ABSTRACT
Coal itself is a kind of fractal body. The distribution of its structure of pores is self-similar in statistics. Hence, investigation between the oxygen-absorbing property of coal and its fractal dimension of pores structure can help to recognize the difference of coal susceptible or not to spontaneous combustion more profoundly. The distribution parameters of pores in coal with different propensities of spontaneous combustion are measured by mercury intrusion method. The fractal properties of volume and surface area and their relationship are analyzed. Through experiments the oxygen-adsorbing quantities are obtained of the above different coals under low temperature. The relations are discussed between the fractal dimensions and the oxygen-adsorbing quantities. The research is much significant for further study on the characteristics of coal oxidation under low temperature.
