最大漏风强度、上限平均粒径等极限参数的计算方法。提出只有同时满足浮煤厚度大于极限最小厚度 ,氧浓度大于下限氧浓度 ,漏风强度小于上限漏风强度 ,平均粒径小于上限平均粒径的区域 ,才是煤层自燃的危险区域 ,为煤自燃预测防治提供了量化的理论依据
This paper defines the limits of the necessary conditions for spontaneous combustion of coal. According to its own oxidative exothermic properties and the thermal storage environment in which it is located, the minimum thickness of flotation coal, the minimum oxygen concentration and the maximum air leakage intensity , The upper limit of the average particle size and other limit parameters of the calculation method. It is proposed that coal spontaneous combustion can only be achieved if the thickness of the floating coal is greater than the minimum thickness, the oxygen concentration is greater than the lower limit of oxygen concentration, the air leakage strength is less than the upper limit of air leakage strength, and the average particle size is less than the upper limit of the average particle size. Provides a quantitative theoretical basis