城市地下管线是城市基础设施的重要组成部分,是现代化城市高效运转的基本保证,更是维持城市正常运转的大动脉。张家口市作为河北省北部的重要城市,随着改革开放的进一步深入和经济的飞速发展,城市建设日新月异,而燃气管线的建设在生产生活乃至整个城市规划建设中的地位也愈来愈重要。2013年,随着张家口市天然气置换工程的圆满成功,全市主城区普 Urban underground pipeline is an important part of urban infrastructure, is the basic guarantee for efficient operation of modern cities, but also to maintain the normal operation of the city artery. As an important city in the northern part of Hebei Province, with the deepening of reform and opening up and the rapid economic development, the construction of Zhangjiakou city is changing with each passing day. The construction of gas pipeline is becoming more and more important in the production and living as well as in the urban planning and construction. In 2013, with the successful completion of the natural gas replacement project in Zhangjiakou City, the city’s main urban area of ​​Pu