It reveals the stress field,displacement field and plastic deformation caused by freezing and expansion of the migrating pingo and presents the oil pipe bending deformation caused by t.

• 青藏高原北部常年冻土区沿活动断裂发育有移动冰丘,其对输油管道、桥梁、涵洞等工程设施具有破坏作用。