Abstract: In the long-hole blasting practice in open-pit mines, the judgment of rock blastability is an important basis for choosing the technical parameters of blasting. The accuracy of such judgment finally decides the conformity of the actual blasting effect to the predicted effect. The factors influencing the rock blastability were determined and analyzed and an effective method was established for qualitative description of rock blastability. On this basis, a mathematical model for rock blastability classification was built and applied in Ben Steel's Weitoushan Iron Mine.

Key words: Open-pit mine, Rock blastability classification, Weighted clustering analysis method, Mathematical model