塑性形变压力是岩石由弹性状态转变为塑性状态所产生的压力。
Plastic deformation pressure is the pressure caused by changing the status of rock from elasticity into plasticity.
当埋深较大时，在中墙顶部预留适当的变形量，可以有效减小中墙承受的形变压力。
When buried depth is greater, leaving proper deformation space above the middle wall can effectively reduce the deformation pressure supported by the middle wall.
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