#IMC: September 14 - 18 2025

Long-term monitoring of a landslide

Assigned Session: FS 3.147: Monitoring, Assessment, and Multi-Scale Modeling of Landslides: Approaches for Hazard Analysis

Abstract ID: 3.13431 | Accepted as Talk | Talk/Oral | TBA | TBA

Matthias Toppe (0)
Spang, Christian (1)
Matthias Toppe ((0) Dr. Spang Ingenieurgesellschaft für Bauwesen, Geologie und Umwelttechnik mbH, Rosi-Wolfstein-Straße 6, 58453, Witten, , DE)
Spang, Christian (1)

(0) Dr. Spang Ingenieurgesellschaft für Bauwesen, Geologie und Umwelttechnik mbH, Rosi-Wolfstein-Straße 6, 58453, Witten, , DE
(1) Dr. Spang Ingenieurgesellschaft für Bauwesen, Geologie und Umwelttechnik mbH, Rosi-Wolfstein-Straße 6, 58453 Witten, Germany

(1) Dr. Spang Ingenieurgesellschaft für Bauwesen, Geologie und Umwelttechnik mbH, Rosi-Wolfstein-Straße 6, 58453 Witten, Germany

Categories: Monitoring
Keywords: Long-term monitoring, slope movements, inclinometer, extensometer, anchor force measurement

Categories: Monitoring
Keywords: Long-term monitoring, slope movements, inclinometer, extensometer, anchor force measurement

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In the 1980s, a large-scale landslide occurred during the construction of a bypass around the town Herdecke (NRW), which was stopped by backfilling and secured with prestressed anchors, soil anchoring and a complex drainage concept. A comprehensive measuring system was installed to monitor the slope movements. Since 2021, we have been recording movements using inclinometers, extensometers, anchor force measurements and groundwater measuring points. The lecture presents our experience in measuring and analysing these highly sensitive instruments and discusses challenges in data analysis. Particular attention is paid to the interpretation of long-term measurement series and the recognition of critical movement patterns. The results provide valuable insights for the geotechnical monitoring of slopes and their permanent stabilisation.

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