METHOD FOR PREVENTION OF DYNAMIC GAS EMISSIONS FROM SOIL IN PROCESS OF MINE WORKING IN GAS-BEARING BEDS Russian patent published in 2010 - IPC E21F5/00 

FIELD: mining.

SUBSTANCE: method is proposed to prevent dynamic gas emissions from soil in process of gas-bearing beds, which consists in the fact that strong and weak layers are identified in soil massif, then wells are drilled with a distance from bottomhole by 5-7 m, out of which wells 8 are vertical unloading ones, and inclined wells 5 are degassing. Wells 8 are drilled to the depth of 0.3-0.5 of strong layer strength along longitudinal axis of mine working in a distance that depends on layer properties, for instance in 2 m, and directed hydraulic rupture is arranged through them to make cracks that would serially join wells 8. Inclined degassing wells 5 are drilled into underlying weak layers, and in 1 m along their length hydraulic ruptures are arranged to intensify process of degassing.

EFFECT: more reliable prevention of gas dynamic demonstrations from the side of mine soil, reduced labour intensiveness of works and possibility to combine them with sinking cycle works.

1 dwg