VENTING OF UNDERGROUND MINING PLANT Russian patent published in 2015 - IPC E21F1/08 

FIELD: mining.

SUBSTANCE: in compliance with claimed process, ambient air is fed via air feed shafts by the main blower and heated in air heater plant located at the surface of air feed shaft. At heating, heat depressions between shafts and natural mine-draft in microcontroller unit. Heat efficiency of pit AHP and main blower working conditions are controlled by appropriate control devices to receive data from microcontroller unit subject to the magnitude of heat depressions between shafts and natural mine-draft. Ambient air is fed via air feed shafts with application of various venting techniques and whatever number of air feed shafts. Air flowing thought underground section of mining plant is heated with the help of electrical heating plates arranged in the main airways approaching the vent shaft. At low temperatures, air is heated in the main airways to temperatures whereat positive heat depressions and natural mine drift originate. At high temperatures and shutdown of the pit AHP, air heating in the main airways is performed subject to ratio between electric power consumed by electrical heating plates and than saved at the main blower computed by microcontroller unit. At air heating, defined are heat depression between shafts and natural mine-draft at microcontroller unit. Note here that heat efficiency of said heating plates is controlled by control device whereto data is fed from microcontroller unit subject to the magnitude of heat depressions between shafts and natural mine-draft. Heated air is derived to the surface with application of whatever number of vent shafts. Note here that the main air ways of every vent shaft are equipped with said plate elements.

EFFECT: higher power efficiency of venting.

2 cl, 3 dwg