| 断裂控制爆破中裂面控制的断裂力学分析 |
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| 引用本文： | 阳友奎.断裂控制爆破中裂面控制的断裂力学分析[J].重庆大学学报(自然科学版),1991,14(6):91-96. |
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| 作者姓名： | 阳友奎 |
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| 作者单位： | 重庆大学资源及环境工程系 博士研究生 |
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| 摘 要： | 介绍了一种定向方法。通过对断裂过程中动力学分析,建立了动的开裂判据和计算方法,并讨论了裂纹扩展中分义的可能性以及孔内初始压力(p_a)和孔几何参数对最终裂纹长度的影响。
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| 关 键 词： | 断裂控制爆破 断裂面控制 断裂力学 |
A FRACTURE MECHANICS ANALYSIS OF FRACTURE PLANE CONTROL IN FRACTURE CONTROL BLASTING |
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| Yang,Youkui.A FRACTURE MECHANICS ANALYSIS OF FRACTURE PLANE CONTROL IN FRACTURE CONTROL BLASTING[J].Journal of Chongqing University(Natural Science Edition),1991,14(6):91-96. |
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| Authors: | Yang Youkui |
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| Abstract: | A procedure of fracture control blasting for achieving directional breaking of
rocks by blasting is presented. The criterion for initiating of radial cracks in borehole wall under dynamic load and the method for determining the permissible rang of initial gas pressure (p0) in the charge cavity are developed .and the branching of radial cracks and the effeets of the pressure (p0) and blasthole geometry (R0.a.L3) on final dimensions of directed cracks are studied .with Fracture Mechanics analysis in all three aspects of fracture process including crack initiation .crack propagation and crack arrest. |
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| Keywords: | fraecture control blasting fracture plane control fracture mechanics |
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