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| SIMULATION OF HOLE WALL PRESSURE STRESS OF DEEP HOLE HYDRAULIC BLASTING |
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Received:July 24, 2014
Revised:July 29, 2014
Accepted:July 30, 2014
Published Online:October 29, 2015
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| DOI： |
| KeyWord:deep hole hydraulic blasting, hole wall pressure , numericalsimulation |
| Author | Institution |
| MA Chun -hua |
Yunnan tianyu blasting technology co.,LTD,Yunnan Kunming |
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| Abstract: |
| ABSTRACT:In engineering blasting，the rock crushing zone around the hole is shattered excessively by most of the explosive energy.The paper analysised the hole wall pressure of deep hole hydraulic blasting through the numerical simulation.Simulation results show that deep hole hydraulic blasting can reduce the peak pressure of hole wall and quasi static pressure and largely avoid or reduce the blasting shatter zone exists,thus,it can obviously increase the explosive energy utilization. |
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