What are the process items of sewage pipe plugging construction process?
1、 Construction process:
In subgrade filling section, the construction of pipelines and inspection wells shall coordinate with subgrade filling. When the subgrade filling is 0.5 higher than the top of the sewage pipe, the trench shall be opened first, the sewage pipeline and inspection well shall be buried, and then the subgrade construction shall continue. When the subgrade is filled to the bottom elevation of graded gravel layer, the rainwater pipeline and inspection well shall be constructed. Mechanical excavation of pipe trench, slope 1:0.25. Subgrade excavation section, road trench excavation, pipe trench excavation, and stop the construction of sewage and rainwater pipes and inspection wells. Mechanical excavation of pipe trench, slope 1:0.25, mechanical lifting pipe in place. After the excavation of the pipe trench, it is necessary to stop the measurement of the foundation bearing capacity of the trench. The heavy compaction method is used to stop the measurement. The foundation bearing capacity can meet the requirements of the scheme. If the foundation bearing capacity cannot meet the requirements of the scheme, it is necessary to stop the treatment by backfilling the gravel cushion. After the treatment, the foundation bearing capacity can be determined by stopping the foundation bearing capacity. Measuring and setting out, rain and sewage pipelines, foundation piles shall be set every 20m, drainage pipelines shall be set out, and foundation piles shall be set every 10m. The foundation pile shall be set at the pipeline inspection well and the pipe diameter change, and the guard pile or control pile shall be set if necessary. After the drainage pipeline is leveled, the pipeline profile drawing and water pipeline measurement shall be made, and the standard measurement record book shall be available for detailed records.
After the bearing capacity of the crushed stone cushion is measured to meet the requirements, the formwork will be erected on the cushion according to the requirements of the scheme, and the concrete sleeper foundation will be poured. C15 concrete will be used as the concrete, and the pipe laying will not be stopped until the concrete reaches the strength of the scheme.
After the sleeper foundation concrete reaches the strength of the scheme, the pipeline shall be hoisted onto the sleeper foundation, and its orientation shall be fixed with red bricks to ensure that the base lines of the two pipelines are the same, ensure that the pipeline axis is on the same continuous line, and do not allow the pipeline base lines to be intertwined.
After the pipeline is laid out, the pipeline interface line and formwork equipment line shall be marked on the sleeper foundation. When erecting the formwork, it is necessary to stop reinforcement, and adopt methods to avoid mortar leakage of the formwork. When stopping the construction of the pipeline interface greater than 500, the steel wire mesh shall be fixed on the concrete pipe according to the requirements of the scheme.