Abstract：Rock damage from blasting should be minimized as possible. In order to reduce the blasting damage to the surrounding rock mass，it is urgent to find the law on blasting damage to the rock affected by blasting parameters through model experiments. Based on this point，the experimental technique and measurement method are proposed and the results from the experiment under various perimeter-blasting parameters are analyzed. The law on the distribution of damage factor affected by perimeter blasting parameters is discovered，including decoupling coefficient，burden，firing time interval，and blast hole stemming and etc.. The findings in the experimental study are significant for blasting practice in engineering，parameter optimization and in-depth study of contour blasting theory.
