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| INFLUENCE OF AIR DECK CHARGING ON BLASTING EFFECT |
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| DOI： |
| KeyWord:Deck charging with air space Blasting effect Blasting control, |
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| Abstract: |
| Based on the research on intermediate pillars stoping of" Research on sublevel blasthole bench caving mining method used at Fankou Lead-Zinc Mine", the major scientific and technical project of the state" Seventh Five Year Plan", starting with improving blasting effect, enhancing the contro) of blasting action, and ensuring the stability of filled bodies on both sides. The determination of reasonable structure parameters and mechanism of blasting by using air deck charging, as one of the technical measures of blasting control, are analyzed and studied. It shows by model test and field application that the above-mentioned blasting method can change the shape of stress wave, lowering peak stress, prolonging the time of positive pressure action, increasing impulse density and energy density, therefore it is beneficial to improve blasting effect and enhance blasting control. |
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