The Technology and Safe Mining Practice of Cutting Top Block Filling Roadway Side Retaining Roadway
In response to the problem of retaining roadway along the goaf in complex situations such as fractured roof,high gas content,and large burial depth,combined with the actual working conditions of a certain mining face,a technical scheme for cutting top block filling roadway and surrounding rock stability control technology is proposed.Through monitoring the mining pressure of the roadway,the measurement results show that the cutting top block filling scheme is conducive to the development of non pillar mining schemes,making the recovery of coal pillars in the section more sufficient,significantly improving the recovery ratio of mineral resources,effectively solving the tense situation of alternating mining faces,and generating economic benefits of about 296 million yuan.
top cutting pressure relieffilling and retaining roadwayno coal pillar
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