粮食是人类赖以生存的物质保障,因此粮食安全的意义更加突出和重要。成熟后的玉米含水率大约在25%-30%,甚至会达到36%左右。自然干燥后自然水都在15%-17%,作为种子含水率不能超过13%。玉米籽粒仓储的安全含水率标准为13%,最多不超过14%。据统计,每年因气候潮湿,湿谷来不及晒干或未达到安全水分造成霉变、发芽等损失的粮食高达5%,粮食损失重量高达200亿公斤。玉米收获时的含水率较高,因此玉米收获后不能安全外运和贮藏,通常要通过机器烘干,将玉米含水率降到安全贮藏水分才能入库。但是新收获的玉米在干燥塔干燥过程中和在粮仓内储存粮食时却发生过很多仓桶开裂或崩塌的事故,这正是由于粮仓效应导致的。为避免此类事故发生所带来的经济损失和提高干燥效率,对粮仓效应进行研究并设计良好的仓体结构是十分必要的。 Food is the material guarantee for the survival of human beings. Therefore, the significance of food security is even more prominent and important. Mature corn moisture content of about 25% -30%, or even up to 36%. After natural drying of natural water are 15% -17%, as the seed moisture content can not exceed 13%. Corn grain storage safety standard moisture content of 13%, up to not more than 14%. According to statistics, the annual loss of grain due to mildew, germination and other causes is up to 5% due to the humid climate, wet or dry valley or lack of safe moisture, and the weight of food loss is as high as 20 billion kg. Corn harvest moisture content is higher, so after harvest corn can not be safely transported and stored, usually through the machine drying, the moisture content of corn reduced to safe storage of water storage. However, freshly harvested corn experienced many cracking or collapsing barrels during drying of the drying tower and during the storage of grain in the silo, which is caused by the silo effect. In order to avoid economic losses caused by such accidents and improve the drying efficiency, it is necessary to study the granary effect and design a good warehouse structure.