Title: NUMERICAL ANALYSIS ON BLASTING EFFECTS IN CONCRETE PLANK
Abstract: The concrete plank is an object usually found in the demolition blasting. It is the basic piece of structure or building. Attenuation rule of the peak value of explosion stress wave vs. distances is one of the theoretical bases for designing engineering blasting parameters. Through numerical computation, attenuation rule on the peak value of explosion stress wave vs. distances in the concrete plank is studied in this paper. The study results show that the attenuation of explosion stress wave is more rapid in the concrete plank, compared with that in the infinite concrete medium. The attenuation exponent of the peak value of stress wave vs. distance decreases with increase of explosive charge mass. The change ratio of attenuation exponent decreases rapidly with increase of explosive charge. That can explain that big explosive charge mass cannot improve the breaking quality of concrete plank, which will produce strong air shock wave and flying pieces and that the bigger explosive consumption per cubic concrete should be taken, compared with blasting of concrete body, as can be seen from the results in the paper.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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Cited By Count: 1
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