| 论切缝药包爆破的剪应力作用 |
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| 引用本文： | 李显寅,蒲传金,肖定军. 论切缝药包爆破的剪应力作用[J]. 爆破, 2009, 26(1) |
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| 作者姓名： | 李显寅 蒲传金 肖定军 |
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| 作者单位： | 西南科技大学环境学院,绵阳,621002;西南科技大学环境学院,绵阳,621002;西南科技大学环境学院,绵阳,621002 |
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| 摘 要： | 通过岩石试件的冲击损伤实验,分析了在剪应力作用下,岩石具有的断裂破坏特性.进行的切缝药包爆破数值模拟结果表明,切缝药包爆破的切缝套管切缝处具有明显的剪应力作用,该剪应力将使爆破裂纹首先从切缝处形成,从而具有定向断裂成缝效果.
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| 关 键 词： | 切缝药包爆破 剪应力 冲击损伤 |
Discussion on Shear Stress of Cutting Seam Cartridge Blasting |
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| LI Xian-yin,PU Chuan-jin,XIAO Ding-jun. Discussion on Shear Stress of Cutting Seam Cartridge Blasting[J]. Blasting, 2009, 26(1) |
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| Authors: | LI Xian-yin PU Chuan-jin XIAO Ding-jun |
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| Affiliation: | College of Environmental Engineering;Southwest University of Scienceand Technology;Mianyang 621002;China |
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| Abstract: | In the paper,the fracture failure characteristic of rock was firstly studied by the impact damage of rock samples under shear stress,and then the cutting seam cartridge blasting was numerically simulated.The results showed that shear stress was obvious in the lancing of the cutting seam tube,which make the blasting crackle formed from the lancing at first,thus have the effect of directional fracture to seam. |
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| Keywords: | cutting seam cartridge blasting shear stress impact damage |
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