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为了对地震区油气管道所承受的附加应力进行有效检查, 提出基于惯性导航技术的应变及位移检测方法, 可对油气管道全线进行有效检测, 及时发现管道位移和应变集中点.通过使用搭载惯性导航单元的内检测器对管道进行检测, 并与地面标记点、里程计进行组合导航数据融合得到精确的管道中心线坐标后, 进一步对管道弯曲应变进行计算, 可有效查找管道全线的应变变化及位移区域, 并能够检测应变及位移变化量.通过牵引试验验证了应变检测的正确性及数据重复性, 该方法为地震区长输油气管道的安全运行提供了有效保障.“,”In this paper, a strain and displacement inspection method based on inertial navigation technology was proposed to inspect effectively the additional stress on oil/gas pipelines in earthquake areas. By means of this method, the whole oil/gas pipeline can be inspected effectively so that displacement and strain concentration points of oil/gas pipelines can be discovered in time. After pipeline is inspected by the inner-detector which carries the inertia measurement unit (IMU), combined with odometer and surface marker for navigation data fusion, its accurate centerline coordinates is obtained. Then, the bending strain of the pipeline is calculated. Thus, strain change and displacement areas along the whole pipeline can be identified effectively, and strain variation and displacement variation can be detected as well. The correctness of strain detection and the reproducibility of data are verified by means of traction test. This method provides the effective guarantee for the safe operation of long-distance oil/gas pipelines in earthquake areas.