Study on Muck Pile Shape of Open-Pit Bench Blasting Based on PFC

To study the influence of different resistance lines and rows delay intervals on shape muck pile throwing distance open-pit bench blasting based test, two-dimensional particle flow code (PFC2D) is used for numerical simulation. The experimental simulation data were compared analyzed, error value was acceptable. Meanwhile, row are to conduct analysis. results show that height change directly proportional line, rock inversely line change. best 1.75 m in actual working condition, according effect pile. By fitting relationship between pile’s height, it found nonlinear. simulating delays, optimal time difference model determined be 25 ms under similar conditions. It provides a guiding significance parameter design