FIELD: mining.
SUBSTANCE: invention relates to mining industry, namely, to underground development of deposits, and can be used for elimination of roof hang at the boundaries of extraction section. Method includes drilling of wells into rocks of mine working roof, their sealing and injection of liquid into them in hydraulic fracturing mode. Wells are drilled in one plane in direction of their approach to intersection. Wells are sealed and bled by injected fluid before formation of tensile stress field in well drilling plane, then, pressure is increased until rock breaks with occurrence of increasing crack till it reaches the working surface, from which wells are drilled. Fluid is injected through elastic sleeves pressed by pressure to walls of wells.
EFFECT: invention increases efficiency of the method of controlling roofing.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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| METHOD FOR DEGASSING ACCOMPANYING SEAMS | 1994 |
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| METHOD OF HYDRAULIC FRACTURING OF COAL BED | 2018 |
|
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|
RU2373398C1 |
| METHOD OF DEGASSING A ROCK BODY | 0 |
|
SU1550174A1 |
| METHOD OF WORKING PROTECTION | 0 |
|
SU1710746A1 |
| DEVICE FOR DIRECTIONAL CRACK FORMATION IN WELL | 2006 |
|
RU2302525C1 |
