煤最短自然发火期解算数学模型

Mathematic model for calculating the shortest coal spontaneous combustion time

为了更准确地预报煤层自然发火期 ,在总结前人对煤层最短自然发火期解算模型研究的基础上 ,分析了仍存在的一些问题 .根据煤与氧反应的热平衡方程导出了煤最短自然发火期解算模型及实验方法 ,提出了更符合实际情况的煤层最短自然发火期解算模型 .经两个试验工作面观测验证 ,预测准确率达到 74 %～ 90 % ,说明所建立的预测模型是正确的 。

In order to forecast coal spontaneous combustion time more accurately, based on formerly researches and the thermo balance equation of coal oxygen reaction, the calculating mathematic model of coal shortest spontaneous combustion time has been put forward, and a suit of experimental methods has been set up. It has been carried through that forecast coal spontaneous combustion time of two working faces. The forecast accuracy has reached 74%～90%. It is shown that the established forecast model is correct, and the forecast method has directing effect to the safe production of coal mine.