Agnieszka Ochałek

Mrs. Agnieszka Ochałek

AGH University of Science and Technology

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2018 in Civil and Environmental Engineering Reports
Verified
Journal Article
Open access
PDF file
AOAgnieszka Ochałek
Agnieszka Ochałek
WNWitold Niewiem
Witold Niewiem
EPEdyta Puniach
Edyta Puniach
PĆPaweł Ćwiąkała
Paweł Ćwiąkała
In this paper, authors present results of accuracy verification of the Trimble RTX technology. The GNSS receiver Spectra Precision SP60 was used in Cyprus (Kato Paphos Archaeological Park). To evaluate the accuracy of the receiver, two measuring test networks (consisting of 30 and 55 control points) were established. All points were determined in four measuring cycles. Additionally, in order to make more advanced analysis of the data, the bases were also measured by using another GNSS receiver - Geomax-Zenith 25. The point positions, in this case, were conducted in the local coordinate system of Kato Paphos Archaeological Park by using RTK positioning technology. To make a comparison, it was necessary to transform the coordinates based on different groups of fitting points. Analysis allowed to conclude that the Spectra Precision SP60 receiver and the RTX Trimble technology guarantee repeatable results (on the level of 4 cm) of point positioning measurements.

23 March 2018
Verified
Conference Paper
Open access
AOAgnieszka Ochałek
Agnieszka Ochałek
TLTomasz Lipecki
Tomasz Lipecki
WJWojciech Jaśkowski
Wojciech Jaśkowski
MJMateusz Jabłoński
Mateusz Jabłoński
The significant part of the hydrography is bathymetry, which is the empirical part of it. Bathymetry is the study of underwater depth of waterways and reservoirs, and graphic presentation of measured data in form of bathymetric maps, cross-sections and three-dimensional bottom models. The bathymetric measurements are based on using Global Positioning System and devices for hydrographic measurements – an echo sounder and a side sonar scanner. In this research authors focused on introducing the case of obtaining and processing the bathymetrical data, building numerical bottom models of two post-mining reclaimed water reservoirs: Dwudniaki Lake in Wierzchosławice and flooded quarry in Zabierzów. The report includes also analysing data from still operating mining water reservoirs located in Poland to depict how bathymetry can be used in mining industry. The significant issue is an integration of bathymetrical data and geodetic data from tachymetry, terrestrial laser scanning measurements.

1 January 2016 in Geology, Geophysics and Environment
Verified
Journal Article
Closed access
MJMateusz Jabłoński
Mateusz Jabłoński
TLTomasz Lipecki
Tomasz Lipecki
WJWojciech Jaśkowski
Wojciech Jaśkowski
AOAgnieszka Ochałek
Agnieszka Ochałek

7 November 2020 in Geosciences
Verified
Journal Article
Open access
PDF file
AOAgnieszka Ochałek
Agnieszka Ochałek
WJWojciech Jaśkowski
Wojciech Jaśkowski
MJMateusz Jabłoński
Mateusz Jabłoński
The hoist assembly based on the Koeppe friction is a commonly used solution in mining. However, it has some disadvantages. A few centimeters offset of the groove axis can lead to excessive abrasion of linings on the Koeppe friction and pulleys. As a consequence, the mines are forced to bear the direct and indirect costs of replacing the linings such as the cost of materials and service as well as the cost of extended machine and shaft downtime. Last year, the authors undertook a geodetic inventory of the condition of two hoisting machines with a Koeppe winder. Terrestrial laser scanning enhanced with precision total station measurements were performed. Additionally, elements particularly important for the performed analysis (inclination of hoisting machine and rope wheels shafts) were determined by the precision leveling technique. Obtained results were verified using measurements on Szpetkowski’s tribrach. Appropriate selection of the measurement methods in both analyzed examples allowed us to determine the causes of destruction of each hoist assembly component. Based on precise geodetic data, guidelines have been defined for rectification (twisting and shifting the rope pulleys), which seems unavoidable despite the lack of unambiguous legal regulations.