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Landslide Dynamic Change Monitoring System Based on Measurement of Multiple Scattered Waves

A technology of multiple scattering and monitoring systems, which is applied in the direction of measuring ultrasonic/sonic/infrasonic waves, measuring devices, and material analysis using acoustic wave emission technology. It can solve the problems of landslide dynamic change monitoring systems without multiple scattering waves, and achieve low cost. , high precision, simple deployment effect

Active Publication Date: 2022-04-26
INST OF GEOPHYSICS CHINA EARTHQUAKE ADMINISTRATION
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  • Application Information

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Problems solved by technology

Because environmental vibrations are ubiquitous and act on many microstructures inside the landslide, they carry multiple scattered waves. However, at present, there is no landslide dynamic change monitoring system based on the measurement of multiple scattered waves.

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  • Landslide Dynamic Change Monitoring System Based on Measurement of Multiple Scattered Waves
  • Landslide Dynamic Change Monitoring System Based on Measurement of Multiple Scattered Waves
  • Landslide Dynamic Change Monitoring System Based on Measurement of Multiple Scattered Waves

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Embodiment Construction

[0017] Such as figure 2 As shown, the landslide dynamic change monitoring system based on the measurement of multiple scattered waves in the present invention is a monitoring system that uses environmental vibration to passively extract multiple scattered waves. The way to extract multiple scattered waves is to use the environmental vibration receiving device to obtain the environment on the landslide Vibration data, and do cross-correlation calculation on the vibration data received at the same time in pairs to obtain multiple scattering waves propagating inside the landslide; by comparing the reference waveform of multiple scattering waves with the multiple scattering waves in the hourly cross-correlation function The two physical quantities of wave velocity change and micro-crack change are obtained by the phase difference and the difference in waveform similarity. These two physical quantities can be regarded as the main indicators of dynamic changes inside the landslide....

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Abstract

The invention relates to a landslide dynamic change monitoring system based on the measurement of multiple scattered waves. It is a monitoring system that uses environmental vibration to passively extract multiple scattered waves. The way to extract multiple scattered waves is to use an environmental vibration receiving device to obtain Environmental vibration data, and the cross-correlation calculation of these vibration data received at the same time is performed in pairs to obtain the multiple scattering waves propagating inside the landslide; by comparing the reference waveform of the multiple scattering waves with the multiple scattering in the hourly cross-correlation function The phase difference of the wave and the difference in the similarity of the waveform are used to obtain the two physical quantities of the wave velocity change and the micro-crack change. The environmental vibrations include: natural and human-induced weak vibrations on landslides with a frequency ranging from a few hertz to tens of hertz. It has the advantages of low cost, high precision, easy deployment, and long-term monitoring and judging the health status of landslides.

Description

technical field [0001] The invention relates to a landslide dynamic change monitoring system, in particular to a landslide dynamic change monitoring system based on measuring multiple scattered waves. Background technique [0002] Multiple scattering waves are waves that go back and forth between the microstructures of the landslide body and propagate repeatedly. Because environmental vibrations are ubiquitous and act on many microstructures inside the landslide, they carry multiple scattered waves. However, at present, there is no landslide dynamic change monitoring system based on the measurement of multiple scattered waves. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects of the prior art, and provide a landslide dynamic change monitoring system based on measuring multiple scattered waves. [0004] In order to achieve the above object, the landslide dynamic change monitoring system based on the measureme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/07G01N29/14G01H17/00
CPCG01N29/075G01N29/14G01H17/00G01N2291/011G01N2291/012
Inventor 谢凡
Owner INST OF GEOPHYSICS CHINA EARTHQUAKE ADMINISTRATION
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