Numerical simulation and application of slope pre splitting blasting in Shenshan limestone mine
In order to improve the effect of controlled blasting for the slope of Shenshan chute platform,the article proposes a wide hole spacing and large aperture presplitting blasting method for controlled blasting for slope formation.In the design,the article selects eccentric charging structure,studies and optimizes various blasting parameters,and puts forward the blasting quality control measures.We use the numerical simulation technology to analyze the seam forming process of pre splitting holes.The results show that the pre-fracture of rock mass is penetrated at 425 μs,and the effect of joint formation is obvious,and there is no obvious over-excavation phenomenon.After the field blasting experiment,the slope wall surface is flat,there is no obvious over-excavation phenomenon,the semi-hole trace is clear,and the continuity is good,and the semi-hole rate reaches about 85%,reaching the predetermined goal.
pre splitting blastingnumerical simulationparameter designseam forming effectslope forming
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维普
