Observing slope stability changes on the basis of tilt and hydrologic measurements.

Autor: Mentes, Gy.
Předmět:
Zdroj: Journal of Applied Geodesy; Jun2017, Vol. 11 Issue 2, p115-121, 7p
Abstrakt: In Hungary, the high loess bank of the River Danube in Dunaszekcső has been moving with varying rate since 2007. On the high bank a geodetic monitoring network was established in September 2007. At the same time two borehole tiltmeters and later two ground water level sensors were also installed. The high-sensitive tiltmeters made it possible to study the relationships between the small tilts of the high bank and the ground water levels and the water level of the River Danube. Results of the multiple regression analysis between tilt components and water levels showed that the temporal variation of the regression coefficients is in close connection with the stability of the high bank. The investigations also showed that the movements are in very strong connection with the variation of the ground water level and less depend on the variation of the water level of the River Danube. The characteristic tilt processes, 3-4 weeks before large movements, and the slope stability changes inferred from the relationships between tilts and water level variations can be useful for early warning of landslides. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index