Rapid stoping method for pre-treating hard rock mass invaded by coal face in advance

The invention discloses a rapid stoping method for pre-treating a hard rock mass invaded by a coal face in advance. The rapid stoping method comprises the following steps that S1, a large-diameter hydraulic fracturing deep drill hole is constructed in a roadway of the coal face; S2, hydraulic fractu...

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Bibliographic Details
Main Authors ZHANG XIAOWU, SUN LEI, WANG QI, XU JINHAI, ZHANG HAOWEN
Format Patent
LanguageChinese
English
Published 09.11.2021
Subjects
AMMUNITION
BLASTING
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
MINING
MINING OR QUARRYING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
WEAPONS
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Summary:The invention discloses a rapid stoping method for pre-treating a hard rock mass invaded by a coal face in advance. The rapid stoping method comprises the following steps that S1, a large-diameter hydraulic fracturing deep drill hole is constructed in a roadway of the coal face; S2, hydraulic fracturing is carried out in the large-diameter hydraulic fracturing deep drill hole, hydraulic cracks are artificially manufactured, and the intrusive hard rock mass in the working face stoping range is separated from a top plate and a bottom plate of the coal face; S3, large-diameter presplitting blasting deep drill holes are constructed in the roadway of the coal face; and S4, pre-splitting blasting is carried out in the large-diameter pre-splitting blasting deep drill hole, and the intrusive hard rock mass within the working face stoping range is crushed. The outdated technology that mining can only be carried out after explosive blasting is carried out in the coal face is eliminated, the influence of the coal face i
Bibliography:Application Number: CN202111133596