Combined adjustment of GNSS observation results and slit meter measurements for the displacement detection at the Dniester HPP dam

Tretyak, K.; Zayats, Oleksandr; Hrabovyi, O.

doi:10.1007/s12518-023-00502-1

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…The reason for these seasonal opposite shifts is the temperature deformation of the dam (Tretyak and Palianytsia 2022). It is important to note that seasonal deformations of the dam are confirmed by the data of joint processing of geodetic and geotechnical sensors (Tretyak, Zayats and Hrabovyi 2023). Displacement occurs according to a linear law within seasonal periods (Tretyak and Palianytsia 2021), and it is necessary to consider the linear displacement speeds of control points within these periods.…”

Section: Fig 2 General View Of the Kaniv Hpp And Geological Zoning Of...mentioning

confidence: 99%

Complex InSAR radar image processing, GNSS, and TPS measurements to determine the Kaniv HPP dam deformations

Tretyak,

Nesterenko,

Bisovetskyi

2023

Preprint

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The article examines the combined use of satellite radar and stationary systems for monitoring spatial displacements of structures (SSMSDS) to detect vertical deformations of dams. The object of research is the dam of the Kaniv HPP in Ukraine. Dam deformation monitoring includes automated use of GEOMOS software, as well as a GNSS and TPS points network. DInSAR radar interferometry algorithms were applied to calculate the vertical displacements of the dam based on satellite observations. This study analyzed 30 satellite images from Sentinel-1, taken every 12 days from August 10th, 2020 to August 5th, 2021. The error in determining the vertical movement speed of the dam control points is based on the data of radio interferometric measurements relative to the results obtained from GNSS and linear-angular measurements for the period from August 2020 to February 2021. The error margin was found to be 0.41 mm/mo, with an average speed of -3.5 mm/mo during that period. From February 2021 to August 2021, the error margin increased to 0.85 mm/mo, with an average speed of + 1.7 mm/mo. Combining radar and ground measurements confirmed the seasonal spatiotemporal distribution of the rates of vertical dam displacements, with the dam body subsiding from August 2020 to February 2021 and then rising from February 2021 to August 2021. The radar measurements also identified anomalous speed zones with no GNSS points or reflectors for linear-angular measurements, which could indicate hidden defects related to the dam's strength. Overall, the results showed the effectiveness of using DInSAR technology and ground-based automated systems to monitor potentially dangerous objects, such as dams.

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Section: Fig 2 General View Of the Kaniv Hpp And Geological Zoning Of...mentioning

confidence: 99%

Complex InSAR radar image processing, GNSS, and TPS measurements to determine the Kaniv HPP dam deformations

Tretyak,

Nesterenko,

Bisovetskyi

2023

Preprint

Self Cite

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Monitoring of spatial displacements and deformation of hydraulic structures of hydroelectric power plants of the Dnipro and Dnister cascades (Ukraine)

Tretyak,

Bisovetskyi,

Savchyn

et al. 2023

Journal of Applied Geodesy

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The paper presents monitoring of spatial displacements and deformation of hydraulic structures of hydroelectric power plants of the Dnipro and Dnister cascades using permanent deformation monitoring systems (PDMS). The architecture of the geodetic (measuring) component of monitoring systems deployed at Kaniv, Dnipro, Seredniodniprovska and Dnister HPP (all in Ukraine) are presented, as well as deformation monitoring structure of this systems. Analysis of the impact of geodynamic and seismic factors on the operation of selected monitoring systems are presented. The spatial deformations of the base points on all the studied monitoring systems were determined. As a result of the analysis of the obtained values, it was found that the deformations of the dam crest have a seasonal nature (with half-annual period) of movements, and are characterized by the corresponding vector field and the absolute value of spatial movements.

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The influence of the natural and technical geosystem on the dynamic processes in the functioning environment of the Dniester PSPP

Zyhar

2023

HGJournal

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The aim is to describe the field methods for studying the impact of the Dniester PSPP natural and technical geosystem (NTGS) on dynamic processes in the environment of its operation. A comprehensive research methodology was used to analyse the field methods for studying the impact of the Dniester PSPP natural and technical geosystem on dynamic processes in the environment of its operation. The initial stage included an analysis of the results of previous scientific studies on the impact of hydraulic engineering facilities on the environment. This made it possible to take into account previous findings and identify existing knowledge in this area. Next, we carried out on-site (field) data collection, which included in-situ measurements and observations directly in the area of the research object. For this purpose, specialised data collection devices were used. Particular attention was paid to the statistical analysis of the data obtained, which allowed us to identify the relationships between various factors that affect the dynamic processes of the environment. In the 21st century, geography is becoming an even more important and responsible science due to the growth of global challenges, such as climate change, environmental management, population migration, and others. An integrated approach allows geographers to look at problems from different perspectives and develop comprehensive solutions. Modern technologies, such as geographic information systems (GIS), satellite imagery, remote sensing, etc., provide geographers with new opportunities for collecting, analysing and interpreting data, which helps to solve complex problems more efficiently. An example of the application of an integrated approach in studying the impact of the natural and technical geosystem of the Dniester cascade of HPPs and PSPs on dynamic processes. Scientific novelty. The research in the article allows us to expand the understanding of the specific problem of managing anthropogenic load in a natural and technical system. The analysis of the object being designed as a system containing two most important parts – technical and natural - makes the systems approach not a decoration, but a prerequisite for the work of a natural scientist: geographer, ecologist – an ally, an associate of the designer. Designing, creating an environment that is optimal for human life means designing such systems, structures, and technologies so that they are as closely related to the existing relationships in nature as possible.

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Combined adjustment of GNSS observation results and slit meter measurements for the displacement detection at the Dniester HPP dam

Cited by 3 publications

References 10 publications

Complex InSAR radar image processing, GNSS, and TPS measurements to determine the Kaniv HPP dam deformations

Complex InSAR radar image processing, GNSS, and TPS measurements to determine the Kaniv HPP dam deformations

Monitoring of spatial displacements and deformation of hydraulic structures of hydroelectric power plants of the Dnipro and Dnister cascades (Ukraine)

The influence of the natural and technical geosystem on the dynamic processes in the functioning environment of the Dniester PSPP

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