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Tunel-akwedukt Eupalinos – arcydzieło helleńskiej sztuki budowlanej i mierniczej sprzed 2550 lat

Bryś Henryk

Przegląd Geodezyjny

2021

R. 93, nr 10

14--16

Autor na podstawie publikacji i prezentacji ze stron internetowych, w zwięzły sposób opisuje historię budowy najdłuższego tunelu-akweduktu Eupalinos na wyspie Samos z VI-wieku p.n.e. Szczególną uwagę poświęca powierzchniowym pracom pomiarowym, wytyczaniem oraz drążeniem wykopu podziemnego tunelu w starożytnej Helladzie. Budowa tunelu-sztolni to jedno z największych osiągnięć starożytnej techniki pomiarowej oraz inżynierii lądowej i wodnej.

The author, based on publications and presentations from websites, briefly describes the history of the construction of the longest Eupalinos tunnel-aqueduct on the island of Samos from the 6th century BC. Particular attention is paid to surface measurement works, marking out and boring of an underground tunnel in ancient Hellas. The construction of the tunnel-aqueduct is one of the greatest achievements of the ancient measurement technique and civil engineering

Installation of GNSS receivers on a mobile railway platform – methodology and measurement aspects

Dąbrowski Paweł S., Specht Cezary, Koc Władysław, Wilk Andrzej, Czaplewski Krzysztof, Karwowski Krzysztof, Specht Mariusz, Chrostowski Piotr, Szmagliński Jacek, Grulkowski Sławomir

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2019

nr 60 (132)

18--26

Determining the course of a railway track axis using satellite methods relies on ensuring the precise assembly of GNSS receivers in dedicated measuring devices. Depending on the number of receivers, solutions that are based on placing the apparatus directly above the railway track axis (as well as in eccentric positions) are used to indirectly obtain data to form the basis of the desired results. This publication describes the installation of five GNSS receivers on a mobile measuring platform as part of the InnoSatTrack project. The methodology and the procedure of the geodetic measurements required to obtain the geometrical configuration of the measuring apparatus, specified in the technical project, are presented. The publication presents the principles of total station measurement methods as well as the steps taken to achieve precise results from staking out. The process of acquiring the same configuration of the GNSS receivers, based on the geometry of the squares on the two measuring platforms that were used in the research, has been shown. The final determination of the position of the receivers did not exceed an error of 0.010 m with an average error of 0.003 m, despite the occurrence of mounting difficulties. The results have demonstrated the high credibility and effectiveness of the presented solution.