Author(s): Sanjay Giri; Eric A. Stern; Malika Ikramova; Mohammad A. Anwer; Aksulu Kushanova

Linked Author(s): Sanjay Giri

Keywords: Tuyamuyun hydrocomplex (THC); Sediment management; Beneficial reuse; Dams; Reservoirs

Abstract: We first have carried out a comprehensive review of the previous studies and data available as well as a rapid analysis of the sediment-induced problems at the Tuyamuyun Hydro Complex (THC). The review of the current state of the THC watershed system has revealed that the sediment-induced problems at the Channel (Ruslovoe) reservoir of the THC are rather severe and need to start being addressed. The sedimentation of the reservoir has resulted in not only storage loss but also has increased the risk for the safety of the populace and the inwater dam structures. We have categorized the problems as per their impacts and the urgency to address them. Accordingly, the measures have been characterized in two categories based on their types and scale. The 1stcategory problem is related to the large deposition near the headworks (intakes and spillways) adversely affecting the functionality and safety of the structures (e. g., hydropower and canal operation) as well as the safe flood passage. This problem requires urgent planning and action as well as the short-term need to address critical infrastructure (deterioration and eventual replacement) including regularity that can be executed speedily within the limited investment and resources. The 2nd-category problem is related to storage loss of the Channel reservoir. This requires a proper scoping study, large-scale planning, feasibility study, basis of design, and execution with a long-term strategy (demanding large investment and resources). Particularly for addressing the 1st-category problem, we have proposed a technical concept and framework that details a comprehensive sediment management program that integrates the beneficial reuse of sediments.

DOI: https://doi.org/10.3850/978-90-833476-1-5_iahr40wc-p1263-cd

Year: 2023