GEODYNAMICS

IF 1 Q3 GEOCHEMISTRY & GEOPHYSICS Geodynamics Pub Date : 2023-06-01 DOI:10.23939/jgd2023.01.019
Andrii Zyhar
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Abstract

The main purpose of the study is to identify the relationship between changes in water level and soil deformation, where the cyclic change in loads on the reservoir bed is the stress deviator, i.e., the PSPP reservoir acts as an oscillator of transverse vibrations, and the soil extensometer performs the function of reading and recording these vibrations. Methodology. Solution of the problem requires recording the time series of water level fluctuations and extensometer sensor fluctuations on all depth horizons. It is also necessary to perform a fast Fourier transform for water level fluctuations separately and similarly to each extensometer sensor fluctuation. We need to separately calculate the signal power spectrum of all sensors in the soil, and compare the amplitude-frequency, phase-frequency components of the power spectra of water level oscillations and vertical oscillations of the extensometer sensors. Results. During the studies, it was found that the PSPP reservoir is a source of low-frequency vibrations in a wide spectral range. These vibrations have a very long wavelength, measured in tens of thousands of kilometers, which can propagate over long distances, both along the front of geological layers and in depth. Scientific innovation. The research in this article allows us to more accurately assess the frequency spectrum of vibrations and identify possible resonance phenomena that may occur in soils during the operation of a power facility. In addition, this study was conducted in a specific region, which makes it possible to obtain more accurate data on the impact of low-frequency vibrations on the geosystem in this region. Thus, this paper may be of interest to specialists in the field of geotechnics, geology, and energy. It can also be used in the planning and operation of other power facilities in similar conditions. Practical significance. Low-frequency waves can be detected by seismic instruments such as seismometers. The results of this study will help to correct the analysis and interpretation of seismograms, which is important for understanding the processes occurring in the hydroelectric power plant operation area.
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运动学
研究的主要目的是确定水位变化与土壤变形之间的关系,其中水库床上荷载的循环变化是应力偏差,即PSPP水库作为横向振动的振荡器,土壤延伸仪承担读取和记录这些振动的功能。方法。要解决这个问题,需要记录所有深度层面的水位波动和延伸计传感器波动的时间序列。还需要对水位波动分别进行快速傅里叶变换,类似于每个延伸计传感器的波动。我们需要分别计算土壤中所有传感器的信号功率谱,比较水位振荡和垂向振荡的功率谱幅频、相频分量。结果。在研究过程中,发现PSPP储层是一个宽谱范围的低频振动源。这些振动的波长很长,可以测量到数万公里,可以沿着地质层的前端和深处传播很长一段距离。科学创新。本文的研究使我们能够更准确地评估振动的频谱,并识别在电力设施运行过程中可能发生的土壤共振现象。此外,本研究是在特定区域进行的,可以获得更准确的低频振动对该区域地球系统影响的数据。因此,本文可能会引起岩土工程、地质和能源领域专家的兴趣。也可用于类似条件下其他电力设施的规划和运行。现实意义。地震仪等地震仪器可以探测到低频波。本文的研究结果将有助于修正地震记录的分析和解释,这对了解水电站运行区域发生的过程具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Geodynamics
Geodynamics GEOCHEMISTRY & GEOPHYSICS-
自引率
33.30%
发文量
11
期刊最新文献
GEODYNAMICS GEODYNAMICS GEODYNAMICS GEODYNAMICS GEODYNAMICS
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