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| Study on rock breaking volume of Underwater Explosion in Simulated Different Altitude Conditions |
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Received:December 25, 2012
Revised:December 31, 2012
Accepted:December 31, 2012
Published Online:March 24, 2014
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| DOI： |
| KeyWord:Underwater explosion;Smash effect;Rock distribution |
| Author | Institution |
| HUANG Lin |
Beijing General Research Institute of Mining Metallurgy,Beijing |
| ZHANG Li |
School of Chemical Engineering,Anhui University of Science and Technology,Huainan Anhui |
| zhujing |
The Management Committee of Anhui Huainan Contemporary Coal Chemical Industrial Park |
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| Abstract: |
| The air pressure of water surface decreases linearly with the altitude increasing for underwater explosion engineering in the different altitude area, it has very important significance for the charge quantity and rock fragmentation whether rock breaking volume changes or not after the charge explosion. Blasting test for cement mortar block is carried out by using No.8 detonator as blasting source in underwater condition which is simulated by explosion vessel. The research show that the rock-breaking effect keep unchanging when the air pressure decreases gradually in the range of 0-4500m, In a set of large , medium and small block size distribution, the ratio of medium size keep 55% to 70%,the large and small size all under the ratio 30%。 |
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