Water-saving light concrete method for restraining water surface evaporation and technological formula thereof

Abstract

The invention provides a water-saving light concrete method for restraining water surface evaporation. In the method, light concrete slabs or blocks which can float on water are partially or completely placed on the water surface. The prefabricated water-saving light concrete slabs or blocks can resist wind, seepage, freezing and ageing, the thickness of the light concrete slabs or blocks is within 3 to 9cm, and the length and width are respectively controlled within 0.5 to 3m; when in prefabrication, steel bars are added and exposed to form ring shapes, all the light concrete slabs or blocks are connected by ropes, and the connection ropes are fixed on vertical piles beside a water pool (a reservoir) or in water. The invention belongs to a physical covering method, has the advantages of simple operation, low price and low maintenance cost, can resist wind, seepage, freezing and ageing, and is particularly applicable to evaporation reducing and water saving for the water surfaces of the water pool, the reservoir, a lake and the like.

Description

Technical field: [0001] The invention relates to a technology for suppressing evaporation on the water surface of reservoirs, pools and lakes, in particular to a water-saving lightweight concrete method for suppressing water surface evaporation and its technical formula. Background technique: [0002] In artificial water diversion and water storage projects in arid and water-scarce areas, water surface evaporation has caused huge losses, especially in arid areas, reservoirs, reservoirs, and lakes have a large exposed water surface area compared to the volume of stored water bodies, and the evaporation loss The volume of water often exceeds that used for production withdrawals. According to statistics, the water surface evaporation loss of local reservoirs in the North China Plain accounts for more than 30% of the total water storage capacity of the reservoirs. In the arid area of ​​Northwest my country, the annual water surface evaporation reaches 1500mm-2000mm, and the eva...

AI Technical Summary

Problems solved by technology

But at the same time, there are also great defects: the film formed by the chemical agent cannot reduce the absorption of solar energy by the water body, but inhibits evaporation while inhibiting the heat consumption of the water body by evaporation. In the uncovered water surface, the higher water temperature will lead to evaporation. increase; the effect of wind and waves often makes the film layer unable to maintain a good state, and the evaporation suppression effect is unstable and has too many limitations; chemical agents can make O 2 , CO 2 Through the membrane, the water body is harmless to plants and fish, but most of the chemical agents themselves are toxic or low-toxic

At present, high-density polyethylene cord, paraffin, polystyrene foam board (EPS), and polyethylene sheets are used to cover the water surface to suppress water surface evaporation at home and abroad, but the materials used have poor wind resistance, frost resistance, aging resistance and Problems such as low average inhibition rate