| 单孔单侧护壁爆破模型试验与数值模拟 |
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| 引用本文： | 肖定军,郭学彬,蒲传金,刘一伟,代仁平.单孔单侧护壁爆破模型试验与数值模拟[J].爆破,2008,25(3). |
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| 作者姓名： | 肖定军 郭学彬 蒲传金 刘一伟 代仁平 |
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| 作者单位： | 西南科技大学环境与资源学院,四川,绵阳,621010;西南科技大学环境与资源学院,四川,绵阳,621010;西南科技大学环境与资源学院,四川,绵阳,621010;西南科技大学环境与资源学院,四川,绵阳,621010;西南科技大学环境与资源学院,四川,绵阳,621010 |
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| 基金项目： | 四川省绵阳市科技局资助项目 |
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| 摘 要： | 对单孔单侧护壁爆破进行了砂浆模型试验,并对护壁面和临空面进行了动态应变测试,测试结果显示护壁面的应变峰值较临空面降低了44%;运用LS-DYNA3D有限元软件对该试验进行三维数值模拟,分析了炮孔周围介质的有效应力场、压力场、速度场及质点位移的发展和分布.结果表明:护壁面方向的压力、速度、位移的峰值分别较临空面方向降低了46%、43%、40%,并发生了不同程度的滞后,数值模拟结果与模型试验结果有很好的一致性.
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| 关 键 词： | 护壁爆破 数值模拟 护壁面方向 临空面方向 |
Model Test and Numerical Simulation for Single Hole-unilateral Protecting Borehole Wall Blasting |
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| XIAO Ding-jun,GUO Xue-bin,PU Chuan-jin,LIU Yi-wei,DAI Ren-ping.Model Test and Numerical Simulation for Single Hole-unilateral Protecting Borehole Wall Blasting[J].Blasting,2008,25(3). |
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| Authors: | XIAO Ding-jun GUO Xue-bin PU Chuan-jin LIU Yi-wei DAI Ren-ping |
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| Affiliation: | XIAO Ding-jun,GUO Xue-bin,PU Chuan-jin,LIU Yi-wei,DAI Ren-ping(College of Environment , Resources,Southwest University of Science ,Technology,Mianyang 621010,China) |
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| Abstract: | To study single hole-unilateral protecting borehole wall blasting,cement mortar model tests were carried out.Protecting borehole wall and free-face wall were tested of dynamic strain,the test results show that the peak of strain were reduced 44% on protecting borehole wall than on free-face wall.Three-dimensional numerical simulation of tests were made by using LS-DYNA3D.Development and distribution of effective stress,pressure,velocity near the hole were investigated.The present results indicate that the p... |
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| Keywords: | protecting borehole wall blasting numerical simulation direction of protecting borehole wall direction of free-face |
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