Location
New York, New York
Date
15 Apr 2004, 1:00pm - 2:45pm
Abstract
Results of slope stability analyses for an inferred slip surface in a landslide along the Columbia River in the State of Washington are presented. The numerical analyses were made using limit-equilibrium-based computer program SSTAB2 and a commercially available continuum-mechanics-based computer program, FLAC. For the known and best understood/estimated field conditions, results of SSTAB2 analyses indicate validity of the inferred slip surface. However, the same is not true with the results of FLAC. Reasons for the differences in results from the two essentially independent methods of analysis are discussed. Preference for use of one method over the other in studying occurrence of ground instability is indicated. Usefulness of the two methods of analysis in quantitative assessments of landslides is mentioned.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Chugh, Ashok K.; Schuster, Robert L.; and Rohrer, Peter M., "Numerical Assessment of an Estimated Slip Surface, Locke Island Landslides, Columbia River, South-Central Washington State, USA" (2004). International Conference on Case Histories in Geotechnical Engineering. 45.
https://scholarsmine.mst.edu/icchge/5icchge/session02/45
Numerical Assessment of an Estimated Slip Surface, Locke Island Landslides, Columbia River, South-Central Washington State, USA
New York, New York
Results of slope stability analyses for an inferred slip surface in a landslide along the Columbia River in the State of Washington are presented. The numerical analyses were made using limit-equilibrium-based computer program SSTAB2 and a commercially available continuum-mechanics-based computer program, FLAC. For the known and best understood/estimated field conditions, results of SSTAB2 analyses indicate validity of the inferred slip surface. However, the same is not true with the results of FLAC. Reasons for the differences in results from the two essentially independent methods of analysis are discussed. Preference for use of one method over the other in studying occurrence of ground instability is indicated. Usefulness of the two methods of analysis in quantitative assessments of landslides is mentioned.
