Study On The Influence Of Millisecond Delay Blasting On Underground Stope Blasting Effect

Underground mining stope blasting’s goal is under the condition of safe, as far aspossible to get the best crushing effect in the lowest economic cost, and get a largeproduction capacity. Millisecond blasting technique is one of the most popular technologyapplications in modern blasting engineering, can largely improve the blasting effect. Thisarticle have demonstrated that the millisecond blasting technology is applied to theproduction of underground stope blasting, can improve the blasting effect of undergroundstope, improve the work efficiency of the mine.First of all, base on the basic theory of rock blasting, this paper analysis the influenceof blasting gas and blasting stress wave in explosive blasting in rock blasting, studiesblasting’s damage to rock’s internal and external, simply expounds the process ofexplosive in rock blasting damage.Secondly,Then expounds from differential blasting network technology, analysis, andemphatically introduces the type differential blasting network, detonating tube areintroduced and the power differential detonating network advantages and disadvantagesand applicable scope, and the two types of network in the main construction technologyand construction safety research and analysis, thus in this paper, the network must sexualselection of blasting network.Finally, in the application of millisecond blasting technology in combination with MaLuping mine KaiLin, based on the rock blasting mechanism of rock fragmentation,analyses the four functions of millisecond blasting theory, respectively expoundsmillisecond blasting produced when new free surface, the stress wave superposition,enhance collision and seismic wave interference effects on millisecond blasting earthquake,cites the differential blasting between aperture, between the millisecond blasting timedetermine.ping mine blasting engineering as the example, emphatically analyzed thedifferential blasting in the application of upward incise and stope blasting, found that thedifferential blasting can fully release explosive energy, make full release of the free surface,conducive to subsequent cut and enlargement of tank, can improve the efficiency of extraction, increasing ore output, while reducing the cutting up the hill and the rate of thesecondary blasting mining blasting, optimized the mining stope blasting process, ensurethe safety of the mine production.