METHOD OF MINING OPERATIONS IN FAN-MINING METHOD Russian patent published in 2014 - IPC E21C41/26 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and can be used in development of large deposits of commercial minerals of hollow and tilting occurrence with use of the technique of continuous action with the open-pit mining. The method comprises permanent and initial trenching, mounting of transportation lines, excavation of commercial minerals by mining with wedged stopes. The mining with wedged stopes is carried out from the maximum width of excavation stope to the stope width B_Ti, which enables movement of transportation lines to the next wedged stope in accordance with the condition: $$B_{Ti}=\left(\frac{B_{MAX}-e}{tg\left[\left(i+1\right)\cdot a\right]}\right)\cdot tg(i\cdot a),$$ where B_MAX is the maximum width of the excavation stope; e is the distance from the forehead to the transportation lines; a is the angle of rotation of the front of mining operations; i is the serial number of the wedged stope. The subsequent wedged stopes are mined also from the maximum width of the excavation stope, while capturing the unmined part of the previous stope.

EFFECT: increase in productivity of excavation and loading complex in mining of deposits of commercial minerals by fan-mining method.

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