随着经济的发展、城市规模的扩大和现代化程度的不断提高,作为城市生命线的地下管网也越来越庞大、密集,其种类也越来越繁多。以往国内绝大多数城市对地下管网缺乏系统的管理和长期的规划,从而导致全国范围内大大小小的管线事故频发,管线埋设重复施工情况严重。虽然根据《关于加强城市地下管线建设管理的指导意见》,所有县级以 With the development of economy, the expansion of urban scale and the continuous improvement of modernization, the underground pipe network, which is the lifeline of the city, is also becoming more and more large and dense, and its variety is also more and more numerous. In the past, the vast majority of cities in China lacked systematic management and long-term planning of underground pipe networks, resulting in frequent accidents of large and small pipelines throughout the country and repeated laying of pipelines. Although according to the Guiding Opinions on Strengthening the Management of Urban Underground Pipeline Construction, all the prefectures