Intelligent precipitation system for open caisson foundation pit

The utility model discloses an intelligent precipitation system for an open caisson foundation pit, which comprises a plurality of precipitation wells arranged on the periphery of the open caisson foundation pit, permeable steel sleeves are inserted in the precipitation wells, and a gravel backfill layer is filled between the outer walls of the permeable steel sleeves and the walls of the precipitation wells to prevent collapse of the walls of the precipitation wells and clogging of water filtering holes of the permeable steel sleeves; a submersible pump and a water level detector are arranged in the permeable steel sleeve, the submersible pump is connected with a water pumping pipe extending out of the permeable steel sleeve, the submersible pump is connected with a controller through a control cable, and the controller is also connected with the water level detector through the control cable. The intelligent precipitation system for the open caisson foundation pit can automatically pump and drain precipitat