摘要
为探究河西走廊地区浮球覆盖对水面蒸发抑制效果的影响,采用黑白两色PE浮球,7座长宽2 m、高1.5 m的塑料蓄水池作为蒸发器,研究不同覆盖率下的抑制蒸发效果和对水体温度产生的影响。采集试验数据并用GraphPad Prism进行相关性分析。结果表明,蒸发抑制率和覆盖率呈二次曲线关系,在88%、63%、38%、20%覆盖率下,88%覆盖率蒸发抑制效率最优,最大蒸发抑制率为71%,白球平均抑制蒸发效率比黑球高8%;虽然黑白两色浮球覆盖水面后,使水下温度分别增加2.67%、0.53%,饱和水汽压差分别增加4.89%、0.20%,会加快水面蒸发。但从材料老化性和降低工程运行成本看,选用PE浮球作为覆盖材料可行。
In order to explore the impact of floating ball coverage on the inhibition effect of water surface evaporation in Hexi Corridor,black and white PE floating balls,7 plastic reservoirs with 2 m length,1.5 m height are used as evapo-rators.The effect of inhibiting evaporation and water temperature under different coverage were studied.The experimen-tal data were collected and analyzed by GraphPad Prism.The results show that the relationship between evaporation inhi-bition rate and coverage rate is a quadratic curve.Under the coverage rate of 88%,63%,38%and 20%,the evaporation inhibition efficiency with 88%coverage rate is the best,and the maximum evaporation inhibition rate is 71%.The aver-age evaporation inhibition efficiency of white floating ball is 8%higher than that of black floating ball.Although the black and white floating balls covering the water surface increase the underwater temperature by 2.67%and 0.53%,and the saturated wa-ter vapor pressure difference by 4.89%and 0.2%,it will accelerate the evaporation on the water surface.In terms of material aging and reducing engineering operating costs,the choice of PE floating ball as the covering material is still feasible.
作者
顾嘉兴
周波
马瑞
田琨
吴建东
GU Jia-xing;ZHOU Bo;MA Rui;TIAN Kun;WU Jian-dong(College of Forestry,Gansu Agricultural University,Lanzhou 730070,China;Gansu Hydraulic Research Institute,Lanzhou 730030,China)
出处
《水电能源科学》
北大核心
2025年第8期11-14,123,共5页
Water Resources and Power
基金
水利科学试验研究与技术推广技术项目(24GSLK011)。
关键词
河西走廊
PE浮球
蒸发抑制率
蒸发驱动力
Hexi Corridor
PE floating ball
evaporation inhibition rate
evaporation driving force
作者简介
顾嘉兴(2000-),男,硕士研究生,研究方向为干旱区节水,E-mail:aa875729080@163.com;通讯作者:周波(1967-),男,正高级工程师、硕导,研究方向为梯田、淤地坝建设与水土资源利用,E-mail:652558531@qq.com。
