干旱区平原水库消减水面蒸发试验研究

为减少蒸发造成的干旱区平原水库水量损失,进行了苯板覆盖水面消减蒸发的节水试验。试验分别采用蒸发池面积的25%、50%、75%、100%的苯板覆盖水面以探析不同面积条件下苯板对蒸发的消减规律。结果表明,不同面积苯板覆盖条件下,分别减少了23.85%、39.63%、55.54%、63.85%的蒸发水量。为探索苯板实际应用的可行性,在水库进行了实际铺设研究。研究表明,苯板在合理铺设的情况下,可以抵抗一定风浪作用,进而达到消减平原水库无效蒸发的目的。本实验对提高干旱区水资源有效利用率和水资源调配能力具有重要意义。

Experimental study on reduction of water surface evaporation of plain reservoir in arid region

In order to reduce the water loss of the plain reservoir in arid region caused by evaporation，a water-saving experiment for reducing evaporation by covering water surface with benzene board is made. In the experiment，the coverages of benzene board of 25%，50%，75%，100% on the water surface of the evaporation pond are respectively adopted，so as to research the law of the benzene board for reducing the evaporation under the conditions of various areas. The result shows that the evaporated water is reduced by 23.85%，39.63%，55.54% and 63.85% respectively under the conditions of various coverages of the benzene board. For investigating the feasibility of the actual application of the benzene board，an actual placement research is made on a reservoir. The research shows that the benzene board can resist certain storm wave actions under the condition of a reasonable placement of the board，and then get the target to reduce the uneffective evaporation from plain reservoir. This experiment has an important significance for enhancing both the effective utilization rate and the allocation capacity of water resources within the arid regions.