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| 冲击载荷作用下岩石破碎数值模拟及试验研究 | |
| 引用本文： | 谢世勇,王艳霞,赵伏军. 冲击载荷作用下岩石破碎数值模拟及试验研究[J]. 中国钨业, 2007, 22(5): 5-9 |
| 作者姓名： | 谢世勇 王艳霞 赵伏军 |
| 作者单位： | 1. 赣州有色冶金研究所,江西,赣州,341000 2. 河北工业大学,电气与自动化学院,天津,300130 3. 湖南科技大学,能源与安全工程学院,湖南,湘潭,411201 |
| 摘 要： | 运用数值模拟方法研究了冲击载荷作用下的岩石微观结构特性变化,通过对岩石内部应力分布及裂纹分布图可以得出冲击载荷破岩时岩石内部在垂直方向产生一个拉应力区和一个压应力区,刀具下方的拉应力最大;中间裂纹扩展速度比径向和侧向裂纹都要快,裂纹面呈三角形状。在多功能试验装置上对花岗岩进行冲击载荷破岩试验,试验结果表明:单纯提高冲击载荷对破岩效果不会有很大的提高,存在一个最佳破岩冲击能(63J)。 |
| 关 键 词： | 冲击载荷 岩石破碎 数值模拟 试验研究 |
| 文章编号： | 1009-0622（2007）05-0005-05 |
| 修稿时间： | 2007-08-21 |
Numerical Simulation and Experimental Research on Rock Fragmentation Under Impact Loading |
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| XIE Shi-yong,WANG Yan-xia,ZHAO Fu-jun. Numerical Simulation and Experimental Research on Rock Fragmentation Under Impact Loading[J]. China Tungsten Industry, 2007, 22(5): 5-9 | |
| Authors: | XIE Shi-yong WANG Yan-xia ZHAO Fu-jun |
| Affiliation: | 1.Ganzhou Nonferrous Metallurgy Research Institute, Ganzhou 341000, Jiangxi, China; 2. School of Electrical and Automation Engineering, Hebei University of Technology, 300130,China; School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China |
| Abstract: | The microstructure characteristics changes in the rock are studied by applying numerical simulation method.There exist a tensile stress area and a compressive stress area in the vertical direction.The middle crack spreads faster than the radial and lateral crack.The crack form is a triangle shape through internal stress distribution and crack distribution map.The granite fragmentation experiments under impact loading show that rock fracture effect can not be drastically enhanced by merely increase impact loading.There exists optimal impact energy(63 J) for rock fracture. |
| Keywords: | impact loading rock fragmentation numerical simulation experimental research |
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