Prefabricated Pump Station Guangxi Integrated Rainwater Prefabricated Pump Station Successfully Installed

Description :

Prefabricated pump stationThe inner lining layer includes a sub inner layer and an inner surface layer, with a total thickness of not less than 2mm, of which the inner surface layer thickness is not less than 0.3mm. The small thickness of the pipe wall should not be less than the nominal thickness specified in the approved drawings and technical documents according to the prescribed procedures. Integrated rainwater prefabricated pump station: The lower part of the base should have a concrete bottom plate with anti floating properties. The design dimensions of the concrete bottom plate should be determined based on anti floating calculations. The multi well pump station and the front and rear structures of the pump station should use the same bottom plate. The cement strength grade of the concrete bottom plate should not be less than C40, the steel bar diameter should not be less than 10mm, and the thickness should not be less than 250mm. The concrete bottom plate should be pre embedded with anchor bolts for fixing the prefabricated pump station after hoisting into the pit. The concrete bottom plate can be prefabricated or directly poured into the foundation pit. Integrated rainwater prefabricated pump station: The installation of fixed liquid level controllers and hanging cables should avoid entanglement or end at the entrance of the pump station, and the controller should avoid interference from obstacles. The setting of start stop liquid level requires one submersible pump to be set at 2 liquid levels, and two submersible pumps must be set at least 3 liquid levels. The overall layout requirements and site of prefabricated pump stations should be determined based on geological conditions, engineering design, and pump station operation, through technical and economic comparisons.

　　Integrated rainwater prefabricated pump station: The uplift pressure should include buoyancy force and seepage pressure. The osmotic pressure should be calculated and determined based on factors such as the type of foundation, water level combinations under various operating conditions, and the layout of anti-seepage and drainage facilities at the bottom of the pump station foundation. For soil foundation, it is advisable to use the improved resistance coefficient method for calculation; For rock foundations, it is advisable to use the straight-line distribution method for calculation; The soil pressure should be calculated based on factors such as foundation conditions, backfill soil properties, retaining height, groundwater level inside the backfill, and possible deformation of the pump station structure, using either active or static soil pressure. When calculating, the slope angle of the top surface of the fill and the effect of overloading should be taken into account. Integrated rainwater prefabricated pump station: The wind pressure should be calculated and determined based on the wind direction, wind speed, and wind area of the pump station provided by the local meteorological station. When calculating wind pressure, the influence of terrain, landforms, and nearby buildings around the pump station should be considered; Prefabricated pump stations may be subjected to a combination of various loads simultaneously. The load combination used for pump station stability analysis should be in accordance with the provisions of Table 3.3.2, and if necessary, other possible unfavorable combinations should also be considered. Integrated rainwater prefabricated pump station: For soil foundation, the values of Φ 0 and C0 can be adopted according to the indoor shear test data and the provisions of Table A.0.3 in Appendix A of this standard; For rock foundations, the values of Φ 0 and C0 can be calculated based on field and indoor shear test data, using the average of the small values of field test peaks or the average of the small values of field and indoor test peaks. When the pump station is subjected to bidirectional horizontal forces, its anti slip stability along the cooperative direction should be calculated. When the foundation stress layer of the pump station is a relatively deep and weak soil layer, and the vertical load acting on it is large, the anti sliding stability of the pump station and the soil along the deep layer of the foundation should also be calculated. Integrated rainwater prefabricated pump station: This equipment is mainly used in sewage treatment plants and pump stations, and can meet high flow applications. The drum and grille are driven by motors, which can respectively monitor and prevent drum overload, protecting the normal operation of the equipment.

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