关键词: 浮板, 月平均蒸发量, 防蒸发系数, 节水效率, 平原水库

Abstract:

The inland arid region of China has rare precipitation but strong evaporation, it is important to alleviate the situation of water shortage through reducing the invalid evaporation of plain reservoir. Controlling the evaporation by the floating slab cover on the water surface of the reservoirs can improve the utilization rate of reservoir. Based on field measured data and climatological data in a whole non-freezing period, the regression equation of monthly average water surface evaporation and monthly average temperature of the northern Xinjiang Autonomous Region is established, and the monthly average evaporation and anti-evaporation coefficients by use of floating slab cover under different meteorological conditions are calculated; furthermore, the water-saving efficient by the floating slab cover is obtained. The analysis results show that the plate-group cover on the surface of reservoir can improve water-saving efficient greatly.

Key words: floating slab；average monthly evaporation, anti-evaporation coefficient；water saving efficiency, reservoir in plain