Legkiy V. V., Arestov A. V. Sovershenstvovaniye geodezicheskikh rabot pri proyektirovanii zheleznodorozhnoy vysokotochnoy koordinatnoy sistemy [Improvement of geodetic works in the design of railway high-precision coordinate system]. Sovremennye tekhnologii. Sistemnyi analiz. Modelirovanie [Modern Technologies. System Analysis. Modeling], 2019. Vol. 64, No. 4. Pp. 112–118. DOI: 10.26731/1813-9108.2019.4(64). 112-118
10.26731/1813-9108.2019.4(64).112–118
The Russian Railways have successfully implemented a comprehensive spatial data system of the railway transport infrastructure (RTI CSDS), which includes digital models of railway tracks. One of the main tasks during the implementation of the RTI CSDS in railway transport was to establish a single spatiotemporal space for geodetic constructions with determination throughout the territory of the Russian Federation. However, the production of geodetic works on the creation and further operation of the RTI CSDS does not provide for the involvement of geodynamic phenomena. In case of crossing territories with different geodynamic activity, the railway track will undergo spatial changes over time. Accordingly, the digital track model of this railway track at some point will cease to satisfy the accuracy of the construction. The method of detection of geodynamic polygons out of the conditions of ensuring stability of digital track models has been developed. The improved technology of geodetic works taking into account geodynamic phenomena when creating and operating digital models of railway tracks has been developed. The algorithm was tested at a specific section of the railway track. As a result of applying the algorithm, the average spatial position of the track axis is reduced by 4.1 %. A geodynamic polygon with the prospect of creating a digital model of railway tracks was identified and studied. As a result of geodynamic phenomena when performing geodetic works accordin to the existing technology, in the plan and in the profile, the average quadratic error between neighboring geodetic points created to ensure the RTI CSDS will exceed the allowable one after 4.5 years.
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