National Environmental Monitoring of the Slovak Republic - Part Geological Hazards

Zaczek, Y.; Lambert, Nicolas

doi:10.1007/978-3-540-39918-6_72

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is usually done by experience, based on the observation of drill core samples, or the actual slip surface zone can be well located by in-depth displacement using inclinometric measurements, as in the case Where c ′ and φ′ are the effective cohesion and the effective angle of internal friction; γ is the unit weight of soil; z is the thickness of soil above the slip surface; and h 1 and h 2 are the maximum groundwater levels for selected scenarios 1 and 2. The temporal variability of pore water pressure in the Veľká Čausa landslide was assessed using data from 18 boreholes monitored over a period of 7 years (Klukanová and Liščák 2004;Wagner et al 2002). Maximum groundwater level, which is defined as the depth of groundwater level nearest to the ground surface, within the landslide area varies from 0.04 m (boreholes VC-13 and M-13) to 15.30 m (borehole VC-10).…”

Section: Unit Weightmentioning

confidence: 99%

Landslide hazard zonation by deterministic analysis (Veľká Čausa landslide area, Slovakia)

Jelínek

Wagner

2007

Landslides

View full text Add to dashboard Cite

Landslide hazard zonation by deterministic analysis (Veľká Čausa landslide area, Slovakia)Abstract A practical application of a simple and economical solution to landslide hazard zonation based on slope stability analysis was carried out in the Veľká Čausa landslide, Horná Nitra region, central Slovakia. The region is prone to different types of slope deformation controlled by geological structure, physical and mechanical properties of materials, complicated hydrogeological setting, undulating morphology, and man-made influence. Taking into consideration the cause of the landslide, identified as groundwater change, two scenarios of landslide activity have been investigated. Scenario 1 considers the maximum groundwater level recorded from March 1995 to October 1998, corresponding to the period starting from the most recent landslide activity up to the end of remediation work. Scenario 2 considers the maximum groundwater level recorded from November 1998 to December 2004, after the remediation works, and corresponding to the actual situation of the landslide. It has been found from this study that slope angle has the highest influence on landslide instability in the Veľká Čausa landslide. Therefore, high resolution Digital Elevation Model (DEM) is essential for obtaining reasonable results. In addition, an appropriate selection of the model input parameters (e.g., shear strength) is very important. The validation between the calculated landslide hazard zonation map and results of monitoring survey were examined. The results show moderate to good agreement with the inclinometric and geodetic measurements. It was also verified that the most active part of the landslide is the north-western side.

show abstract

Section: Unit Weightmentioning

confidence: 99%