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开展城市地下管线普查,建立地下管线信息系统,目的是提高城市规划建设科学化管理水平。其成果是长效资源,必须要真实反映地下管线的现状。城市管线建设中经常铺设顶管管线和电信类空管管线,顶管管线埋深变化大,通常在弯曲度大的区段管线埋深很大,使用管线仪一般很难探测该区段管线位置,电信类空管管线中无金属线存在,使用管线仪无法探测。
To carry out urban underground pipeline census, the establishment of underground pipeline information system, the purpose is to improve the scientific management of urban planning and construction. The result is long-term resources, we must truly reflect the status of underground pipelines. Pipeline and telecom pipelines are often laid in urban pipeline construction. The depth of pipe jacking varies greatly. Generally, pipelines in large sections are buried deeply, and it is generally difficult to detect the pipeline location by pipeline instrumentation , There is no metal wire in the telecommunication empty pipe line, and it can not be detected by the pipeline meter.