Research On Water Surface Inhibition Evaporation Technique On Tarim River Basin Reservoir

Xinjiang Tarim River basin "four does" plain reservoirs in irrigation area 76, is an important water source of agricultural production, but the Plains because of its water, the surface area of the reservoir, leakage loss of evaporation to reduce invalid plain water evaporation, increasing reservoir storage capacity, address the lack of water, will become an important solution to water shortage in southern area of artificial means of regulation. To reduce evaporation of plain reservoir in this paper, improving utilization of water resources of plain reservoir. On the basis of previous studies, this paper test bases and wavy in Tarim River basin reservoir laying in monomolecular film evaporation, combining the use of floating grid, further analysis of the practical feasibility of the program. Paper made the following conclusions:(1)Indoor and outdoor test Monomolecular Film are obtained the best filming of 3.83ml/m2 through four evaporation ponds laid single molecule film compared with the control ponds, dissolved oxygen content in the water body change in the range of 2.1~5.3mg/l, changes in turbidity in the range of 2.2~4.3NTU, changes in pH values in the range of 7~8.2, in the laying of large, little effect on the water.(2)Through large test data, established water evaporation model; through evaporation dish conversion method, and Dalton formula on evaporation pool of water evaporation for data of statistics calculation, on actual evaporation and calculation evaporation of compared, simulation out applies Yu this area of water evaporation calculation model; on established of water evaporation model for precision test and errors analysis, results showed that this times research of water evaporation model intends collection accuracy high, applicability strong, has is good using value.(3)The identified floating grid single molecular membrane combines the laying method. Comparative test bases floating grid plus Monomolecular Film and laying of single molecules in membrane evaporation, evaporation ponds evaporation rate changes periodically; joining floating grid and single molecular membrane resistance evaporation rates are significantly higher than the floating grid is not set evaporation pools of resistance rate of evaporation. Set the floating grid results show that water can effectively improve the resistance rate of evaporation of Monomolecular Film through data analysis to improve inhibition by 5%-19%.(4)Fixed scheme in a large area paved. In more waves reservoir actual laying floating network grid in the, compared analysis two species program of actual laying and mechanical calculation showed that, selection mixed soil set pile fixed floating network grid, wind speed reached 12m/s, floating network grid on will appeared local uplift or damage of phenomenon, anti-waves of effect poor; wind speed reached 18m/s, floating network grid basic completely damage; in selection, corner iron fixed floating network grid Shi, wind speed reached 16.7m/s, floating network grid in actual anti-waves in the no local damage or uplift of phenomenon, And integrity intact. Angle iron fixed floating grid solution is better than concrete piles fixed program.