河流穿越管道悬空段稳管方法综述

A Summary of the Stabilizing Method of the Suspended Section for River Crossing Pipeline

摘要: 随着我国油气管网建设的发展，油气长输管道建设体量越来越大，但与此同时，穿越河流等特殊地段的长输管道随着建成年限的不断增加，由于自然冲刷或者人为因素的影响损坏程度日益增大，管道裸露悬空段失效是其主要因素。本文基于河流穿越管道段极限状态机理研究，考虑屈服破坏、振动破坏、疲劳破坏三种失效形式，提出针对悬空段长度、悬空段高度、周围水流速度、土体弹性模量等影响因素的悬空段稳管方法，考虑各方法适用性与经济性提出河流穿越管道悬空段稳管决策，并提出多种方法联合实施及管道监检测建议，为不同情境下河流穿越管道悬空段的安全维护提供理论与技术支持。

Abstract: With the development of China oil and gas pipeline network construction, the construction volume of long-distance oil and gas pipelines is getting larger, but at the same time, the long-distance pipelines crossing special lot such as rivers are increasing with the construction period, and due to natural erosion or human factors the degree of damage is increasing day by day, and the failure of the suspended section of the pipeline is the main factor. In this paper, based on the study of the limit state mechanism of the river crossing pipeline section, considering the three failure modes of yield failure, vibration failure and fatigue failure, this paper proposes the suspended section for the influencing factors, such as the length of the suspended section, the height of the suspended section, the velocity of the surrounding water flow, and the elastic modulus of the soil exposed pipe stabilization method, considering the applicability and economy of each method, puts forward the decision of stabilization of river crossing pipeline suspended section, and puts forward a variety of methods for joint implementation and pipeline monitoring and testing recommendations to provide theory and technical support of safe maintenance for river crossing pipeline suspended section in different situations.