First results from long-term monitoring of distance using a laser distance meter in shallow medieval mine.

Autor: Kaláb, Zdeněk, 1959-
Další autoři:
Jazyk: angličtina
Předmět:
Druh dokumentu: Non-fiction
ISSN: 1214-9705
Abstrakt: Abstract: The oldest mine cavities of the Jeroným Mine were already mined out more than 400 years ago. That is why it is necessary to determine the stability of individual parts of underground spaces. The assessment of stability of mine cavities is based on the long-term monitoring of chosen parameters. A distributed measurement network has been operated here using several different types of sensors. A laser distance meter that is used for measuring the height of a large chamber is one of these sensors. The results obtained from this monitoring are presented. Even if no apparent correlation seems to be visible between Earth’s tides and LDM variations, some features of recorded data, like dynamical frequency crossover in the power spectrum, could be due to the tidal cycles of the Earth.
Databáze: Katalog Knihovny AV ČR