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Title
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An innovative 3D system for thermal monitoring of seepage and erosion processes and an example of its use for upgrading the monitoring system at the Kozłowa Góra dam in Poland
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Author
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Radzicki, Krzysztof
Stoliński, Marek
Siudy, Andrzej
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Published in
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Twenty-Fifth International Congress on Large Dams, 17-19 June 2015, Stavanger - Norway
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Numbering
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Q. 99, R. 7
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Pages
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85-101
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Release date
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2015
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Place of publication
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Paris
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Publisher
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International Commision on Large Dam
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Language
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English
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ISSN
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978-2-8139-0073-9
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Comments
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CIGB : Twenty-Fifth International Congress on Large Dams, Stavanger - Norway 17-19 June 2015 = ICOLD : Vingt-Cinquième Congrès International des Grands Barrages, Stavanger - Norway 17-19 June 2015
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Keywords
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dam aging, long-term dam monitoring, thermal monitoring, monitoring, leakage, erosion, seepage proces, dam, dyke, MPointS, Therm3Detect
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Abstract
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The erosion processes are some of the major threats for the safety of earth dams, channel embankments and flood protection dykes. The identification of their situation in space and their dynamics is of key importance for a correct safety assessment of the damming structure and for optimising the necessary repairs. The thermal monitoring method is a recognised and one of the recommended methods for detection and analysis of these processes. One of the factors ensuring its effectiveness is the distributed temperature sensing by means of fibre optic cables, enabling the continuous monitoring of seepage and erosion processes all along a dam or dyke. However, for existing damming structures it may be difficult and relatively expensive to apply this method, particularly in the case of short measurement sections, which can affect the extent of its common use. This article presents the assumptions and an example of the application of a 3D system for thermal monitoring of damming structures, where an innovative, no-excavation solution, enabling cheap, quasi-continuous temperature measurements all along the damming structure, plays a special role. It is complemented with vertical temperature measurement profiles designed to exactly identify intensified erosion processes at cross-sections of the dam. This system was used, inter alia, at the main dam of the Kozłowa Góra Reservoir, where intensified seepage and erosion processes were found at a number of places, particularly when the 2010 flood wave occurred there, including a local liquefaction of the landside foot. This reservoir is one of the key reservoirs in the system of water supplies for Śląskie Province and for flood protection in Poland. At the same time, the installation was designed as an advanced field laboratory serving to develop thermal monitoring methods, particularly with a view to their application on an existing damming structure. Among others, a system to simulate leakage was installed on the damming structure. This article describes the Kozłowa Góra Dam and the seepage and erosion problems observed there and it presents basic information concerning the thermal monitoring method. It also describes the innovative thermal monitoring system applied there and presents the first measurements carried out in it.
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PKT classification
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382700 Przyrządy do pomiaru wielkości cieplnych
872100 Metody pomiarowe i opracowanie wyników pomiarów
621900 Śródlądowe budownictwo hydrotechniczne
383123 Technika pomiarowa i aparatura badawcza w gospodarce wodnej
380000 Technika pomiarowa. Aparatura naukowo-badawcza
870000 Metrologia
271900 Geofizyka (litosfery)
620000 Gospodarka wodna
383100 Technika pomiarowa i aparatura badawcza nauk ścisłych i przyrodniczych oraz w gospodarce wodnej
270000 Nauki geologiczne
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Department
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Faculty of Environmental and Power Engineering
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License
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Access rights
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Zasób dostępny dla wszystkich
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Link to the Publication Bibliography of the PK Employees
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