Calculation Model and Decoupling Coefficient Sensitivity Study of Periphery Hole for Eccentric Decoupled Charge in Highway Tunnels

Figure 1

Calculation diagram of eccentric decouple charge, where is the geometrical center of the hole, is the geometrical center of the stick dynamite, is the radius of blast-hole, is the straight-line distance from the center of the stick dynamite to the wall of blast-hole, and is the radius of stick dynamite.