Research on the Attenuation Characteristics of Frequency Domain Parameters in Different Rock Medium

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-05-20 DOI:10.2113/2024/lithosphere_2024_113

Xiling Liu, Huini Liu, Feng Xiong, Qin Xie, Yuchen Zhong, Qi Hao

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Abstract

This study examines the frequency attenuation characteristics of elastic waves in marble, granite, and red sandstone through laboratory tests and numerical simulations based on ABAQUS software on eight rock samples. The correlation between the distance of the decay of the peak frequency and the petrophysical and mechanical parameters is also analyzed. The results show that elastic waves undergo stepwise attenuation of their peak frequency during laboratory attenuation tests. This finding was confirmed by numerical simulations. As elastic waves propagate through a rock medium, the amplitude of the high-frequency peak area near the excitation frequency decreases rapidly, while the proportion of low-frequency signals increases. As the propagation continues, the signal spectrum is dominated by low-frequency components, resulting in a stepwise attenuation of the peak frequency. It has been observed that the step decay distance of the peak frequency of elastic waves varies with the degree of particle bonding, which can be used to characterize the attenuation properties of elastic waves in a medium.

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不同岩石介质中频域参数的衰减特性研究

本研究通过对大理石、花岗岩和红砂岩进行实验室测试和基于 ABAQUS 软件对八个岩石样本进行数值模拟，研究了弹性波在大理石、花岗岩和红砂岩中的频率衰减特性。同时还分析了峰值频率衰减距离与岩石物理和力学参数之间的相关性。结果表明，在实验室衰减试验中，弹性波的峰值频率会逐步衰减。数值模拟证实了这一结论。当弹性波在岩石介质中传播时，激励频率附近的高频峰值区域的振幅迅速减小，而低频信号的比例则增加。随着传播的继续，信号频谱以低频成分为主，导致峰值频率逐步衰减。据观察，弹性波峰值频率的阶跃衰减距离随粒子结合程度的变化而变化，这可用于描述介质中弹性波的衰减特性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.