| 侧向应力扰动对断层摩擦影响的实验研究 |
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| 引用本文： | 崔永权,马胜利,刘力强.侧向应力扰动对断层摩擦影响的实验研究[J].地震地质,2005,27(4):645-652. |
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| 作者姓名： | 崔永权 马胜利 刘力强 |
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| 作者单位： | 中国地震局地质研究所,地震动力学国家重点实验室,北京,100029;中国地震局地质研究所,地震动力学国家重点实验室,北京,100029;中国地震局地质研究所,地震动力学国家重点实验室,北京,100029 |
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| 摘 要： | 利用双向伺服控制装置,对含有与最大主压应力σ1呈45°夹角的预切面的花岗闪长岩标本进行了摩擦实验,结果表明,在σ1方向位移速率恒定、侧向应力σ2恒定的条件下,粘滑间隔随滑动面上正应力的增加而增加,粘滑应力降也随滑动面上正应力的增加而呈线性增加。但当σ2叠加了高频小振幅的正弦波扰动时,这种相关性发生了明显的变化,应力降大小和粘滑间隔的离散度均显著提高,特别是应力降可能会大幅度增加。与σ1扰动的实验结果相比,σ2扰动对断层粘滑的影响更为显著,这主要归因于正应力变化使滑动面的非均匀性加剧
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| 关 键 词： | 摩擦实验 应力扰动 粘滑间隔 应力降 |
| 文章编号： | 0253-4967（2005）04-0645-08 |
| 收稿时间： | 2005-09-16 |
| 修稿时间： | 2005-11-16 |
EFFECT OF LATERAL STRESS PERTURBATION ON FRICTIONAL BEHAVIOR: AN EXPERIMENTAL STUDY |
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| CUI Yong-quan,MA Sheng-li,LIU Li-qiang.EFFECT OF LATERAL STRESS PERTURBATION ON FRICTIONAL BEHAVIOR: AN EXPERIMENTAL STUDY[J].Seismology and Geology,2005,27(4):645-652. |
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| Authors: | CUI Yong-quan MA Sheng-li LIU Li-qiang |
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| Abstract: | The crustal movement shows obviously non-linear characteristics in time and space, and the tectonic deformation and related phenomena are undoubtedly affected by such non-linear mechanical process. Experimental study on frictional behavior under non-linear loading is helpful for understanding the effect of stress change on earthquake mechanism. In this paper, the frictional experiments on medium-scale granodiorite samples containing 45° precut surface have been conducted by using a servo-controlled biaxial |
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| Keywords: | Frictional experiment Stress perturbation Stick slip Stress drop |
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