research on the hard-rock breaking mechanism of hydraulic drilling impact tunneling
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ID: 239629
2015
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Abstract
In order to realize the rapid hard-rock tunneling in a safe, highly effective, and economic manner, the hydraulic drilling impact hard-rock tunneling (HDIHT) technology and method were introduced based on the theories of rock mechanics and hydraulic impact. The key parameters, including drilling radius and impact distance, were researched to reveal the stress behavior during HDIHT process. The Von Mises equivalent stress and its principal stress components were analyzed, and the breaking mechanism of HDIHT was also discussed. The simulation results show that, to ensure the effectiveness of “secondary breaking” caused by drilling hole free surfaces, the impact distance should not exceed 200 mm, and the optimal drilling radius was about 35 mm.
| Reference Key |
long2015mathematicalresearch
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|---|---|
| Authors | ;Risheng Long;Shaoni Sun;Zisheng Lian |
| Journal | journal of power sources |
| Year | 2015 |
| DOI |
10.1155/2015/153648
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| URL | |
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