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目前,我国尚未出台城市天然气埋地管道非开挖检验规程,而埋地管道检验同地面管道检验在检验设备和检验内容上有很大不同,大量在用城市天然气埋地管道使用状况不明,存在安全事故隐患。目前安徽省天然气埋地管道有千余km,管道投入运行至今未经过检验,安全运行状况不明。通过对某市10km天然气埋地高压管道首次非开挖检验的试点,摸索了埋地管道非开挖检验的方法和途径,保障了城市天然气埋地管道的安全运行。
At present, our country has not yet promulgated the trenchless inspection procedures for buried pipelines of natural gas in cities, and there is a big difference between buried pipeline inspection and surface pipeline inspection in the inspection equipment and inspection contents. Safety accident hidden danger. At present, there are more than 1,000 km of buried pipelines for natural gas in Anhui Province. Since the pipelines have been put into operation so far, they have not been tested and the safe operation status is unknown. Through a pilot project of the first non-excavation test of 10km high pressure natural gas pipeline in a certain city, the methods and ways of non-excavation inspection of buried pipelines were explored to ensure the safe operation of buried pipelines of natural gas in cities.