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2013年4月20日发生的7.0级芦山地震造成了巨大的灾难,给灾区的燃气系统也造成了严重的破坏。选取震中芦山县燃气系统的破坏作为典型震害来进行研究,介绍了地震前后芦山县燃气系统的功能状态及恢复情况,重点分析了长输管线、庭院管道、城区主干网、燃气门站设施和燃气公司办公建筑及设施等各方面的震害,其特点是长输管线、地上入户管线和燃气公司的办公建筑设施等破坏比较严重;另外由于地面沉降、山体滑坡、塌方、保坎掉落、滚石等原因,致使管道损坏造成的次生灾害较为严重。最后针对该次地震中燃气管网的破坏特点和原因进行了初步分析,给出了一些燃气系统建设的改进建议与防灾对策。
The magnitude 7.0 Lushan earthquake on April 20, 2013 caused a huge disaster and caused serious damage to the gas system in the disaster areas. The damage of the gas system in Lushan County during the epicenter was selected as a typical seismic hazard. The functional status and recovery of the gas system in Lushan County before and after the earthquake were introduced. The long-distance transportation pipeline, courtyard pipeline, urban backbone network, gas gate station facilities and Gas companies office buildings and facilities in all aspects of the earthquake damage, which is characterized by long-distance pipeline, on-site household pipeline and gas company’s office buildings and other facilities more serious damage; the other due to land subsidence, landslides, landslides, Bao Paul fall , Rolling stones and other reasons, resulting in pipeline damage secondary disasters more serious. Finally, according to the preliminary analysis of the characteristics and causes of gas pipeline network destruction in this earthquake, some suggestions for improvement of gas system construction and disaster prevention measures are given.