Reservoir Operation On The Reservoir Bank Collapse And Buildings Damaged

Reservoir sediment erosion and deposition is an important factor of the collapse of reservoir banks and building in the destruction, and the reservoir scheduling on the effects of sediment erosion and deposition can not be ignored. In this paper, the manner in which different reservoir scheduling sediment erosion and deposition patterns arising from the collapse of the reservoir banks and building damage.Reservoir for water flow and sedimentation characteristics of the reservoir to the physical model will be generalized to deal with the construction of long-1.2m, width 0.4m, the 0.15m high glass tank model, observed under different reservoir operation, changes in reservoir sediment erosion and deposition patterns. Preliminary study on the flow and storage in different operation modes of the different reservoir conditions, the reservoir sedimentation patterns and changes of river bed erosion and collapse of the reservoir bank erosion damage buildings.Will highlight the advantages of three-dimensional calculation of the finite volume method, when Renault's two-turbulence k-s model to simulate the sediment particles Eulerian two-phase model combining these three models, in view of the reservoir Generalizability model three-dimensional numerical simulation of water and sediment. Calculation includes the area of the library of simulated water flow and sediment-laden flow bedload movement simulation of the reservoir will come under different conditions in the sedimentation patterns. By comparison, the calculated results coincide with the measured results.Physical model test results and simulation results have proved the conclusions:(1) sediment in the same conditions, the extent of the reservoir sediment washed with water storage increases. When inbound traffic is greater than 0.073 m3/s, it is easy to form a gate before the deposition, the formation of erosion on both sides of the middle flat sediment deposition patterns, which form so that the mainstream focus on the central reservoir to both sides of silt and sediment in the central reservoir the formation of deep, to protect the reservoir bank stability and to avoid erosion damage to the building of positive significance; When inbound traffic is less than 0.073 m3/s, it is easy to form a deposition, and easily print the form on the Island river siltation, erosion or both sides of the middle of siltation, which deviated from the mainstream of the form so that the central reservoir was oriented on both sides of the slope on the reservoir banks extremely detrimental to a stable, easy to damage caused by the collapse of reservoir banks. (2) in the same water and sediment conditions, the different ways to open the gate directly affect the location of the reservoir sediment erosion and deposition, as well as flow distribution. Side gates open hole to run the reservoir, sedimentation in the reservoir area is easy for the side of body-oriented, mainstream-oriented and a bank or the two sides, the siltation of the reservoir bank stability patterns, the formation of reservoir banks vulnerable to the collapse of the erosion damage. 3) No matter what the conditions of incoming water and sediment in the test papers under the condition of the Treasury from the intake area from 0 to 0.1m to form the middle of erosion prone area, and sediment deposition to the two sides of the strait, along the bank of the stability of this region, the building is not easy been destroyed; Treasury intake area from 0.2 to 0.3m easy to form the middle of the region on both sides of scouring the state of deposition, erosion along the bank of this region a serious, easy to damage caused by the collapse of reservoir banks; Treasury intake area from 0.4 to 0.6m regional erosion prone intermediate state formed, sediment deposition to the two sides, erosion trends and away from the inlet region is similar to 0 to 0.1m.(4) The sedimentation in the reservoir area and the channels change in the law of red sand timely scheduling optimization, reasonable Sluice gate open red sand row, to reduce sedimentation, protection of bank slope stability and to avoid erosion damage to the building have positive.For A Hai electric power station on the overall hydraulic model with the frequency of floods of different scheduling methods, the hub of flood effects, power plants and plant security situation in the lower reaches of the river; reservoir sedimentation upstream of the situation developed into a Lassa test analysis, a reasonable set of flushing holes to prevent clogging gate accidents as well as the sediment in the reservoir area of the red emission play an important role in the reservoir so as to provide more optimal scheduling of reference.