| 高温下盐岩的声发射特性试验研究 |
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| 引用本文： | 吴刚,翟松韬,孙红,张渊. 高温下盐岩的声发射特性试验研究[J]. 岩石力学与工程学报, 2014, 33(6): 1203-1211 |
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| 作者姓名： | 吴刚 翟松韬 孙红 张渊 |
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| 作者单位： | (1. 上海交通大学 海洋水下工程科学研究院，上海 200231；2. 中国矿业大学 深部岩土力学与地下工程国家重点实验室，江苏 徐州 221008；3. 上海交通大学 土木工程系，上海 200240；4. 淮阴工学院 建筑工程学院，江苏 淮安 223001) |
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| 基金项目： | 国家自然科学基金资助项目(40872180);中国矿业大学深部岩土力学与地下工程国家重点实验室开放基金项目(SKLGDUEK1004) |
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| 摘 要： | 利用MTS 810材料测试系统和AE21C声发射检测仪对受高温作用的喜马拉雅山盐岩在加温及加载过程中声发射的演变过程进行试验研究，分析其在20 ℃～600 ℃高温下以及高温后不同受力阶段的声发射特征。研究结果表明：加温过程中，50 ℃～400 ℃盐岩的声发射率较50 ℃时明显下降，超过400 ℃后随温度的升高盐岩的声发射活动越频繁。单轴压缩过程中，20 ℃～150 ℃时盐岩的声发射活动频率及强度随温度升高而增大，而在170 ℃～600 ℃其声发射率随温度升高而降低。170 ℃～400 ℃是盐岩自愈性得到充分体现的温度区间。在相同温度下，高温下盐岩的声发射活动弱于高温后。
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| 关 键 词： | 岩石力学高温作用盐岩声发射 |
| 收稿时间： | 2013-07-02 |
EXPERIMENTAL STUDY OF ACOUSTIC EMISSION OF SALT ROCK UNDER HIGH TEMPERATURE |
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| WU Gang,ZHAI Songtao,SUN Hong,ZHANG Yuan. EXPERIMENTAL STUDY OF ACOUSTIC EMISSION OF SALT ROCK UNDER HIGH TEMPERATURE[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(6): 1203-1211 |
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| Authors: | WU Gang ZHAI Songtao SUN Hong ZHANG Yuan |
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| Affiliation: | (1. Chinese Underwater Technology Iinstitute，Shanghai Jiaotong University，Shanghai 200231，China；2. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Xuzhou，Jiangsu 221008，China；3. Department of Civil Engineering，Shanghai Jiaotong University，Shanghai 200240，China；4. Faculty of Architecture and Civil Engineering，Huaiyin Institute of Technology，Huai?an，Jiangsu 223001，China) |
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| Abstract: | The process of acoustic emission(AE) of Himalayan salt rock under high temperature and uniaxial loading conditions was investigated using the material test system MTS 810 and the acoustic emission detector AE21C. The characteristics of AE of salt rock at temperatures between 20 ℃ and 600 ℃ and at different loading stages after the high temperature were analyzed. The rate of AE of the salt rock when the temperature was between 50 ℃–400 ℃ was lower than that at 50 ℃；while the AE activity of salt rock in heating process became more frequently with the temperature rising if temperature was over 400 ℃. In the loading process，the frequency and the intensity of AE of the salt rock were increased with the rise of temperature when the temperatures were between 20 ℃–150 ℃，and the rate of AE of the salt rock was reduced with increasing temperature between 170 ℃–600 ℃. The temperature range of self-healing for salt rock is 170 ℃–400 ℃. The activity of AE of salt rock at high temperature is weaker than that after the high temperature though the temperature degree is the same. |
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| Keywords: | rock mechanics high temperature function salt rock acoustic emission |
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