Comprehensive anti-burst construction method for rock cross-cut outburst coal seams
A construction method and a technology of outburst coal seams, which are applied in earthwork drilling, gas discharge, safety devices, etc., can solve problems such as outburst and undiscovered coal and gas, and achieve safety assurance, good advance support effect, and improved safety Effect
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[0058] figure 1 As shown, a comprehensive outburst prevention construction method for exposing outburst coal seams in Shimen, including advanced geological drilling, regional gas pre-drainage, regional pre-drainage effect inspection, local gas drainage, local drainage effect inspection, grouting reinforcement and exposing coal seams .
[0059] The implementation process of the present invention is illustrated below in conjunction with accompanying drawing:
[0060] The project adopts a comprehensive outburst prevention construction method of exposing the outburst coal seam at the Shimen. The specific construction steps are as follows:
[0061] (1) Advanced geological drilling
[0062] When the vertical distance between Shimen 1 head-on and coal seam 2 is 15m, stop the excavation, and use ZYJ-420 / 200 type frame-pillar hydraulic rotary drilling rig to construct advanced geological drilling holes on the head-on section of Shimen (1), and the number of advanced geological drilli...
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