The Dividing Flood-period And Reservoir Operating Rules Research In Zhanghe Reservoirs

The dividing flood-period, design flood and reservoir operating rules, is usually meeting in engineering design, construction and production. This thesis is applied nowadays each of world latest theories - Fractal theory, and use to calculate dimension to divide flood-period first time. The adoption synthesizes discharges various paths of etc. calculate to design the flood. Analyzed the Zhanghe reservoirs characteristic establish the double reservoirs uniting-operating rules.The full thesis is divided eleven chapters. The first chapter is preface, to elucidation bring upping of the topic, to present research condition important meaning in domestic and international. The second chapter is basic circumstance for introduction Zhanghe valley and Zhanghe reservoirs. To explain the Zhanghe reservoirs are mainly made up of both the Guangyinsi reservoir and the Jigongjian reservoir. The water resources is more lack, and undertake the downstream flood control mission at the same time. The third chapter is basic hydrology data for introduction of this thesis using .Elucidation collections, sorting, analyzed 16 precipitation stations,6 hydrology stations,2 water-level stations and 1 evaporation stations, series length about 40 years. It suffices to show the data foundation. The 4th chapter is one of most chapters this thesis. It make sure how divide flood-period. First, the statistics is usually adopted to analysis flood divide the period as comparison result. Then, the fractal theory is creatively applied to divide flood-period. To analyze the hydrology phenomenon the characteristic, to choose the capacity dimension and resemble dimension of method, to calculation dimensions for the years biggest discharge series of the day the sample in both aspects of space rule and the time rule. When dimension is close, the time period is the same flood period. It breakthrough apply fractal theory to divide flood-period. The 5~6th chapter calculate the design flood in various flood-periods. According to the norms and the mature theories, investigate to adopt the new path, design the flood in both dam site and enter reservoirs .The design point-rain is instead of thedesign area-rain. Adopt the design area-rain , the design discharge path and the new path of synthesize discharge , etc 4 kinds of paths analyse and calculate design flood. The 7th chapter establish flood regulation and routing model in the reservoirs. Sophisticate the construction characteristics to set out, establish the function relation from the research reservoirs. The 8th chapter research flood periods( development) control water level To analyze the each of the Quzhang river downstream flood-control ability makes certain that main flood- period of the control the water level is 121.90m, advance flood-period of the control the water level is 123.20m, behind flood-period of the control the water level is 123.50m.The 9th chapter research reservoir operating rules The 10th chapter analysis compute economy benefit because divided flood period. The 11th chapter give the summary, bring upped the outlook.In a word, this paper mostly research in to divide flood-period, to design the flood about various flood -period, to plan reservoir operating the rules etc. Method forerunner, contents used enrich, and the result is dependable. Engineering for design, construction, operation and other reservoirs have already set up will store more rain-flood resources, develop the flood control performance and promote the beneficial and abolish the harmful. It may provide reference.