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综合分析了16条埋（涵）管多年运行后产生环向裂缝的实际情况，找出了埋管断裂的原因，提出了埋管轴向抗裂验算的计算方法，为理管轴向抗裂验算提供了理论依据．用本方法判别已建工程理管是否裂缝，精度在93％以上，说明本文提出的方法是符合实际情况的，因此本方法可用于工程设计．
This paper analyzes the actual circumstance of ring fracture after 16 buried pipes have been operated for many years, finds out the reason of buried pipe fracture, puts forward the calculation method of axial crack resistance calculation of buried pipe, Check provides a theoretical basis. This method is used to judge whether the cracked pipe is over 93%, which shows that the method proposed in this paper is in line with the actual situation, so this method can be used in engineering design.