Abstract：It is difficult to study particle crushing of rock using the existing classical theory because of the complex and irregular physical structure, but it is changed by fractal theory, which employed statistical concepts to explain the particle crushing strength. In this paper, the stress - strain distribution curve and the crushed particle size distributions is described based on a large number of single marble particle crushing test. Three types of particle crushing damage are summarized, fractal model of rock particles crushing is established by the distribution characteristics of the damaged particles, fractal dimension D of 2.48 is got. According to the fractal model, the theoretical formula of particle crushing strength is derived, the test data of marble particle crushing strength with the theoretical prediction equations are compared, the results are very consistent, and therefore, fractal theory is applicable for analysis of particle crushing strength.
2015, Vol. 36 
