Surveying methods and geodetic control in long railway tunnels construction
| العنوان: | Surveying methods and geodetic control in long railway tunnels construction |
|---|---|
| المؤلفون: | M. Vantini, A. Mancarella, R. Maseroli, N. Meistro, L. Surace |
| المصدر: | Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art ISBN: 9780429424441 Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art ISBN: 9781003031642 |
| بيانات النشر: | CRC Press, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Survey methodology, Data processing, GNSS applications, law, Computer science, Limit (music), Geodetic datum, Gyroscope, Satellite, Construct (python library), Industrial engineering, law.invention |
| الوصف: | Today satellite survey techniques (GNSS) allow to design and construct any kind of engineering infrastructures with very high accuracy and relatively simple measurement operations. Such capabilities cannot be exploited during the construction of long railway tunnels, when very high accuracy is required. It is fundamental that the bearings of the excavations, usually driven from two or more entrances, are determined with the highest possible accuracy, because once the work is completed any axis correction would result in significant extra-costs. Conventional surveying instruments and methods are not sufficient for such goals, while a consistent aid can be provided by precision gyroscopic devices that allow independent checking of the azimuthal directions, provided that gathered data are correctly processed. This report deals with measurements, data processing techniques, relevant problems and specific solutions adopted to overcome and limit errors and their propagation in the construction of “Terzo Valico” tunnel. |
| ردمك: | 978-0-429-42444-1 978-1-00-303164-2 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78594b5c6d4812f41341edf687c72ba7 https://doi.org/10.1201/9780429424441-425 |
| رقم الأكسشن: | edsair.doi.dedup.....78594b5c6d4812f41341edf687c72ba7 |
| قاعدة البيانات: | OpenAIRE |
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