Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 1, pp. 259-265
Observing the progress of blasting operations and channeling in the area of the rock slide on the Bureya River
L.S. Kramareva
1 , E.A. Loupian
2 , Iu.A. Amelchenko
1 , M.A. Burtsev
2 , Yu.S. Krasheninnikova
2 , V.V. Sukhanova
1 , J.A. Shamilova
1 , A.V. Boroditskaya
1 1 Far-Eastern Center of State Research Center for Space Hydrometeorology “Planeta”, Khabarovsk, Russia
2 Space Research Institute RAS, Moscow, Russia
Accepted: 28.02.2019
DOI: 10.21046/2070-7401-2019-16-1-259-265
This report presents an analysis of satellite data on the area of blasting operations on the site of hill collapse and rock formation in the Bureya River bed opposite the confluence of the Middle Sandar River on December 11, 2018. The rocks that crashed into the Bureya River and completely blocked the channel significantly reduced the flow of water into the reservoir of the Bureyskaya HPP and caused the danger of flooding the Chekunda, Elga and Ust-Urgal settlements located upstream. By January 15, 2019, the water level difference at the upper and lower boundaries of the mound reached 6.5 m and continued to rise steadily. A decision was taken to partially clear off the mound and form a channel in it for water passage. According to satellite observations, blasting operations began on January 21, 2019. The work was carried out in the narrowest place of the mound formed after the landslide. On February 2, 2019, satellite images showed open water on both sides of the mound and a narrow stream. Water went through the channel on February 10. During further work, the channel was expanded and straightened. The channel has reached its current dimension by February 12. The water passing through the breach formed below the mound an extensive water opening that reached its maximum size on February 17–18. Currently, the free water zone has begun to decrease due to the beginning of ice formation processes. The decrease in the free water zone in the opening is connected with a decrease in the intensity of its passage through the breach. This is due both to a drop in the water level above the landslide and to a certain blockage of the channel and a decrease in its capacity. Partial release of the Bureya riverbed significantly reduced the water level difference between the upper and lower boundaries of the landslide and increased the flow of water to the reservoir of the Bureyskaya HPP. However, in the spring there is a risk of ice jams in this place and flooding upstream the river, which in turn could lead to flooding the Chekunda, Elga and Ust-Urgal settlements.
Keywords: Bureya Reservoir, Bureya River, Slope collapse, Earth observation satellite systems, Earth remote sensing
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