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Application of selected robust estimation methods for calculating vertical displacements of hydrotechnical structures

Muszyński Z.

Studia Geotechnica et Mechanica

2010

Vol. 32, nr 1

69-80

The subject of this paper concerns, in general, geodetic surveys of vertical displacements in hydro-engineering. Special attention has been paid to the issue of the correct assessment of settlement, which, in turn, depends on the proper identification of fixed reference benchmarks. In classical methods sometimes it is very difficult to identify which reference marks are fixed. The paper presents the possibility of applying robust estimation methods (on the example of Huber's method and the linear method) for the purpose of fixed benchmark detection. Displacement values obtained in this way are more reliable and resistant to the influence of incorrect reference mark identification. The problem is illustrated by means of calculations of vertical displacements of the Lipki weir.