The experimental results suggest that the chalk behavior can be modeled in terms of elastoplastic model with two plastic deformation mechanisms:plastic compaction(pore collapse) and plastic shearing.

• 白垩是一种典型的多孔岩石,三轴试验研究成果表明白垩具有2种塑性力学机理:塑性压缩(孔隙坍塌)和剪切破坏。