Impact of 3000-t blast on unstable slopes near the Kambarata-2 HPP site, Kyrgyzstan

Abstract

Gravitational mass movements on steep slopes (rockslides, landslides, rock falls) resulting from strong earthquakes could initiate multi-stage (synergistic) geohazards providing threat to large hydraulic facilities in the mountainous areas. The powerful explosion was performed to create blast-fill dam of the Kambarata-2 hydraulic power plant (KHPP-2) on the Naryn River upstream from the Toktogul reservoir (Kyrgyzstan). Its impact on the potentially unstable slopes at the construction site and its vicinities was studied. It would help to assess long-term slopes' stability and to develop measures that have to be undertaken to prevent large-scale slope failures at the construction site and reservoir area and their negative consequences. In this work, we present the landslide risk evaluation of the Kambarata- 2 hydraulic scheme performed within the frames of the NATO SFP LADATSHA Project. © Springer-Verlag Berlin Heidelberg 2013.