| 饱和砂岩在温度和频率域的衰减和速度频散 |
| |
| 引用本文： | 席军,宛新林,周城光,杜赟,席道瑛.饱和砂岩在温度和频率域的衰减和速度频散[J].地震学报,2013,35(6):914-922. |
| |
| 作者姓名： | 席军 宛新林 周城光 杜赟 席道瑛 |
| |
| 作者单位： | 1.中国北京 102617 北京石油化工学院机械工程学院 |
| |
| 基金项目： | 国家自然科学基金项目(40874093)资助 |
| |
| 摘 要： | 利用Metravib热机械分析仪， 在天然地震的频率和温度范围内， 首次对泵油和甘油饱和两种孔隙度的彭山砂岩的衰减和速度频散进行了实验研究． 结果表明， ① 泵油饱和彭山砂岩对频率和温度的依赖呈热激活弛豫规律； ② 杨氏模量和弹性波速度与孔隙度、 温度呈负相关， 与饱和液体的黏滞系数、 频率呈正相关; ③ 频散效应因频率上升而增强， 因温度增高而减弱． 这一规律性的结果为地震波理论研究提供了实验基础．
|
| 关 键 词： | 饱和砂岩 衰减 模量 速度频散 |
| 收稿时间： | 2012-06-22 |
Attenuation and dispersion of saturated rocks in temperature and frequency domains |
| |
| Xi Jun;Wan Xinlin;Zhou Chengguang;Du Yun;Xi Daoying.Attenuation and dispersion of saturated rocks in temperature and frequency domains[J].Acta Seismologica Sinica,2013,35(6):914-922. |
| |
| Authors: | Xi Jun;Wan Xinlin;Zhou Chengguang;Du Yun;Xi Daoying |
| |
| Institution: | 1.School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China2.The Civil Engineering School, Anhui University of Architecture, Hefei 230601, China3.Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China4.4) Mengcheng National Geophysical Observatory, School of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China |
| |
| Abstract: | Experiments are performed by Metravib dynamic mechanical analyzer about the attenuation and dispersion of pump-oil and glycerol saturated Peng-shan sandstones with two kinds of porosities. The frequency and temperature of tests are natural earthquake. The results show: ① The attenuation peak of pump-oil saturated Pengshan sandstone appears to be thermo-activated relaxation. ② Young’s modulus and elastic wave velocity of saturated Pengshan sandstones reduce with porosity and temperature increasing, and rise with viscosity coefficient of saturated liquid and frequency increasing. ③ Frequency dispersion attenuates as temperature increases, enhances as frequency rises. The data provides the experiment foundation for theoretical research of seismic waves. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地震学报》浏览原始摘要信息 |
| 点击此处可从《地震学报》下载免费的PDF全文 |
|
