DRAINAGE SYSTEM FOR DEEP PITS Russian patent published in 2006 - IPC E21F16/00 E02D19/10 

FIELD: mining industry, particularly to remove water from deep pits, especially in going to underground excavation in upper part of ore body.

SUBSTANCE: system comprises main pipeline, pumping unit with pumping pipe and power supply members. The system is additionally provided with lowering-and-lifting device arranged on pit side and tightening device provided with rope. The first rope end is connected with tubular case in which submersed pumping unit is installed. Submersed end of the case has throughput orifices for liquid passage. Through orifice formed at outlet case end communicates with pumping pipe orifice, which in turn is connected with inlet end of the main pipeline through connection pipe and connection flange. Outlet end of the main pipeline is secured in the lifting-and-lowering device.

EFFECT: reduced material consumption and increased efficiency of water drainage from water-filled deep pits.

2 dwg