METHOD OF UNDERGROUND GASIFICATION OF COAL BEDS

FIELD: mining. ^ SUBSTANCE: method includes drilling bores from surface, preparing and igniting of underground gas-generator, withdrawing of generated gas and associated de-gassing of overlying massif. First there is evaluated the position of the primary arches for opening an undermined massif with...

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Bibliographische Detailangaben
Hauptverfasser:	LAZARENKO SERGEJ NIKOLAEVICH, KOZYREVA ELENA NIKOLAEVNA, TRIZNO SERGEJ KONSTANTINOVICH, POLEVSHCHIKOV GENNADIJ JAKOVLEVICH, SHINKEVICH MAKSIM VALER'EVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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Beschreibung
Zusammenfassung:	FIELD: mining. ^ SUBSTANCE: method includes drilling bores from surface, preparing and igniting of underground gas-generator, withdrawing of generated gas and associated de-gassing of overlying massif. First there is evaluated the position of the primary arches for opening an undermined massif with the underground gas generator; de-gassing bores are drilled into tops of the said arches. Also the distance between degassing bores B is evaluated from a mathematic expression. ^ EFFECT: increased efficiency of coal beds gasification with associated degassing by combining gasification and degassing processes and utilisation of massif unloading effect at underground gas-generator operation. ^ 2 dwg