Method and equipment for preventing rock burst through pressure relief of coal seam ultra-long large-diameter drill hole

Abstract

The invention provides a method and equipment for preventing rock burst through pressure relief of coal seam ultra-long large-diameter drill holes, according to the method, a conventional coal seam large-diameter drill hole arrangement mode is changed by designing a transverse coal seam large-diameter drill hole arrangement scheme and adopting an arrangement mode that the drill holes are parallel to a roadway, and the drill holes are arranged outside a roadway surrounding rock support area; the damage of large-diameter drill holes of the coal seam to the roadway surrounding rock support is avoided, and the dynamic load impact resistance of the roadway surrounding rock is enhanced; a drilling site of the drilling machine is arranged in a working face retracement channel, a coal body chamber or an adjacent roadway, back-and-forth carrying of the drilling machine is avoided, the drilling machine is prevented from occupying the section of a pedestrian and traffic roadway for a long time, and ventilation resistance is reduced.

Description

Technical field [0001] The present invention relates to the field of impact ground pressure prevention technology, in particular to a coal seam extra long diameter drilling pressure relief pressure prevention and control impact ground pressure method, apparatus, computer equipment and computer-readable storage medium. Background [0002] Impact ground pressure is one of the most serious power disasters in coal mines, and impact pressure accidents have caused a large number of casualties and caused a very bad impact on the economy and society. As energy demand increases, mining depths become larger and larger, and the threat of impact pressure becomes more and more serious. At present, there are many means of prevention and control of impact ground pressure, such as top plate blasting pressure relief, top plate hydraulic fracturing pressure relief, coal seam large diameter drilling pressure relief, etc. [0003] At present, the means of large-diameter drilling and pressure relief...

AI Technical Summary

Problems solved by technology

This construction method has three major disadvantages: the first disadvantage is that the drilling rig needs to move frequently in the roadway, occupying part of the roadway section for a long time, which has a certain interference and impact on the passage of personnel and vehicles and ventilation resistance; the second disadvantage is that, Since the large-diameter boreholes in the coal seam are arranged perpendicular to the coal pillar or mining side, the existence of these large-diameter boreholes also has an adverse effect on roadway support, especially when the large-diameter boreholes in the coal seam have a large diameter and a small hole spacing , its adverse effect on roadway support is more prominent, which to a certain extent weakens the ability of the coal body around the roadway to resist dynamic load impact, thus reducing the anti-scour effect of large-diameter drilling holes in the coal seam; the third shortcoming Yes, conventional drilling rigs do not have a directional measurement system. When the drilling depth is large, it is impossible to ensure that the large-diameter drilling trajectory in the coal seam does not deviate from the design.

Images