Design of Foundation Pit Well Point Dewatering in Pumping Station Engineering in Irrigation Areas
This article explores the design points of foundation pit well point dewatering scheme in a pumping station project in a certain irrigation area.On the basis of determining the total inflow of the foundation pit,parameters such as the length,diameter,quantity of well point pipes,and the diameter of the pumping main pipe are obtained separately;Based on the calculation results of the pump head and flow rate,the 175QJ80-33-11 submersible pump is selected.The design flow rate of this pump is 80 m3/h,and the rated head is 35 m,which can meet the requirements for dewatering of foundation pit wells in this project;The well point pipe is connected to the pumping main pipe using a rubber hose connection method,and a dual power supply based on a bidirectional knife switch is used to ensure the reliable operation of the well point dewatering system.The design of a foundation pit well point dewatering plan provides a reference for the excavation of dewatering wells and the installation of well point pumping systems in subsequent irrigation pumping station projects.
foundation pit well point precipitationirrigation area pumping station engineeringpumping pipewater inflow
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