采矿和石油工程学院的原料工艺系已研究出一种能预告均匀跳汰床层中孔隙度分布的数学模型。若知道了均匀跳汰床层中孔隙度的分布，就可与一种密度的矿粒（与床层颗粒的密度不同）的沉降速度联系起来，因而成为跳汰分层的一种模型。为了测定跳汰床层中孔隙度的分布，在光吸收技术的基础上设计出一种方法。 The Department of Materials Science at the School of Mining and Petroleum Engineering has developed a mathematical model that predicts the distribution of porosity in a uniform jig bed. Knowing the distribution of porosity in a uniform jig can be correlated with the settling velocity of a dense mineral particle (which is not the same density as the bed particles), and thus becomes a model for the stratification of the jig. In order to determine the distribution of porosity in the jig bed, a method based on light absorption technology was devised.