FIELD: mining.
SUBSTANCE: proposed method comprises drilling of degassing walls directed to mining face, performing of coal seam interval frac therefrom and tapping of released gas Degassing wells are drilled in ascending direction from mounting chamber and face entries cut across extraction pillar till exit to adjacent face entry board. Interval frac is performed with the use of Novec 1230 fluid. Then, degassing well mouth is sealed while released recess is discharged by its free outflow from said wells to degassing circuit.
EFFECT: intensified coal seam gas recovery.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRELIMINARY DEGASSING OF COAL BED | 2013 |
|
RU2534881C1 |
| COAL BED DEGASSING METHOD | 2011 |
|
RU2472939C1 |
| COAL BED DEGASSING METHOD | 2011 |
|
RU2472940C1 |
| METHOD FOR DEGASSING OF OVERWORKED ADJACENT SEAMS | 2020 |
|
RU2749707C1 |
| METHOD OF DEGASSING WORKED-OUT SPACES OF MINE FIELDS | 1995 |
|
RU2097568C1 |
| METHOD OF PREPARATION OF GAS CURVED COATING PLATE FOR PROCESSING | 2017 |
|
RU2659298C1 |
| METHOD OF DEGASSING EXCAVATION FIELDS | 0 |
|
SU1453046A1 |
| DEGASSING OF HIGH COAL AT ITS PROCESSING IN "LAYER-BED" | 2012 |
|
RU2516674C1 |
| METHOD OF MONITORING GAS EMISSION DURING MINING OPERATIONS IN SERIES OF HIGHLY GASEOUS COAL SEAMS | 2007 |
|
RU2333363C1 |
| METHOD OF DEGASSING COAL SEAM MINED IN PILLARS WITH DRIVING A SPLIT DRIFT | 0 |
|
SU1267007A1 |
