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首页> 外文期刊>Shock and vibration >Calculation Model and Decoupling Coefficient Sensitivity Study of Periphery Hole for Eccentric Decoupled Charge in Highway Tunnels
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Calculation Model and Decoupling Coefficient Sensitivity Study of Periphery Hole for Eccentric Decoupled Charge in Highway Tunnels

机译:公路隧道偏心解耦装药周孔计算模型及解耦系数敏感性研究

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摘要

On the basis of the eccentric decoupled charge form on site and borehole concentric decoupled computational theory, the calculation model of eccentric decoupling charge would be established in the present study. The calculation model takes into account the influence factors such as damage to the surrounding rock, air, and water decoupled media. Besides, based on the proposed calculationmodel, blasting effect of a small-diameter EJ-102 emulsion explosive is calculated by using ANSYS LS-DYNA. The influence of decoupling coefficient, different rock grade, and different RQD value on blasting effect is obtained by sensitivity analysis of the simulated parameters. Then the calculated results are compared with the empirical results. The blasting parameters of fractured rock mass are also optimized by numerical simulation.
机译:基于现场偏心解耦装药形式和井眼同心解耦计算理论,将建立偏心解耦装药计算模型。计算模型考虑了影响因素,例如对周围岩石,空气和水分离介质的破坏。此外,在ANSYS LS-DYNA的基础上,基于提出的计算模型,计算了小口径EJ-102乳化炸药的爆炸效果。通过模拟参数的敏感性分析,获得了解耦系数,不同岩石等级和不同RQD值对爆破效果的影响。然后将计算结果与经验结果进行比较。还通过数值模拟优化了裂隙岩体的爆破参数。

著录项

  • 来源
    《Shock and vibration》 |2018年第5期|9734529.1-9734529.11|共11页
  • 作者

    Liu Junfeng; Wang Yuanqing;

  • 作者单位

    5th Engn Ltd, Engn Bur China Railway 11, Chongqing 400037, Peoples R China;

    Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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