Study on Numerical Simulation of Geometric Elements of Blasting Funnel Based on PFC5.0

Based on the particle flow code (PFC2D) within discrete element method (DEM), rock mass model was established according to site conditions and blasting simulated by explosive expansion method. The influence of various parameters (the peak pressure action coefficient borehole wall, buried depth, charge mode) in effect investigated. Furthermore, relationship between geometry size crater obtained. By comparing field test numerical simulation example, reliability using PFC is verified. result shows that this paper provides a reliable new for can be used guide blasting.