FIELD: mining.
SUBSTANCE: bed is opened and prepared by long columns with contouring extraction pillar by wells. Water is degassed and injected in bed for its unloading and processing by mechanised complexes. Extraction pillar is contoured on both sides by two parallel wells. The latter are crossed between each other in plane of extraction pillar by directed drilling by changing trajectory. To unload coal bed in points of well crossing, they are connected to each other by means of channels, which are produced by means of hydraulic rupture. On one side of coal bed preparatory excavation is carried out in wells that serve for their ventilation due to general shaft depression. On other side of extraction pillar, bed is degassed with application of arranged wells.
EFFECT: reduced volumes of drilling works, lower expenses for mines excavation.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVELOPMENT METHOD OF GENTLY SLOPING AND INCLINED COAL BEDS OF VARIOUS CONFIGURATION AND HYPSOMETRY, WHICH ARE COMPLICATED WITH MINING-AND-GEOLOGICAL INTERRUPTIONS | 2009 |
|
RU2391509C1 |
| DEVELOPMENT METHOD OF THICK COAL BEDS AND DEVICE FOR ITS IMPLEMENTATION | 2008 |
|
RU2391510C1 |
| METHOD FOR COMBINED DEVELOPMENT OF BED SERIES | 2011 |
|
RU2477793C1 |
| TUNNEL-CLEANING HYDRAULIC MECHANICAL COMPLEX | 2010 |
|
RU2421614C1 |
| COMPOUND DEVELOPMENT METHOD OF SERIES OF GENTLY SLOPING BEDS OF SYNCLINE AND BRACHYSYNCLINE MINE FIELDS | 2009 |
|
RU2422638C1 |
| METHOD TO RECOVER HYDROLOGICAL REGIME OF MINING FACILITY | 2005 |
|
RU2293819C1 |
| COMPOUND DEVELOPMENT METHOD OF SERIES OF GENTLY SLOPING BEDS OF MINE FIELDS | 2009 |
|
RU2418168C1 |
| METHOD OF HYDRODRILLING MINING OF THIN AND MEDIUM THICKNESS BEDS | 1999 |
|
RU2170821C1 |
| COMPOUND DEVELOPMENT METHOD OF SERIES OF GENTLY SLOPING BEDS OF MINE FIELDS | 2009 |
|
RU2418166C1 |
| COMPLEX DEVELOPMENT METHOD OF BED SERIES OF ANTICLINE DEPOSITS | 2009 |
|
RU2425216C1 |
