METHOD TO PREPARE WATER-LOGGED GAS SATURATED MASSIF OF ROCKS TO MINING BY UNDERGROUND METHOD Russian patent published in 2013 - IPC E21C41/16 E21F7/00 E21F16/00 

FIELD: mining.

SUBSTANCE: for realisation of the method, drainage-degassing wells are drilled in zones of higher cracking outside the limits of the prepared mine. Wells are drilled in the bottom-up direction in the close proximity to the profile of the prepared mine. Pumping of gas saturated drainage brines is carried out until the level of the depression curve is set below the horizon of breaking works, and it is maintained at this level for the entire period of mining. Besides, in process of wells drilling the minimum permissible distance to the profile of the prepared mine is accepted as 0.035 m per each running metre of the well.

EFFECT: method makes it possible to increase safety of underground mining works due to reduce amount of arriving fuel gas and natural waters to mines from deep and deposit-adjacent horizons of earth interior.

2 cl, 2 dwg