Effect of Specimen Placement on Model Rock Blasting

Abstract Small-scale model blasting plays an important role in understanding mechanism of rock fragmentation by and improving blast technology mining engineering. Because a specimen (or model) often needs to be placed on either ground or another material blasting, additional interface appears between the material), compared with engineering that does not have such interface. In this paper, four blasts high-speed photography were presented. The results showed that: (1) as impedance was smaller than material, thrown up certain amount kinetic energy brought bounce. Thus, placement should avoided blasts. (2) As three blocks same type bounced during blasting. Correspondingly, no induced Therefore, is recommended for If very high specific charge must used above-recommended method will work well due possible breakage base case, can so bounce reduced. Accordingly, estimated stress wave analysis.