FRACTURING RELIEF METHOD FOR STRESS CONCENTRATION OF REMAINING ORE PILLARS IN OVERLYING GOAF

Provided is a fracturing relief method for stress concentration of remaining ore pillars in an overlying goaf, including first, performing directional fracturing on a roof to optimize the stress of the roof and reduce the source of force; secondly, performing pulse fracturing on a coal pillar to pro...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SHAO, Luying, ZHAO, Xinglong, HUANG, Bingxiang, CHEN, Shuliang
Format:	Patent
Sprache:	eng
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
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