| 单轴压缩下花岗岩电荷变化的实验研究 |
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| 引用本文： | 赵扬锋,潘一山,苏维嘉.单轴压缩下花岗岩电荷变化的实验研究[J].辽宁工程技术大学学报(自然科学版),2009,28(2). |
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| 作者姓名： | 赵扬锋 潘一山 苏维嘉 |
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| 作者单位： | 1. 辽宁工程技术大学力学与工程学院,辽宁,阜新,123000
2. 辽宁工程技术大学机械工程学院,辽宁,阜新,123000 |
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| 基金项目： | 国家自然科学基金重大项目，国家自然科学基金，辽宁工程技术大学优秀青年科学研究基金 |
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| 摘 要： | 利用自主研制的电荷感应仪对花岗岩样品在单轴压缩变形破裂过程中产生的电荷感应信号进行了实验研究.结果表明,在岩石变形破裂达到峰值强度时比在峰值强度前有更强的电荷感应信号产生,电荷感应信号也受岩石应力的变化速率影响,在应力变化速率大时,有较强的电荷感应信号.在有变形破裂时,电荷感应信号就较强,变形破裂较小的面所对应的测点的电荷感应信号就较小,这表明电荷的产生和岩石的破裂有很大的关系.产生的电荷随着时间衰减.如果应力变化速率大,岩石变形破裂时产生的电荷在短时间内衰减很小,同时又有大量的自由电荷产生,所以在岩石变形破裂时,应力变化速率大时,有较强的电荷感应信号.
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| 关 键 词： | 单轴压缩 电荷 岩石破裂 |
Study on charge change of granite samples under uniaxial compression |
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| ZHAO Yangfeng,PAN Yishan,SU Weijia.Study on charge change of granite samples under uniaxial compression[J].Journal of Liaoning Technical University (Natural Science Edition),2009,28(2). |
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| Authors: | ZHAO Yangfeng PAN Yishan SU Weijia |
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| Institution: | 1.College of Mechanics and Engineering;Liaoning Technical University;Fuxin 123000;China;2.College of Mechanical Engineering;China |
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| Abstract: | With the self-designed charge induction instrument,the charge induction signal of the granite samples in deformation and fracture process is experimently studied under uniaxial compression.The result show:the charge induction signal of the rock in the peak strength is stronger than that before the peak strength.The charge induction signal is influenced by the stress rate of the rock.The charge induction signal is stronger when the stress rate of the rock is bigger.The charge induction signal is stronger dur... |
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| Keywords: | uniaxial compression charge rock fracture |
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