Vertical displacement measurements as an important aspect of education of geodetic surveyors
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Wrocław University of Science and Technology
Faculty of Geoengineering, Mining and Geology
Submission date: 2021-04-12
Final revision date: 2021-05-18
Acceptance date: 2021-05-18
Publication date: 2021-06-30
Corresponding author
Zbigniew Muszyński
Wrocław University of Science and Technology Faculty of Geoengineering, Mining and Geology
ul. Na Grobli 15, 50-421 Wrocław
Geomatics, Landmanagement and Landscape 2021;(2)
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ABSTRACT
The rapid development of industry, the automation of production, processing, and mining processes increasingly put more demands on the scope and accuracy of geodetic surveying. Obtaining precise data on the spatial location of objects involved in the production process is indispensable for the effi cient management of that process. Registered changes in the geometry of objects may indicate potential threats that may adversely aff ect the safe operation of the given object. One of the most diffi cult tasks in engineering surveying is the control of displacements and deformations of building objects and their surroundings. Th is issue is very broad and concerns most industrial facilities, including opencast mines, landslide areas, cooling towers, water dams, as well as securing deep excavations in compact urban development, verticality control of industrial chimneys and wind farms. Each object has its own specifi c features and requires an individual approach in the fi eld of measuring network design, the selection of an appropriate measurement technique, and systematic geodetic monitoring of displacements. The key aspect is the professional experience of the surveyor – the geodesist who is managing this type of work. Already at the stage of educating future engineers, it is important not only to provide them with appropriate theoretical knowledge, but also to enable them to acquire practical skills. For this reason, science camps have been organized since 2013 as part of the process of educating geodesy and cartography students at the Wrocław University of Science and Technology. The thematic scope of the camps includes the measurement of displacements of a unique engineering structure over 50 meters high, which is the fi gure of Christ the King of the Universe, located in Świebodzin. Students gain professional experience using the latest measuring instruments: digital precision levels, motorized electronic total stations, GNSS satellite receivers, and laser scanners. The students, who face real-life surveying challenges, gain valuable professional experiences that improve their qualifi cations and better prepare them for their future work. The article presents science camps as one of the additional forms of educating surveyors. The scope of work performed during the science camp is presented, and the basic measurement techniques are described. Particular attention was paid to the empirical assessment of the accuracy of the results of measurements of vertical displacements performed by students using the precision levelling method. For the measurement data collected over a period of 8 years, the mean levelling errors were calculated on the basis of the analysis of the levelling sections and polygons. The obtained accuracy meets the requirements for measurements performed in order to determine vertical displacements.