[PDF] Top 20 Operation Results of the Koshibu Dam Sediment Bypass Tunnel Completed in 2016

... completion of the SBT, we carried out a total of eight bypass discharges, twice in 2016, three times in 2017 and three times in ...2018. In this paper, we ... See full document

... Introduction Sediment and flow are essential elements of river ecosystem as they form bars, which are the basis of diverse river habitats for aquatic organisms and ecosystem ...to ... See full document

... habitats of some taxa because the addition occurs alongside high flow, mimicking natural ...Where sediment addition recovers particular taxa, its effects may be propagated to higher trophic levels, ... See full document

... at Koshibu SBT. Koshibu SBT is one the largest SBTs in the world completed in 2016, which measures 4,000 m, ...% of length, width, height, and inclination, ... See full document

... and the turbidity was indirectly monitored, and the SSC measurements could not be used directly for dam ...Measurement results and method of gate operation The present ... See full document

... ensure the sustainability of hydropower facilities, reservoir sedimentation is one of the most significant ...problems. Sediment management purposes in J-Power's reservoirs are ... See full document

... study, the long term effects of sediment supplied from a bypass tunnel on controlling algae were estimated by comparing algal biomass activity in the presence and absence ... See full document

... Conservation of stream ecosystems at downstream of dams often requires long-term, sequential restoration ...Five sediment additions through a sediment bypass tunnel were ... See full document

... reasonable results could be obtained by eliminating the lower limit for tunnel ...re-evaluating the applicability of sediment bypass tunnels based on this determination, ... See full document

... Abstract Sediment Bypass Tunnels (SBTs) are a sediment routing ...floods, sediment-laden water is conveyed through the tunnel to the dam ...First of all, ... See full document

... Sluicing tunnel, High-speed water flow, Energy dissipation arrangement 1 Introduction The Wushe reservoir was completed in 1959, which initial storage capacity was 150 million cubic ...meters. ... See full document

... Abb.5: the plan layout of tunnel route Abb.6: the plan layout of intake “Integrated Sediment De-silting Strategy of the Deji Reservoir ” started at the 3 ... See full document

... selection of the appropriate tunnel capacity and regulating rule represents a trade-off between the sediment management benefits achieved and the flow-regulation and power ... See full document

... drawdown sediment flushing. As to sediment sluicing, Saigo and Ouchibaru dams in Mimi river are newly started to implement coordinated sediment ...Upgrading of spillway gate will be ... See full document

... The sediment bypass tunnel, excavation, sediment replenishment and hydraulic desilting operation are major strategies for reservoir sediment ...However, the ... See full document

... Diagram of Reservoir and SBT Operations Considering Real-time Sediment Inflow Prediction incorporate these new rainfall forecast approaches into sediment inflow ...observation. Sediment inflow ... See full document

... Taiwan in 2015, the landslide area has been increased from ...Ha in the upstream of Xindian River in Wu-Lai ...district. The sediment deposition in ... See full document

... from the Solis SBT indicate that the BE strongly depends on the operational regime of both the SBT and the ...increase the BE, the SBT and reservoir operations need ... See full document

... pipe, the constructors need to excavate the tunnel and rock slope ...For the pipe weighing up to 1,500 tons, how to transport and accurately connect to the tunnel is also another ... See full document

... Percentages of coarse sand and fine sand at section 20 to 31 of Shihmen Reservoir According to the annual dredging work for Shihmen Reservoir, it is estimated that the dredging capacity ... See full document