Abstract
A protruding part of rock mass No. 65 was considered to be potentially unstable according to calculations of waterside slopes stability of Irganayskaya HPP reservoir. The assessment of mass residual displacements after a strong seismic impact has been made to define if there is a necessity of carrying out work to improve the stability of rock mass. Three nonlinear dynamic models of the rock mass have been developed to assess residual shears of rock. The influence of input parameters on the results of calculations has been studied. A 3D model in linear definition was calibrated by the results of seismometer observations over mass quakes. The received values of maximum residual displacements in the rock mass after a seismic impact made it possible to define a hazard to head front structures of Irganayskaya HPP from rock mass No. 65 that is connected with a danger of the wave appeared during rock sliding into the reservoir.
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Acknowledgments
The authors express their thanks to collaborators of B.E. Vedeneev VNIIG O. K. Voronkov, Dr. of Geology and Mineralogy, and G. A. Motorin for their assistance in assigning and refining dynamic characteristics of rock mass and F. F. Aptikaev, Dr. Physico-Math. Sci., for presented design accelerograms selected according to the results of detailed seismic zoning.
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Prokopovich, V., Sozinova, T. (2013). Displacement Calculations of the Waterside Slope After a Seismic Impact. In: Margottini, C., Canuti, P., Sassa, K. (eds) Landslide Science and Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31319-6_8
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DOI: https://doi.org/10.1007/978-3-642-31319-6_8
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