自燃倾向性鉴定方法的研究

his paper systematically summarizes and evaluates the methods for identifying tendency of spontaneous combustion used by major coal mining countries.It’s demonstrated to be unreasonable from the mechanism of coal spontaneous combustion, the essence of oxygen physisorption and the inhomogeneity of coal surface that the principle of the existing method for identifying tendency of spontaneous combustion of coal in our country. The index of existing method is demonstrated to be not scientific from the oxygen absorption quantity changing with the different granularity of coal sample and temperature.The operation of existing method is demonstrated to be not suitable from the test method and the management of instrument.The testing result based on existing method is demonstrated to be inconsistent between actual situation The change law is researched through the experiment of five coal samples from different mine.Finally, a new assumption is put forward for identifying tendency of spontaneous combustion,which has important guiding meaning to the revising and perfecting existing method in our courtry.