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Construction Method of Return Flume of fountain equipment

2020-12-26

1, check the sexual level point, set the temporary level point, check the elevation. 

2. Measure the Middle Pile of Fountain Equipment Flume, the elevation of the pipeline on the spot, put in the side line of the flume, pile soil, pile interval and temporary use plan. 

3. Strictly control the height of the bottom of the trench when it is excavated. The height of the bottom of the trench can be 10 cm longer than the height described. The earthwork excavated in the trench shall be piled up 1.0 meters away from the edge of the trench. The supporting method shall be used in the soft and dangerous section of the soil to prevent the collapse of the trench. 

4. Tamping the plain soil at the bottom of the trough, using MU5.0 rubble M5 cement mortar to build the four sides of the trough: A selection of raw materials: In order to reduce the heat of hydration, 32.5 grade slag cement is selected; In order to reach the pouring temperature of concrete mixture at 28.5 °C, deep well ground water is used for mixing The mixture of UEA expansion agent and super-slow high-efficiency pumping agent in concrete can compensate the shortening of concrete, delay the release of hydrate, reduce the temperature stress of the floor, and pump the pump ability. B Fountain Equipment Pouring method: Begged A one-time pouring finished, leaving no construction joints, to strengthen the bottom of the pool and the wall of the anti-seepage water transfer. Concrete placement from bottom to top "inclined layer, so step self-sealing, thin-layer pouring, natural activities, continuous construction, one-time to top" pouring method. C VIBRATION: Vibration time, vibration point interval and penetration depth should be strictly controlled to avoid leakage of vibration at the junction of each pouring belt. Wade the grip force of concrete and steel bar, increase compactness. D FOUNTAIN EQUIPMENT SURFACE AND BLEEDING DISPOSAL: concrete surface after pouring molding cement mortar is thicker, should be safe to describe the level with a scraper, drive off the surface bleeding, initial set, repeated rolling, with a wooden spatula rubbing surface 2-3 times, to Force and retract the water fissures. E Fountain Equipment Concrete Protection: Because of the project construction, it is autumn, the temperature difference between noon and night is larger, in order to ensure the quality of concrete construction, control the outbreak of temperature cracks, choose water storage protection. Water Storage, choose to cover a layer of plastic film, a layer of grass bags, for temporary protection of moisture. 5, overflow, intake pipeline equipment reference drawing paper. 6. Fountain Equipment Pipeline Construction Completed, equipment water grate cover plate: A spring water grate cover plate data for stainless steel. Specification 600 * 600, four corners fixed with 108 * 4,25 high stainless steel ring, four sides with 30 * 30 * 3 stainless steel, diagonal straight line with 38 * 25 * 1.5 stainless steel square pipe, four sides with 25 * 25 * 1.0 stainless steel square pipe. The width of the grate of the B return flume is 600, the length is judged on the spot, the stainless steel pipe with 30 * 30 * 3 is chosen to weld the four sides, and the crossbar with 25 * 25 * 1.0 is chosen to weld the middle.