| 基于声速定义的灰岩冲击损伤参数的计算范围 |
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| 引用本文： | 胡刚,高新明.基于声速定义的灰岩冲击损伤参数的计算范围[J].黑龙江科技学院学报,2005,15(5):291-294. |
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| 作者姓名： | 胡刚 高新明 |
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| 作者单位： | 1. 黑龙江科技学院,科技处,哈尔滨,150027
2. 黑龙江科技学院,资源与环境工程学院,哈尔滨,150027 |
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| 摘 要： | 利用一级轻气炮对灰岩进行冲击损伤实验,并对回收样品进行了超声波测试,在此基础上建立了衰减系数和损伤变量、冲击损伤耗散能的拟合关系式.将岩石高速冲击损伤实验所获得的损伤参数D=0.40作为破碎区的边界,对现场爆破漏斗实验进行了数值模拟,证明应用D=0.40作为破碎区边界完全可行.
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| 关 键 词： | 冲击损伤 超声波测试 损伤系数 数值模拟 |
| 文章编号： | 1671-0118（2005）05-0291-04 |
| 收稿时间： | 2005-09-21 |
| 修稿时间： | 2005-09-21 |
Calculation range of damage parameter of limestone by definition of sound wave |
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| HU Gang,GAO Xinming.Calculation range of damage parameter of limestone by definition of sound wave[J].Journal of Heilongjiang Institute of Science and Technology,2005,15(5):291-294. |
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| Authors: | HU Gang GAO Xinming |
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| Institution: | 1.Deans of Science and Technology, Heilongiiang Institute of Science and Technology, Harbin 150027, China; 2.Institute of Resoure and Environment Engineering, Heilongiiang Institute of Science and Technology, Harbin 150027, China |
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| Abstract: | The dynamic damage properties of limestone are systematically studied through the one-stage light-gas(planar impact technique) and ultrasonic pulse-transmission method. The sound wave of the retrieved rock sample is measured and tested with the technique of ultrasonic wave measurement and test, the relation between attenuation coefficient and damage energy dissipation of the sample is established. Theoretical study and experiments show that in calculation, for the damage definition in this paper, damage parameter D=0.40 can be used to define the edge of fragmentation field of limestone. The experimental blast funnel is simulated with numerical method and the result shows that D=0.40 is feasible to be used to define the edge of fragmentation field. |
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| Keywords: | dynamic damage ultrasonic wave measurement damage parameter numerical simulation |
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