| 强冲击载荷下岩石损伤特性实验研究 |
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| 引用本文： | 杨军,高文学,金乾坤.强冲击载荷下岩石损伤特性实验研究[J].北京理工大学学报(英文版),2000,9(3):243-248. |
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| 作者姓名： | 杨军 高文学 金乾坤 |
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| 作者单位： | 北京理工大学机电工程学院!北京100081 |
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| 摘 要： | 通过在一级轻气炮驱动的平板碰撞实验台进行冲击损伤实验 ,对软回收样品进行超声波测试 ,研究了强冲击载荷下两种典型岩石损伤特性 .结果表明 ,岩石的动态损伤与冲击速度和超声波衰减系数α有关 ,后者较好地反映了岩石的损伤程度 ,可作为构造岩石损伤模型的主要参量
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| 关 键 词： | 岩石 冲击载荷 损伤演化 衰减系数 |
Experimental Study on Damage Properties of Rocks Under Dynamic Loading |
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| YANG Jun,GAO Wen-xue and JIN Qian-kun.Experimental Study on Damage Properties of Rocks Under Dynamic Loading[J].Journal of Beijing Institute of Technology,2000,9(3):243-248. |
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| Authors: | YANG Jun GAO Wen-xue and JIN Qian-kun |
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| Affiliation: | School of Mechano Electronics Engineering, Beijing Institute of Technology, Beijing 100081;School of Mechano Electronics Engineering, Beijing Institute of Technology, Beijing 100081;School of Mechano Electronics Engineering, Beijing Institute of Technology, Beijing 100081 |
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| Abstract: | The damage properties of two types of rocks under dynamic loading are studied. The shock induced experiments are done using planar impact technique on the one-stage light gas gun, and the ultrasonic tests on the damaged rocks have been made by use of the ultrasonic pulse-transmission method. The shock induced damage of rock is related to the shock speed and the attenuation coefficient of sonic wave, and the latter reflects the damage degree in rock fairly well. The attenuation coefficient α can be used as main damage parameter for constructing damage model of rock under dynamic loading. |
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| Keywords: | rock dynamic loading damage evolution attenuation coefficient |
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