Application of Roof Cutting,Pressure Relief and Roadway Protection Technology for Narrow Coal Pillar Goaf
In order to reduce the severity of mining pressure manifestation along the goaf roadway during the mining period ofⅡ888 working face,it is proposed to conduct a pre splitting blasting roof cutting and pressure relief test in the Ⅱ888 air roadway.Through theoretical analysis,the parameters of blasting drilling were reasonably determined,and industrial experiments were conducted on site.The experimental results show that the deformation of the surrounding rock in the tunnel has been significantly improved,the amount of tunnel repair has been reduced,and the level of efficient production technology has been improved.
narrow coal pillaralong the goaf roadwaymining pressure manifestationroof cutting and pressure reliefblasting drilling
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