中缅油气管道跨断裂地震变形的GNSS观测

中缅油气管道工程是我国重要的能源战略项目，该工程沿线地质背景复杂、破坏性地震多发，尤其是在云南境内跨越的3条大断裂曾发生过7级以上大震，有再次发生破坏性地震的可能性，对管道安全有潜在威胁。中缅油气管道地震观测项目通过在管道与3条断裂交汇处布设3组GNSS观测点，观测地震可能引起的断层位错，进而估计管道可能的变形影响。基于观测数据，分析影响观测的因素及断层位错的观测误差。管道变形承受能力对比结果表明，GNSS跨断裂变形观测系统能够有效观测断裂的位错，进而估计其对管道产生的影响。

GNSS Monitoring of Cross Fault Seismic Deformation of China Myanmar Oil and Gas Pipeline Project

China Myanmar natural gas pipeline project is an important energy strategic project in China, the geological background along the project is complex and destructive earthquakes are frequent, in particular, the three major faults across Yunnan have experienced major earthquakes of magnitude 7 or above, and it is likely to happen again which is a potential threat to the safety of the pipeline. The China Myanmar natural gas pipeline seismic monitoring project monitors the fracture dislocations that may be caused by earthquakes by setting up three groups of GNSS observation points at the intersection of the pipeline and three faults, so as to estimate the possible deformation impact of the pipeline. Based on the observation data, this paper discusses the factors affecting the observation, analyzes the observation error of fracture dislocation. Comparing the deformation bearing capacity of pipeline, it shows that the built GNSS cross fracture deformation observation system can effectively monitor the dislocation of fracture, and then estimate the possible impact of this deformation on pipeline.