稻谷堆弹性模量的实验测定与研究  

DETERMINATION AND RESEARCH ON ELASTIC MODULUS OF PADDY PILE

作　　者：陆琳琳[1] 石翠霞[1] 程绪铎[1] 

机构地区：[1]南京财经大学食品科学与工程学院

出　　处：《粮食储藏》2011年第3期31-35,39,共6页Grain Storage

基　　金："十一五"国家科技支撑计划项目(项目编号:2009BADA0B04-5);南京财经大学科研基金项目(项目编号:A2010025)

摘　　要：利用TSZ-6A型应变控制式三轴仪进行三轴实验,测定围压分别为50 kPa、100 kPa、150 kPa、200 kPa时,稻谷堆(水分为11.89%w.b,13.55%w.b,15.73%w.b,17.62%w.b)的弹性模量,同时研究围压和水分与稻谷堆弹性模量的关系。实验结果表明:对于水分范围为11.89%~17.62%w.b的稻谷堆,在围压为50 kPa^200kPa的范围内,其弹性模量范围为8.69 MPa^37.07 MPa。根据围压与稻谷堆弹性模量的关系可以拟合得到方程:y=Ax+B,其中,A、B为与水分有关的参数。在相同水分条件下,稻谷堆的弹性模量随着围压的增大而增大;在相同围压条件下,稻谷堆的弹性模量与水分没有显著的相关性。The elastic modulus of paddy pile（moisture contents 11.89%,13.55%,15.73% and 17.62% w.b） were measured by triaxial apparatus under the confining pressure of 50 kpa,100 kpa,150 kpa,200 kpa.The relationships among the elastic modulus of paddy pile,the moisture content and the confining pressure were investigated respectively.The experimental results showed that the elastic modulus of the paddy pile ranged from 8.39Mpa to 36.30Mpa while the moisture content was 11.89%～17.62% w.b and the confining pressure was 50～200kpa.According to the relationship between the confining pressure and the elastic modulus,the fitting equation was obtained： y =Ax ＋ B,where,A and B are the parameters of the moisture content.The elastic modulus of paddy pile increased with the increase of the confining pressure in a certain moisture content.The elastic modulus has no significant relevance to the moisture content in a certain confining pressure.

关 键 词：稻谷堆 弹性模量 围压 水分 

分 类 号：S511[农业科学—作物学]