埋地给水管道安装的施工方案（Construction scheme of buried water supply pipeline installation）.doc

埋地给水管道安装的施工方案（Construction scheme of buried water supply pipeline installation） This article is contributed by kfkfyym DOC documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. On the underground water supply pipeline installation construction scheme of 2009-09-18 09:31 1 in the construction process of positioning line, trench excavation, trench support, outdoor underground pipe, pipeline installation, pipeline based outdoor pipe and piping, pipe piers, pipeline inspection and pressure test, trench backfill and acceptance 2 construction methods and points 1) positioning to determine the position of the center line of pipe line according to the coordinates of the location of the construction drawing design, fixed on the ground with the Longmen plate, and Longmen plate to measure the center point elevation respectively, as the slot, piping on Longmen board to be properly protected, generally not more than 10 meters distance. At the same time, the pipeline center pile and the leveling point are all set by the translation method, which is convenient for observation and use outside the pipeline construction scope. 2) trench excavation A., when the pipeline measuring alignment line is checked correctly, the trench excavation can be carried out. The trench is excavated with mechanical, and the smaller part can be powered by manpower. After the B. trench is excavated, the sump sump shall be dug separately, and the sump shall be removed by the sewage pump. C. excavation pipe ditch bottom minimum width: note 1.: table D for pipe outer diameter. 2. when the support groove is arranged at the trench depth within 2 meters, the ditch width increased 0.1 meters; at a depth of 3 meters, width of trench bottom increased 0.2 meters; 3. by mechanical excavation groove, the groove width according to the size of the cutting excavation machines and decide, but not less than the specified value. 3