Simulation Study on Reservoir Sedimentation
|關鍵字:||水庫淤積;顯示有限解析法;二維淺水波模式;Reservoir Sedimentatoin;Explicit Finite Analytic;2-D Shallow Water Model|
The reservoirs in Taiwan are threatened by the upstream steep-slope river flows, weak geological conditions, and improper human developments, which result in tremendous sediment transport rate. On the premise sustainable utilization of existing reservoirs with the difficult situation of construction of new reservoirs, it is important to study reservoir sedimentation and the results can be useful for the decision making of desilting strategy. The empirical area-reduction method and the 1-D HEC-6 and GSTARS2.0 models were adopted for the sedimentation simulation of Ta-Pu Reservoir, which is a reservoir with the main objective of irrigation. The preliminary simulation results show that it is effective to execute the hydraulic desilting in Ta-Pu Reservoir. A 2-D explicit finite analytic model then was adopted and the results show that it can more accurately simulate the spatial distribution of the deposition in the reservoir. Finally, the 2-D model was used to simulate the long-term sedimentation in Ta-Pu Reservoir. It can be seen that the original operation curves could have the space to be improved.
|Appears in Collections:||Thesis|