METHOD OF HYDRAULIC SEPARATION OF THE COAL SEAM Russian patent published in 2023 - IPC E21B43/26 

FIELD: mining.

SUBSTANCE: invention relates to methods for hydraulic treatment of coal seams and can be used in the coal mining industry. According to the method, hydraulic treatment of the coal seam is carried out, during which a liquid medium is injected into the prepared well and the pressure of the liquid medium in the well is fixed during injection. The volume of the liquid medium is injected sequentially in two parts: the first part of the volume of the liquid medium is injected with a gradual increase in the injection rate, and its second part with a gradual decrease in the injection rate, the value of which is set proportionally to the increase in the injection rate of the first part of the liquid medium volume. The analysis of the effectiveness of hydraulic separation is carried out, which consists in determining the presence and magnitude of residual deformations of the coal seam by comparing the values of the pressure of the liquid medium with each other when the first and second parts of the volume of the liquid medium are injected into the prepared well.

EFFECT: increased efficiency of the hydraulic separation of the coal seam.

6 cl, 5 dwg