According to the characteristics of double wall corrugated filter well pipe and its failure,a calculation formula of its critical confining pressure was induced by using elastic stability theory.

• 针对双壁波纹塑料滤水管的结构及破坏特点，应用弹性稳定理论，推导了该种管材的临界围压力计算公式，并分析其影响因素，确定了实际耐围压能力。