Geodetic measurements in tunnel Šentvid
2006
This article describes the geodetic monitoring of the
impact that the tunnel excavations have on the rock
mass at the tunnel face in the Sentvid tunnel. In the
preliminary phase, an exploratory gallery was built
almost along the main tunnel axis to collect geological,
tectonic zone and other relevant data. The exploratory
gallery is now being used for geodetic and other
monitoring of the impact of tunnel excavations on the
surrounding rock mass. Before the beginning, methods
of point and station point stabilization, and a
measurement method were chosen. Thus, the chosen
methods are the method of 3D inner intersection with
adjustment of redundant observation for station point
determination, and the polar method for calculating
3D coordinates of detail points. The method of
determination of station point was chosen because of
the far reaching influence that the tunnel excavations
have on rock mass behaviour at the tunnel face.
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