Based on the mechanism of deformation of rocks, porosity-depth curves of rocks can be divided into tow periods as compaction and compression.

• 摘要根据岩石的变形机制，把岩石孔隙度的变化过程划分为压实和压缩两个阶段，岩石压实阶段的孔隙度呈指数规律变化，岩石压缩阶段的孔隙度保持为常数。