Surrounding Rock Control Technology of Roadway in Coal Pillar Recovery Working Face
In order to improve the recovery rate of coal resources,reduce the loss and waste of coal resources and extend the service life of coal mines,Nanzhuang Company adopted the technical practice of pillar recovery in alleys.The high-strength and high-pretension bolt support technology can effectively support the broken roadway,and the surrounding rock layered grouting technology can integrally reinforce the surrounding rock of the roadway.The application of these two technologies can realize the effective control of roadway in coal pillar working face and ensure the safe mining of coal pillar.
high intensityhigh pre-tightening forcebolt supportlayered grouting of surrounding rock
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