Experience in operating structures of Pamir hydroelectric stations: Fid-Bau Portal

Experience in operating structures of Pamir hydroelectric stations

El'manov, B. A. / Frolov, V. A.

Conclusions The experience of operating the Pamir hydroelectric stations shows the general reliability of their use for supplying energy to remote regions; this experience must be taken into account not only when designing and constructing hydroelectric station in the mountainous regions of Pamit but also in other regions of the country.Hydroelectric stations operating in remote, difficultly accessible regions should be highly reliable, especially against the effect of natural calamities. This reliability should be provided by a thorough study of plants with the use of model investigations and high quality of construction.The experience of operating the Pamir hydroelectric stations leads to the following specific recommendations:As a rule, under the complex conditions of Pamir, especially in areas subject to mud flow, rock fall, and avalanches, the diversion canals should be enclosed, and in the Eastern Pamir, closed over the entire length to avoid prolonged forced shutdown of the stations during intense shuga flows.To protect intakes at the headworks from disastrous discharges occurring upon breakthrough of lakes formed by the damming of rivers by snowslide and mud flows, it is recommended to construct at the intakes deflector walls rising above the normal pool level;The personnel operating hydraulic structures of the Pamir stations should be provided with small mechanized equipment for controlling bed and suspended loads, mud flows, snow, and ice.Both in the Eastern and Western Pamir long downtimes of the stations may occur owing to unfavorable natural phenomena; therefore, they should have a backup—a diesel-electric station provided with fuel to last at least two months.