Multistage Cascade Predictor of Structural Elements Movement in the Deformation Analysis of Large Objects Based on Time Series Influencing Factors

Hamzić, Adis; Avdagić, Zikrija; Besic, Ingmar

doi:10.3390/ijgi9010047

Cited by 4 publications

(5 citation statements)

References 28 publications

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“…At this stage, we have exceptionally included two articles published in early 2020 for presenting essential contributions in the discussion of the topics of structural health 13 and multisource monitoring. 14 This review is strictly limited to scientific publications. However, we note that there is an extensive development of services and solutions commercially offered by service providers and equipment manufacturers.…”

Section: Review Methodologymentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…A multivariate approach considered a set of these external variables: air temperature, water temperature, concrete temperature, displacements between dam blocks, inclination of dam blocks, uplift water pressure, and underground water pressure. 14 The model presented accuracy in the short term; however, the biggest limiter for the long term was the climatic forecast, especially concerning precipitation and air temperature, which directly influence the water level and the concrete temperature.…”

Section: Data Acquisitionmentioning

confidence: 97%

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Condition-based maintenance in hydroelectric plants: A systematic literature review

Santis

Gontijo

Costa

2021

Proceedings of the Institution of Mechanical Engineers, Part O:

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Industrial maintenance has become an essential strategic factor for profit and productivity in industrial systems. In the modern industrial context, condition-based maintenance guides the interventions and repairs according to the machine’s health status, calculated from monitoring variables and using statistical and computational techniques. Although several literature reviews address condition-based maintenance, no study discusses the application of these techniques in the hydroelectric sector, a fundamental source of renewable energy. We conducted a systematic literature review of articles published in the area of condition-based maintenance in the last 10 years. This was followed by quantitative and thematic analyses of the most relevant categories that compose the phases of condition-based maintenance. We identified a research trend in the application of machine learning techniques, both in the diagnosis and the prognosis of the generating unit’s assets, being vibration the most frequently discussed monitoring variable. Finally, there is a vast field to be explored regarding the application of statistical models to estimate the useful life, and hybrid models based on physical models and specialists’ knowledge, of turbine-generators.

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Section: Review Methodologymentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Data Acquisitionmentioning

confidence: 97%

See 1 more Smart Citation

Condition-based maintenance in hydroelectric plants: A systematic literature review

Santis

Gontijo

Costa

2021

Proceedings of the Institution of Mechanical Engineers, Part O:

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“…Therefore, the safety of dams is crucial for the normal operation of water engineering systems. Continuous monitoring is important in order to prevent any hazardous effects of dams [ 41 ].…”

Section: Research and Applications In Constructions Deformation Monit...mentioning

confidence: 99%

Review on the Research and Applications of TLS in Ground Surface and Constructions Deformation Monitoring

Teng

Shi

Wang

et al. 2022

Sensors

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With the gradual maturity of the terrestrial laser scanners (TLS) technology, it is widely used in the field of deformation monitoring due to its fast, automated, and non-contact data acquisition capabilities. The TLS technology has changed the traditional deformation monitoring mode which relies on single-point monitoring. This paper analyzes the application of TLS in deformation monitoring, especially in the field of ground surface, dam, tunnel, and tall constructions. We divide the methods for obtaining ground surface deformation into two categories: the method based on point cloud distance and the method based on displacement field. The advantages and disadvantages of the four methods (M2M, C2C, C2M, M3C2) based on point cloud distance are analyzed and summarized. The deformation monitoring methods and precisions based on TLS for dams, tunnels, and tall constructions are summarized, as well as the various focuses of different monitoring objects. Additionally, their limitations and development directions in the corresponding fields are analyzed. The error sources of TLS point cloud data and error correction models are discussed. Finally, the limitations and future research directions of TLS in the field of deformation monitoring are presented in detail.

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“…Deformation monitoring by comparing measured data during different periods describes the operational state of the dam in advance and intuitively, and plays an important role in scientific deformation prediction and safe operation judgment during the construction, operation, and management of the dam. In recent decades, many monitoring instruments have used appropriate methods to assess the status and safety of dams and other facilities [1][2][3][4][5]. Dam surface displacement is the primary metric of dam monitoring, and traditional monitoring methods (e.g., total station [6,7] and GPS [8][9][10]) primarily use single-point measurement modes, which use multiple monitoring points on the dam surface.…”

Section: Introductionmentioning

confidence: 99%

A Comparison Method for 3D Laser Point Clouds in Displacement Change Detection for Arch Dams

Li¹,

Liu²,

Li³

et al. 2021

IJGI

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Dam deformation monitoring can directly identify the safe operation state of a dam in advance, which plays an important role in dam safety management. Three-dimensional (3D) terrestrial laser scanning technology is widely used in the field of deformation monitoring due to its fast, complete, and high-density 3D data acquisition capabilities. However, 3D point clouds are characterized by rough surfaces, discrete distributions, which affect the accuracy of deformation analysis of two states data. In addition, it is impossible to directly extract the correspondence points from an irregularly distributed point cloud to unify the coordinates of the two states' data, and the correspondence lines and planes are often difficult to obtain in the natural environment. To solve the above problems, this paper studies a displacement change detection method for arch dams based on two-step point cloud registration and contour model comparison method. In the environment around a dam, the stable rock is used as the correspondence element to improve the registration accuracy, and a two-step registration method from rough to fine using the iterative closest point algorithm is present to describe the coordinate unification of the two states’ data without control network and target. Then, to analyze the displacement variation of an arch dam surface in two states and improve the accuracy of comparing the two surfaces without being affected by the roughness of the point cloud, the contour model fitting the point clouds is used to compare the change in distance between models. Finally, the method of this paper is applied to the Xiahuikeng Arch Dam, and the displacement changes of the entire dam in different periods are visualized by comparing with the existing methods. The results show that the displacement change in the middle area of the dam is generally greater than that of the two banks, increasing with the increase in elevation, which is consistent with the displacement change behavior of the arch dam during operation and can reach millimeter-level accuracy.

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Multistage Cascade Predictor of Structural Elements Movement in the Deformation Analysis of Large Objects Based on Time Series Influencing Factors

Cited by 4 publications

References 28 publications

Condition-based maintenance in hydroelectric plants: A systematic literature review

Condition-based maintenance in hydroelectric plants: A systematic literature review

Review on the Research and Applications of TLS in Ground Surface and Constructions Deformation Monitoring

A Comparison Method for 3D Laser Point Clouds in Displacement Change Detection for Arch Dams

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