Control network reliability reconstruction for Zatonie dam
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Faculty of Geodesy and Cartography, Warsaw University of Technology, Pl. Politechniki 1, 00-661, Warszawa, Poland
Submission date: 2017-07-03
Acceptance date: 2018-01-24
Online publication date: 2018-07-17
Publication date: 2018-06-01
Reports on Geodesy and Geoinformatics 2018;105:1–5
Absolute horizontal displacements are an important element of dam safety level assessment. Appropriate design of measurement network is a prerequisite for the acquisition of displacement values that meet the reliability requirements. A network of this kind, apart from ensuring the required precision of displacement determination, should be characterised by reliability allowing for elimination of gross errors in the results of geodetic surveys. This study aims to propose a method to improve reliability characteristic of surveying network used for horizontal displacement identification in Zatonie dam. The desired effect (increase in the network’s reliability) is obtained by the authors in two stages. The first stage concerns expansion of the existing network by addition of three free stations. As the obtained effect did not prove to be satisfactory, in the second stage so called observation accuracy harmonisation was carried out, which optimally utilises the reliability potential of the measurement construction. In order to successfully carry out the harmonisation, a modification to the procedure’s algorithm had to be introduced. A design of a network ensuring detection of a gross error in any given observation was obtained as the result of the performed actions.
Baarda, W. (1967). Statistical concepts in geodesy, volume 2 of Publication on Geodesy, New Series. Netherlands Geodetic Commision.
Baarda, W. (1968). A testing procedure for use in geodetic networks, volume 2 of Publication on Geodesy, New Series. Netherlands Geodetic Commision.
Nowak, E. (2011). Reliability design of geodetic networks by quality harmonization of observations. Reports on Geodesy, 90(1):341–347.
Nowak, E. (2013). Przewodnik komputerowo wspomaganego projektowania układów obserwacyjnych. The raport is a part of the 23th Development Program of the Warsaw University of Technology carried out under the Human Capital Operational Programme.
Odziemczyk, W. (2014). Analiza stałości bazy odniesienia na przykładzie monitoringu przemieszczeń poziomych zapory Zatonie. In Kulesza, J. and Wyczałek, I., editors, Teoretyczne podstawy budownictwa – geodezyjne systemy pomiarowe, pages 19–26. Wydawnictwo Politechniki Warszawskiej.
Prószyński, W. (1994). Criteria for internal reliability of linear least squares models. Bulletin Géodésique, 68(3):162–167.
Prószyński, W. and Kwaśniak, M. (2002). Niezawodność sieci geodezyjnych. Oficyna Wydawnicza Politechniki Warszawskiej.