基于变形和故障的声学排放活性波导系统的监测警告标准
Ke Zhang1, Liang Wang2, Guoqiang Meng3
1Department of Earth Sciences and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
Scientific reports
|May 18, 2024
概括
这项研究引入了一个主动波导系统,以改善对地质危害的声学排放监测. 新系统提高了信号质量,有助于早期预警和了解土壤衰竭过程.
科学领域:
- 地质技术工程 地质技术工程
- 地质物理学 地质物理学
- 信号处理 信号处理
背景情况:
- 音响排放 (AE) 监测对于地质危险的早期预警至关重要.
- 目前的土壤AE监测面临着弱信号和高衰减的挑战.
- 活动波导模型为增强监测数据质量提供了潜力,但需要进一步研究.
研究的目的:
- 设计和评估一个主动波导系统,以改善AE对土壤变形和故障的监测.
- 使用AE. 解构在洛斯地区地质灾害的先驱信息.
- 建立一个标准系统,以AE为基础的早期预警在许多地区.
主要方法:
- 设计并实施了AE监控的活跃波导系统.
- 对被动波导模型进行了比较实验.
- 分析的AE信号特征:波形参数,RA-AF,r值,b值和频率幅度.
- 研究了AE信号演变,早期预警信号和故障形态.
主要成果:
- 与被动模型相比,主动波导模型显示出更高的数据质量.
- 确定了不同的AE信号演变规律和Loess变形和故障的前体信息.
- 开发了一种使用RA-AF值区分故障模式的方法.
- 在土壤衰竭期间表征AE r-value和b-value行为.
结论:
- 活跃波导系统显著提高了AE监测数据的质量,用于地质危险评估.
- 该研究提供了对AE信号特征和主动波导系统的演变的全面了解.
- 已经建立了一个新的AE标准系统,用于主动波导监控,这对于洛斯灾难的早期预警至关重要.
相关概念视频
Dynamic Modulus of Elasticity of Concrete
312
The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
312
Yield Criteria for Ductile Materials under Plane Stress
160
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
160


