Numerical Simulation And Applications Of Linear Charge Blasting

Linear charge has widely used in many engineering blasting, has become the mainway of large-scale blasting. On the basis of extensive reading literatures published inhome and abroad, expounds the principle of linear charge blasting, the rock breakingmechanism, blasting theory, numerical simulation of basic LS-DYNA.In concentrated charge and linear charge definition doesn’t have a unified standard.It is mostly experience value. This research through to concentrated the medical pouchand the linearity medical pouch’s limits question. It uses the LS-DYNA numericalsimulation obtains one to be possible to supply the reference the conclusion. It obtains theformula between concentrated charge and strip-shaped charge.The length of two linear charges spacing also do not have a true standard, but it’salso the empirical value mostly. But I through this research, I use LS-DYNA numericalsimulation, and it obtained the best medical pouch spacing that at the same time the twolinear charges are at center point detonation.In Bench blasting, the deep hole blasting also belongs to linear charge. In this study,the application of LS-DYNA on deep-hole bench blasting was simulated, based on theselected points of the effective stress analysis of deep hole bench blasting optimalstemming length.The conclusion basically accord with the empirical value which is applies in theproject demolition. Confirmed some experience value is correct, and the result is moreaccurate than the experience value. In the later application linearity medical pouchdemolishes in project, these can obtain the better blasting effect.