| 大理岩声发射Kaiser效应法测量原岩应力试验研究 |
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| 引用本文： | 赵奎,余彬,李期森,朱志成,邝泽良.大理岩声发射Kaiser效应法测量原岩应力试验研究[J].有色金属科学与工程,2017,8(3):88-93. |
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| 作者姓名： | 赵奎 余彬 李期森 朱志成 邝泽良 |
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| 作者单位： | 1.江西理工大学资源与环境工程学院，江西 赣州 341000 |
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| 基金项目： | 国家自然科学基金资助项目51664018江西省科技计划项目20143ACG70010江西理工大学研究生创新专项资金项目XS201542 |
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| 摘 要： | 为研究声发射Kaiser效应法测量原岩应力，进行了现场套孔应力解除试验，得到了试件加载方向的实测应力值，对大理岩进行单轴压缩条件下的2次加载声发射试验并确定Kaiser点.试验结果表明:通过声发射Kaiser效应法测得的地应力与通过套孔应力解除法测得的原岩应力误差小于10 %，原岩应力位于20 %~26 %的峰值强度之间，即岩石压密阶段后期或弹性阶段初期.研究结果可为提高判读Kaiser点的精度和岩石工程实际提供依据.
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| 关 键 词： | 声发射 Kaiser效应 原岩应力 套孔应力解除法 单轴压缩 |
| 收稿时间： | 2016-11-26 |
Experimental study on in-situ stress measurement from marble using acoustic emission method |
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| Affiliation: | 1.School of Resources and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China2.Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China3.Jiangxi Ionic Rare Earth Engineering Research Company Limited, Ganzhou 341000, China |
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| Abstract: | On-site stress relief tests were performed to measure the in-situ stress by the technology of acoustic emission Kaiser effect. The measured stress value of the specimen loading direction was obtained. The acoustic emission test with secondary loading on the marble under the condition of uniaxial compression determines the Kaiser point. The experimental results show that the deviation between the geostress measured by acoustic emission Kaiser effect method and the raw rock stress measured by Sleeve stress relief method is lower than 10 %. The stress of the original rock is between 20 % and 26 % of the peak intensity, ie, the later stage of the rock compression stage or the initial stage of the elastic phase. The results provide favorable basis for improving the accuracy of the interpretation of Kaiser points and the actual engineering of rock engineering |
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