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Sub-project, mechanical configuration plan name | Process, machine name, etc. Pij | Content |
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Construction preparations (P1) | Preparation of construction technical documents | (1) Drawing review. (2) Management requirements. (3) Technical disclosure. |
Engineering measurement | Measurement site and requirements. |
Construction site layout | Setting requirements for project department, mixing station, steel bar processing plant, construction access road, etc. |
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Process test (P2) | Test monitoring indicators | (1) Test items. (2) Measurement data requirements. |
Construction of the test section | (1) Filling test construction. (2) Earth-rock filling test construction. (3) Measurement method. |
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Subgrade filling (P3) | Substrate treatment | (1) Removal of base vegetation and backfilling of potholes. (2) Loosening and rolling of base soil. (3) Base test. |
Layered paving | Earthwork: (1) Fully vertical and horizontal layered filling. (2) Construction standards for inclined filling. Earth and stonework: Horizontal filling layer-by-layer. |
Leveling | The pusher is used for initial leveling, and the leveling is manually coordinated with the grader. The moisture content is controlled to 2%. |
Rolling | Filling: (1) Rolling parameters are according to the requirements of the test section. |
Compaction and fill level inspection | Earthwork: (1) Inspection of packing. (2) Layered compaction. (3) Compaction quality inspection. Earthwork: (1) Compaction quality inspection. (2) Compaction settlement difference detection method. |
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Subgrade excavation (P4) | Construction lofting | (1) Check the geological conditions. (2) Stake out the boundary of the excavation. |
Layered excavation | Earthwork: (1) Excavation from top to bottom, requirements for deep excavation sections. (2) Requirements for zero-filled sections. Stonework: (1) Excavate mechanically as much as possible and use smooth blasting and small charge for the rest controlled blasting. (2) Blasting method process and requirements. |
Loading and transportation | That meets the requirements of subgrade filling shall be transported to the fill, and the rest shall be transported to the spoil site. |
Clear the bottom and brush the slope | After mechanically brushing the slope, the square grid method is manually used to control the flatness. |
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Special roadbed treatment (P5) | Shallow excavation of roadbed | Replacement with 1.2 m thick sand and gravel. |
Soft base | When it is shallow, excavate it directly and replace it with gravel soil or pebble gravel soil. |
High fill embankment | Laying the sheds and set up ramps during construction. |
Deep digging | Grade 5 frame anchor protection for the slope subgrade. |
Fill and cut junction | Set up a transition section not less than 10m. |
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Hot hammer asphalt pavement (P6) | Construction preparation | Site cleaning and construction lofting. |
Asphalt mixture mixing | Factory mixing method and heating temperature requirements. |
Transportation | Shipping time and unloading requirements. |
Paving | Two paving machines on the lower layer are paving at the same time. A single machine on the upper layer is paving. |
Compaction | Initial pressure is light, the recompression is heavy, and the final pressure is light. |
Seam treatment | Horizontal seams with flat seams and longitudinal with thermal seams. |
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