期刊
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
卷 46, 期 4, 页码 686-698出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijrmms.2008.10.007
关键词
Rock slope; Dynamic analysis; Earthquake; Newmark displacements; UDEC
资金
- Research Council of Norway through International Centre for Geohazards (ICG)
- Geological Survey of Norway (NGU)
- Norwegian Geotechnical Institute (NGI)
- Norwegian University of Science and Technology (NTNU)
- National Fund for Natural Damage Assistance and More Romsdal County
- Aaknes/Tafjord Project
The seismic stability of the angstrom knes rock slope, western Norway, was analysed by using the distinct element code UDEC (Universal Distinct Element Code). The slope poses a threat to the region as a sudden failure may cause a destructive tsunami in the fjord. The dynamic input was based on earthquakes with return periods of 100 and 1000 years, and in most models the input shear wave was a harmonic function (sine wave). Models with depths of the sliding surface up to 200 m and with ground water conditions derived from site investigations were analysed, as well as models with ground water conditions assumed from possible future draining of the slope. The analyses indicate that an earthquake with a return period of 1000 years is likely to trigger sliding to great depth in the slope at the present ground water conditions and that the slope will be stable if it is drained. The analyses also indicate that sliding is not likely to be triggered by an earthquake with a return period of 100 years at the present ground water conditions. (C) 2008 Elsevier Ltd. All rights reserved.
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