Numerical Simulation Study of Blasting Parameters Optimization in Rich Water Mine Area
In order to improve the water hole blasting effect in the water rich rock area of a certain open-pit mine,a study was conducted on rock debris filling materials through theoretical analysis and on-site experiments.The influence of radial water uncoupling charge coefficient,filling length,and delayed detonation on the blasting effect was analyzed through numerical simulation.The results show that as the particle size of rock debris increases,the shear strength of the filling structure also increases,and the effect of filling is also enhanced;The filling effect is most significant when the ratio of＜5 mm with ≥5 mm rock debris particles is 3:7 in the filling structure;When the radial water uncoupled charge coefficient Kd is 1.33,perfect blasting effects can be achieved to save explosive costs;Delayed detonation can provide more free surfaces to reduce the fragmentation of rock masses.
deep hole bench blastinghole stemmingwater uncoupled chargeoptimization of blasting parametersnumerical simulation
万方数据
维普
