岩坡垫层滑动次声特性的物理模型试验研究

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2024-10-30 DOI:10.1016/j.apacoust.2024.110364

Qiao Chen , Dongming Jia , Yaobai Sun , Qingming Xie , Fenglin Xu , Rufu Zhou , Wei Peng , Jilong Chen , Jianrong Ma , Kang Yang

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引用次数: 0

摘要

滑坡研究的重点和难点始终是垫层岩滑坡的形成机理。由于监测成本高、预警时间短，大规模滑坡的防治难度很大，给准确预报带来了巨大挑战。近年来，次声监测在地质灾害领域得到了广泛应用。然而，岩石滑坡的次声特征仍不明确，阻碍了该技术的应用和推广。因此，本研究旨在通过物理模型试验分析垫层岩石滑坡的次声特征。研究通过对试验次声数据进行小波分解分析，总结了岩石滑坡崩塌各阶段的次声特征和能量分布，并分析了滑动过程与次声信号之间的相关性。结果表明(1) 在垫层岩石滑坡的均匀变形阶段、加速变形阶段、缓慢滑动阶段和快速滑动阶段都存在次声信号，但各阶段的能量分布不同，其中加速变形阶段和快速滑动阶段的次声事件最为明显。(2）在岩石滑坡的变形阶段，次声波的波形特征比滑动阶段更明显，均匀变形和缓慢滑动阶段的波形向右倾斜，而加速变形和快速滑动阶段的波形向左倾斜。(3) 各阶段的次声频率分布在 0.01 至 20.0 Hz 之间，其中均匀变形阶段和慢速滑动阶段的主频率主要分布在 0.01 至 10.0 Hz 之间，加速变形阶段和快速滑动阶段的主频率主要分布在 10.0 至 20.0 Hz 之间。该研究结果为岩石滑坡次声监测和预警技术的开发与应用提供了宝贵的启示。

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Physical model experimental study on the infrasound characteristics of bedding slide in rock slope

The main focus and challenge of landslide research is always the formation mechanism of bedding rock landslide. Preventing and controlling large-scale landslide is difficult due to high monitoring costs and short warning times, posing a significant challenge for accurate forecasting. In recent years, infrasound monitoring has been widely applied in the field of geological hazards. However, the infrasound characteristics of rock landslide remain unclear, hindering the application and promotion of this technology. Therefore, this study aimed to analyze the infrasound characteristics of bedding rock landslide through a physical model test. Through wavelet decomposition analysis of the experimental infrasound data, the study summarized the infrasound characteristics and energy distribution of rock landslide failure at various stages, as well as analyzed the correlation between the slide process and infrasound signals. The results showed that: (1) Infrasound signals are present in uniform deformation, accelerated deformation, slow sliding and rapid sliding stages of the bedding rock landslide, but the energy distribution is different for each stage, with the most apparent infrasound events occurring during accelerated deformation and rapid sliding stages. (2) During the deformation stage of the rock landslide, the infrasound waveform exhibits sharper features than during the sliding stage, with waveforms during the uniform deformation and slow sliding stages sloping to the right, and waveforms during the accelerated deformation and rapid sliding stages sloping to the left. (3) The infrasound frequencies in each stage are distributed between 0.01 and 20.0 Hz, among which the dominant frequencies in the uniform deformation stage and the slow sliding stage are mainly distributed between 0.01 and 10.0 Hz, and the dominant frequencies in the accelerated deformation stage and the rapid sliding stage are mainly distributed between 10.0 and 20.0 Hz. The findings of this study offer valuable insights for the development and application of rock landslide infrasound monitoring and early warning technology.

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.