多孔砂岩断裂产生形变带 ,而不是面状断裂面。形变带为薄的脆性剪切带 ,是压实和碎裂共同作用下形成的。形变带的形成会出现孔隙度和粒度减小现象 ,引起应力硬化和与初始带相邻的一个新的形变带产生合力。当新形变带形成 ,并且位移扩大时 ,间隔近的形变带加速发育。延续变形作 Porous sandstone fractures produce deformation bands, rather than planar fracture surfaces. The deformation zone is a thin, brittle shear zone formed by the combination of compaction and fragmentation. Formation of the deformation zone will result in porosity and particle size reduction, resulting in stress hardening and a new deformation zone adjacent to the initial zone. When a new deformation zone is formed and the displacement expands, the deformation zone near the interval accelerates development. Continuation of deformation for