Deformation Monitoring and Analysis of Reservoir Dams Based on SBAS-InSAR Technology—Banqiao Reservoir

Pang, Zhiguo; Jin, Qinian; Fan, Pingyi; Jiang, Wei; Lv, Juan; Zhang, Pengjie; Cui, Xiangqun; Zhao, Chun‐Xia; Zhang, Zhengjia

doi:10.3390/rs15123062

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…The results obtained through PSInSAR were consistent with traditional geodetic methods and GNSS measurements. Additionally, Pang et al (2023) confirmed the effectiveness of SBAS-InSAR technology in studying vertical displacements of the Banqiao Reservoir Dam surface in China between 07/03/22 and 08/20/22. The dam displacement fluctuated between 4 to -8 mm, with the largest deviations between InSAR and GNSS (BeiDou) monitoring values being 2 mm.…”

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confidence: 61%

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: Page Layoutsupporting

confidence: 61%

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 SBAS-InSAR method [21], as a representative time series InSAR technique, effectively overcomes the effects of temporal and spatial decorrelation and atmospheric delays by appropriately combining interferograms to analyze distributed scatterers (DSs) with high coherence. Research results from the application of SBAS-InSAR technology in dam monitoring [22][23][24] demonstrate that this technique can efficiently and accurately obtain deformation monitoring results for dams, allowing for real-time assessment of the dams' operational health status.…”

Section: Introductionmentioning

confidence: 99%

Deformation Monitoring and Potential Risk Detection of In-Construction Dams Utilizing SBAS-InSAR Technology—A Case Study on the Datengxia Water Conservancy Hub

Ouyang,

Feng,

Feng

et al. 2024

Water

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Deformation monitoring plays a pivotal role in assessing dam safety. Interferometric Synthetic Aperture Radar (InSAR) has the advantage of obtaining an extensive range of deformation, regardless of weather conditions. The Datengxia Water Conservancy Hub is the largest in-construction dam in China. To effectively assess the in-construction dam safety, the SBAS-InSAR (Small Baseline Subset-InSAR) technique and 86 Sentinel-1 images (from 11 February 2020, to 16 January 2023) have been employed in this study to monitor the deformation over the reservoir and its surrounding areas. The reliability of the SBAS-InSAR monitoring results over the study area was demonstrated by the in situ monitoring results. And the InSAR results show that the central section of the left dam exhibits the most substantial cumulative deformation, attributed to the maximal water pressure. This is closely followed by the left end of the dam, which reflects a similar but smaller deformation. However, the in-construction cofferdam facilities make the right-end section of the left dam more robust, and the deformation is the most stable. Additionally, significant deformation of the auxiliary dam slope has been identified. Moreover, the analysis indicated that the deformation of the four upstream slopes is closely related to the precipitation, which potentially poses a threat to the safety of the Datengxia Dam.

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“…In 1959, the Malpasset arch dam in France burst due to the instability of the dam shoulder, causing a huge loss of life and property [9]. Since a strong dam can reduce the downstream impact of landslides and rapid changes in water levels, it can be said that dam safety is related to the safety of downstream people's lives and production [10]. As an important indicator for evaluating dam safety, it is necessary to carry out the comprehensive and regular deformation monitoring of dams.…”

Section: Introductionmentioning

confidence: 99%

Dam Surface Deformation Monitoring and Analysis Based on PS-InSAR Technology: A Case Study of Xiaolangdi Reservoir Dam in China

Wang,

Gao,

Gong

et al. 2023

Water

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The Xiaolangdi Dam is a key project for the control and development of the Yellow River. It bears the functions of flood control, controlling water and sediment in the lower reaches, ice prevention, industrial and agricultural water supply, power generation, and so on. Its safety is related to people’s life and property safety and local economic and social development. It is of great significance to carry out comprehensive and regular deformation monitoring for dams since the deformation is an important evaluation index for dam safety. Interferometric Synthetic Aperture Radar (InSAR) technology has been a rapidly evolving technology in the field of space geodesy in recent years. It offers advantages such as high monitoring precision, extensive coverage, and high monitoring point density, making it a powerful tool for monitoring deformations in hydraulic engineering projects. Based on Sentinel-1 data covering the Xiaolangdi Dam from September 2020 to November 2022, the PS-InSAR technique was used to obtain the surface deformation of the Xiaolangdi Dam, and reservoir water level data on image acquisition dates were obtained for joint analysis. The results show that there is a large deformation in the center of the dam crest of the Xiaolangdi Dam, while both sides of the slope and downstream dam foot are relatively stable. The time series deformation of the dam body is closely related to the reservoir water level change. When the water level increases, the dam body tends to deform downstream; when the water level decreases, the dam body tends to deform upstream. The deformation and water level of the Xiaolangdi Dam exhibit a clear negative correlation. There is no significant cumulative deformation on the dam slopes or at the base of the dam. However, cumulative deformation occurs over time in the central area of the dam’s crest. The deformation process at the central area of the dam’s crest follows a continuous and non-disruptive pattern, which is consistent with the typical deformation behavior of the Xiaolangdi earth–rock dam structure. Therefore, it is judged that the current deformation of the Xiaolangdi Dam does not impact the safe operation of the dam. InSAR technology enables the rapid acquisition of high-precision, high-density deformation information on the surfaces of reservoir dams. With an increasing number of radar satellites in various frequency bands, such as Sentinel-1 and TerraSAR-X, there is now an ample supply of available data sources for InSAR applications. Consequently, InSAR technology can be extended to routine monitoring applications for reservoir dam deformations, especially for small and medium-sized reservoirs that may not be equipped with ground measurement tools like GNSS. This holds significant importance and potential for enhancing the safety monitoring of such reservoirs.

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Deformation Monitoring and Analysis of Reservoir Dams Based on SBAS-InSAR Technology—Banqiao Reservoir

Cited by 4 publications

References 17 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

Deformation Monitoring and Potential Risk Detection of In-Construction Dams Utilizing SBAS-InSAR Technology—A Case Study on the Datengxia Water Conservancy Hub

Dam Surface Deformation Monitoring and Analysis Based on PS-InSAR Technology: A Case Study of Xiaolangdi Reservoir Dam in China

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