Control Technology of Surrounding Rock in Large Mining Height Working Face Passing through Deserted Roadways
In response to the problem of difficult control of the surrounding rock of the large mining height working face passing through deserted roadways,taking the geological conditions of the 2307 working face of Wangpo Coal Mine as the background,two schemes of roof reinforcement and full filling method were designed for passing through deserted roadways by adopting on-site testing methods based on the intact condition of the roof in crosscut,and the specific construction parameters were determined.According to the appearance of ore pressure during the mining process of the working face,after the working face was connected to the crosscut,the maximum deformation of the roof and floor reached 302 mm,the maximum deformation of the two sides reached 428 mm,there was no roof falling phenomenon in the crosscut,and as the distance between the working face and the crosscut decreased,the working resistance during the pressure of the working face showed an increasing trend.
passing through deserted roadwayssupport designfull filling method
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